refactor: centralize classifier constants and simplify logic

- Improved RevisionComparator with fuzzy matching (RapidFuzz) and dynamic DB material loading
- Enhanced regex patterns for better size/material extraction
- Initialized Alembic for schema migrations and created baseline migration
- Added entrypoint.sh for automated migrations in Docker
- Fixed SyntaxError in fitting_classifier.py
- Updated test suite with new functionality tests

.env.example

@@ -0,0 +1,26 @@
+# TK-MP-Project 환경 변수 설정 예시
+# 사용법: 이 파일을 .env로 복사한 후 필요한 값을 수정하세요
+# cp .env.example .env
+
+# PostgreSQL 설정
+POSTGRES_DB=tk_mp_bom
+POSTGRES_USER=tkmp_user
+POSTGRES_PASSWORD=your_password_here
+POSTGRES_PORT=15432
+
+# Redis 설정
+REDIS_PORT=16379
+
+# 백엔드 설정
+BACKEND_PORT=18000
+ENVIRONMENT=development
+DEBUG=true
+
+# 프론트엔드 설정
+FRONTEND_PORT=13000
+VITE_API_URL=http://localhost:18000
+
+# pgAdmin 설정
+PGADMIN_EMAIL=admin@example.com
+PGADMIN_PASSWORD=admin_password_here
+PGADMIN_PORT=15050

RULES.md

@@ -1255,6 +1255,8 @@ const purchaseQuantity = Math.ceil(bomQuantity / 5) * 5;
   - 자동 에러 핸들링 (검증, DB, 일반 예외)
 
 ### 📊 구현된 페이지들
+
+#### **📋 기존 페이지들**
 - MainPage: 메인 대시보드
 - JobSelectionPage: 프로젝트 선택
 - JobRegistrationPage: 프로젝트 등록
@@ -1264,6 +1266,179 @@ const purchaseQuantity = Math.ceil(bomQuantity / 5) * 5;
 - PurchaseConfirmationPage: 구매 확인
 - RevisionPurchasePage: 리비전별 구매
 
+#### **🎨 신규 모던 UI 페이지들 (2025.10.16 추가)**
+
+##### **DashboardPage.jsx** - 프로젝트 중심 대시보드
+```jsx
+// 위치: frontend/src/pages/DashboardPage.jsx
+// 특징: 데본씽크 스타일의 모던한 디자인
+// 기능:
+// - 프로젝트 선택 및 관리 (카드 형태)
+// - 권한별 기능 카드 (BOM 관리, 자재 관리, 구매 관리)
+// - 관리자 전용 기능 (사용자 관리, 시스템 설정)
+// - 시스템 현황 대시보드
+// - 프로젝트 생성 모달
+
+// 디자인 특징:
+// - 글래스모피즘 효과 (backdrop-filter: blur(10px))
+// - 그라데이션 배경 및 버튼
+// - 카드 호버 애니메이션
+// - 타이포그래피 중심 디자인 (이모지 제거)
+// - 반응형 그리드 레이아웃
+
+// 주요 기능:
+// 1. 프로젝트 선택 시스템
+//    - 프로젝트 목록을 카드 형태로 표시
+//    - 선택된 프로젝트 하이라이트
+//    - 프로젝트 정보 (코드, 이름, 고객사) 표시
+// 2. 권한 기반 기능 접근
+//    - 프로젝트 선택 후에만 BOM/자재 관리 접근 가능
+//    - 관리자 전용 메뉴 분리 표시
+// 3. 프로젝트 생성 기능
+//    - 모달 형태의 프로젝트 생성 폼
+//    - 프로젝트 코드, 이름, 고객사 입력
+```
+
+##### **UserMenu.jsx** - 사용자 메뉴 컴포넌트
+```jsx
+// 위치: frontend/src/components/UserMenu.jsx
+// 특징: 드롭다운 형태의 사용자 메뉴
+// 기능:
+// - 사용자 프로필 표시 (아바타, 이름, 역할)
+// - 계정 설정 링크
+// - 관리자 전용 메뉴 (권한별 표시)
+// - 로그아웃 기능
+
+// 디자인 특징:
+// - 원형 아바타 (그라데이션 배경)
+// - 드롭다운 애니메이션
+// - 호버 효과
+// - 역할별 색상 구분
+
+// 주요 기능:
+// 1. 사용자 정보 표시
+//    - 이름 첫 글자로 아바타 생성
+//    - 역할 표시 (시스템 관리자, 관리자, 사용자)
+// 2. 권한별 메뉴
+//    - 관리자: 사용자 관리, 시스템 설정, 시스템 로그
+//    - 일반 사용자: 계정 설정만
+// 3. 네비게이션 연동
+//    - onNavigate 콜백을 통한 페이지 이동
+//    - onLogout 콜백을 통한 로그아웃 처리
+```
+
+#### **🎨 UI/UX 디자인 시스템**
+
+##### **색상 팔레트**
+```css
+/* 주요 색상 */
+--primary-gradient: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
+--background-gradient: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
+--glass-background: rgba(255, 255, 255, 0.9);
+--text-primary: #0f172a;
+--text-secondary: #64748b;
+--border-color: rgba(255, 255, 255, 0.2);
+
+/* 그림자 */
+--shadow-card: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
+--shadow-button: 0 4px 14px 0 rgba(59, 130, 246, 0.39);
+--shadow-hover: 0 8px 25px 0 rgba(59, 130, 246, 0.5);
+```
+
+##### **타이포그래피**
+```css
+/* 폰트 시스템 */
+font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
+
+/* 제목 */
+--heading-1: 36px, weight: 800, letter-spacing: -0.025em;
+--heading-2: 24px, weight: 700, letter-spacing: -0.025em;
+--heading-3: 18px, weight: 600;
+
+/* 본문 */
+--body-large: 18px, weight: 400;
+--body-medium: 16px, weight: 400;
+--body-small: 14px, weight: 400;
+--caption: 12px, weight: 400;
+```
+
+##### **컴포넌트 스타일**
+```css
+/* 카드 */
+.modern-card {
+  background: rgba(255, 255, 255, 0.9);
+  backdrop-filter: blur(10px);
+  border-radius: 20px;
+  padding: 32px;
+  box-shadow: var(--shadow-card);
+  border: 1px solid var(--border-color);
+  transition: all 0.2s ease;
+}
+
+.modern-card:hover {
+  transform: translateY(-2px);
+  box-shadow: var(--shadow-hover);
+}
+
+/* 버튼 */
+.modern-button {
+  background: var(--primary-gradient);
+  color: white;
+  border: none;
+  border-radius: 12px;
+  padding: 12px 20px;
+  font-weight: 600;
+  box-shadow: var(--shadow-button);
+  transition: all 0.2s ease;
+  letter-spacing: 0.025em;
+}
+
+.modern-button:hover {
+  transform: translateY(-2px);
+  box-shadow: var(--shadow-hover);
+}
+```
+
+#### **🔧 컴포넌트 사용 가이드**
+
+##### **DashboardPage 사용법**
+```jsx
+import DashboardPage from './pages/DashboardPage';
+
+// App.jsx에서 사용
+case 'dashboard':
+  return (
+    <DashboardPage 
+      user={user}
+      onNavigate={navigateToPage}
+      pendingSignupCount={pendingSignupCount}
+    />
+  );
+```
+
+##### **UserMenu 사용법**
+```jsx
+import UserMenu from './components/UserMenu';
+
+// 헤더에서 사용
+<UserMenu 
+  user={user}
+  onNavigate={navigateToPage}
+  onLogout={handleLogout}
+/>
+```
+
+#### **📱 반응형 디자인**
+- **데스크톱**: 1200px 이상 - 3-4열 그리드
+- **태블릿**: 768px-1199px - 2열 그리드  
+- **모바일**: 767px 이하 - 1열 스택
+
+#### **♿ 접근성 고려사항**
+- 키보드 네비게이션 지원
+- 충분한 색상 대비 (WCAG 2.1 AA 준수)
+- 스크린 리더 호환성
+- 포커스 표시 명확화
+
 ---
 
 ## 🌐 시놀로지 NAS 배포 가이드 ⭐

backend/Dockerfile

@@ -11,6 +11,7 @@ RUN apt-get update && apt-get install -y \
     libpq-dev \
     libmagic1 \
     libmagic-dev \
+    netcat-openbsd \
     && rm -rf /var/lib/apt/lists/*
 
 # requirements.txt 복사 및 의존성 설치
@@ -27,4 +28,4 @@ EXPOSE 8000
 ENV PYTHONPATH=/app
 
 # 서버 실행
-CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]
+CMD ["bash", "start.sh"]

backend/alembic.ini

@@ -0,0 +1,116 @@
+# A generic, single database configuration.
+
+[alembic]
+# path to migration scripts
+script_location = alembic
+
+# template used to generate migration file names; The default value is %%(rev)s_%%(slug)s
+# Uncomment the line below if you want the files to be prepended with date and time
+# see https://alembic.sqlalchemy.org/en/latest/tutorial.html#editing-the-ini-file
+# for all available tokens
+# file_template = %%(year)d_%%(month).2d_%%(day).2d_%%(hour).2d%%(minute).2d-%%(rev)s_%%(slug)s
+
+# sys.path path, will be prepended to sys.path if present.
+# defaults to the current working directory.
+prepend_sys_path = .
+
+# timezone to use when rendering the date within the migration file
+# as well as the filename.
+# If specified, requires the python>=3.9 or backports.zoneinfo library.
+# Any required deps can installed by adding `alembic[tz]` to the pip requirements
+# string value is passed to ZoneInfo()
+# leave blank for localtime
+# timezone =
+
+# max length of characters to apply to the
+# "slug" field
+# truncate_slug_length = 40
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+# set to 'true' to allow .pyc and .pyo files without
+# a source .py file to be detected as revisions in the
+# versions/ directory
+# sourceless = false
+
+# version location specification; This defaults
+# to alembic/versions.  When using multiple version
+# directories, initial revisions must be specified with --version-path.
+# The path separator used here should be the separator specified by "version_path_separator" below.
+# version_locations = %(here)s/bar:%(here)s/bat:alembic/versions
+
+# version path separator; As mentioned above, this is the character used to split
+# version_locations. The default within new alembic.ini files is "os", which uses os.pathsep.
+# If this key is omitted entirely, it falls back to the legacy behavior of splitting on spaces and/or commas.
+# Valid values for version_path_separator are:
+#
+# version_path_separator = :
+# version_path_separator = ;
+# version_path_separator = space
+version_path_separator = os  # Use os.pathsep. Default configuration used for new projects.
+
+# set to 'true' to search source files recursively
+# in each "version_locations" directory
+# new in Alembic version 1.10
+# recursive_version_locations = false
+
+# the output encoding used when revision files
+# are written from script.py.mako
+# output_encoding = utf-8
+
+# sqlalchemy.url = driver://user:pass@localhost/dbname
+
+
+[post_write_hooks]
+# post_write_hooks defines scripts or Python functions that are run
+# on newly generated revision scripts.  See the documentation for further
+# detail and examples
+
+# format using "black" - use the console_scripts runner, against the "black" entrypoint
+# hooks = black
+# black.type = console_scripts
+# black.entrypoint = black
+# black.options = -l 79 REVISION_SCRIPT_FILENAME
+
+# lint with attempts to fix using "ruff" - use the exec runner, execute a binary
+# hooks = ruff
+# ruff.type = exec
+# ruff.executable = %(here)s/.venv/bin/ruff
+# ruff.options = --fix REVISION_SCRIPT_FILENAME
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S

backend/alembic/README

@@ -0,0 +1 @@
+Generic single-database configuration.

backend/alembic/env.py

@@ -0,0 +1,116 @@
+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+
+from alembic import context
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+import os
+import sys
+from pathlib import Path
+
+# Backend root directory adding to path to allow imports
+backend_path = Path(__file__).parent.parent
+sys.path.append(str(backend_path))
+
+from app.models import Base
+from app.config import get_settings
+
+target_metadata = Base.metadata
+
+# Update config with app settings
+# Update config with app settings
+settings = get_settings()
+
+# 우선적으로 환경변수에서 DB URL을 확인하여 설정 (로컬 마이그레이션용)
+env_db_url = os.getenv("DATABASE_URL")
+if env_db_url:
+    config.set_main_option("sqlalchemy.url", env_db_url)
+else:
+    config.set_main_option("sqlalchemy.url", settings.get_database_url())
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def run_migrations_offline() -> None:
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    # Debug: Check what URL is actually being used
+    # 우선적으로 환경변수에서 DB URL을 확인하여 설정 (로컬 마이그레이션용)
+    env_db_url = os.getenv("DATABASE_URL")
+    if env_db_url:
+        print(f"DEBUG: Using DATABASE_URL from environment: {env_db_url}")
+        url = env_db_url
+    else:
+        url = config.get_main_option("sqlalchemy.url")
+        print(f"DEBUG: Using default configuration URL: {url}")
+        
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+    # Debug: Check what URL is actually being used
+    env_db_url = os.getenv("DATABASE_URL")
+    if env_db_url:
+        print(f"DEBUG: Using DATABASE_URL from environment: {env_db_url}")
+        config.set_main_option("sqlalchemy.url", env_db_url)
+    else:
+        url = config.get_main_option("sqlalchemy.url")
+        print(f"DEBUG: Using default configuration URL: {url}")
+
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection, target_metadata=target_metadata
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

backend/alembic/script.py.mako

@@ -0,0 +1,26 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision: str = ${repr(up_revision)}
+down_revision: Union[str, None] = ${repr(down_revision)}
+branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
+depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    ${downgrades if downgrades else "pass"}

backend/alembic/versions/8905071fdd15_initial_baseline.py

@@ -0,0 +1,872 @@
+"""Initial baseline
+
+Revision ID: 8905071fdd15
+Revises: 
+Create Date: 2026-01-09 09:29:05.123731
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision: str = '8905071fdd15'
+down_revision: Union[str, None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('role_permissions')
+    op.drop_table('user_activity_logs')
+    op.drop_index('idx_support_details_file_id', table_name='support_details')
+    op.drop_index('idx_support_details_material_id', table_name='support_details')
+    op.drop_table('support_details')
+    op.drop_table('material_purchase_tracking')
+    op.drop_index('idx_purchase_confirmations_job_revision', table_name='purchase_confirmations')
+    op.drop_table('purchase_confirmations')
+    op.drop_table('valve_details')
+    op.drop_table('purchase_items')
+    op.drop_index('idx_revision_sessions_job_no', table_name='revision_sessions')
+    op.drop_index('idx_revision_sessions_status', table_name='revision_sessions')
+    op.drop_table('revision_sessions')
+    op.drop_table('instrument_details')
+    op.drop_table('fitting_details')
+    op.drop_table('flange_details')
+    op.drop_index('idx_special_material_details_file_id', table_name='special_material_details')
+    op.drop_index('idx_special_material_details_material_id', table_name='special_material_details')
+    op.drop_table('special_material_details')
+    op.drop_table('pipe_end_preparations')
+    op.drop_table('user_sessions')
+    op.drop_table('login_logs')
+    op.drop_table('material_revisions_comparison')
+    op.drop_index('idx_purchase_request_items_category', table_name='purchase_request_items')
+    op.drop_index('idx_purchase_request_items_material_id', table_name='purchase_request_items')
+    op.drop_index('idx_purchase_request_items_request_id', table_name='purchase_request_items')
+    op.drop_table('purchase_request_items')
+    op.drop_table('material_comparison_details')
+    op.drop_index('idx_confirmed_purchase_items_category', table_name='confirmed_purchase_items')
+    op.drop_index('idx_confirmed_purchase_items_confirmation', table_name='confirmed_purchase_items')
+    op.drop_table('confirmed_purchase_items')
+    op.drop_table('material_purchase_mapping')
+    op.drop_table('bolt_details')
+    op.drop_table('permissions')
+    op.drop_index('idx_purchase_requests_job_no', table_name='purchase_requests')
+    op.drop_index('idx_purchase_requests_requested_by', table_name='purchase_requests')
+    op.drop_index('idx_purchase_requests_status', table_name='purchase_requests')
+    op.drop_table('purchase_requests')
+    op.drop_table('gasket_details')
+    op.drop_index('idx_revision_changes_action', table_name='revision_material_changes')
+    op.drop_index('idx_revision_changes_session', table_name='revision_material_changes')
+    op.drop_index('idx_revision_changes_status', table_name='revision_material_changes')
+    op.drop_table('revision_material_changes')
+    op.drop_index('idx_revision_logs_date', table_name='revision_action_logs')
+    op.drop_index('idx_revision_logs_session', table_name='revision_action_logs')
+    op.drop_index('idx_revision_logs_type', table_name='revision_action_logs')
+    op.drop_table('revision_action_logs')
+    op.drop_index('idx_inventory_transfers_date', table_name='inventory_transfers')
+    op.drop_index('idx_inventory_transfers_material', table_name='inventory_transfers')
+    op.drop_table('inventory_transfers')
+    op.drop_table('users')
+    op.drop_table('jobs')
+    op.drop_index('idx_files_active', table_name='files')
+    op.drop_index('idx_files_project', table_name='files')
+    op.drop_index('idx_files_purchase_confirmed', table_name='files')
+    op.drop_index('idx_files_uploaded_by', table_name='files')
+    op.create_index(op.f('ix_files_id'), 'files', ['id'], unique=False)
+    op.drop_constraint('files_project_id_fkey', 'files', type_='foreignkey')
+    op.create_foreign_key(None, 'files', 'projects', ['project_id'], ['id'])
+    op.drop_column('files', 'description')
+    op.drop_column('files', 'classification_completed')
+    op.drop_column('files', 'purchase_confirmed')
+    op.drop_column('files', 'bom_name')
+    op.drop_column('files', 'confirmed_at')
+    op.drop_column('files', 'confirmed_by')
+    op.drop_column('files', 'job_no')
+    op.drop_column('files', 'parsed_count')
+    op.create_index(op.f('ix_material_categories_id'), 'material_categories', ['id'], unique=False)
+    op.create_index(op.f('ix_material_grades_id'), 'material_grades', ['id'], unique=False)
+    op.create_index(op.f('ix_material_patterns_id'), 'material_patterns', ['id'], unique=False)
+    op.create_index(op.f('ix_material_specifications_id'), 'material_specifications', ['id'], unique=False)
+    op.drop_constraint('material_standards_standard_code_key', 'material_standards', type_='unique')
+    op.create_index(op.f('ix_material_standards_id'), 'material_standards', ['id'], unique=False)
+    op.create_index(op.f('ix_material_standards_standard_code'), 'material_standards', ['standard_code'], unique=True)
+    op.create_index(op.f('ix_material_tubing_mapping_id'), 'material_tubing_mapping', ['id'], unique=False)
+    op.alter_column('materials', 'verified_by',
+               existing_type=sa.VARCHAR(length=100),
+               type_=sa.String(length=50),
+               existing_nullable=True)
+    op.alter_column('materials', 'material_hash',
+               existing_type=sa.VARCHAR(length=64),
+               type_=sa.String(length=100),
+               existing_nullable=True)
+    op.alter_column('materials', 'full_material_grade',
+               existing_type=sa.TEXT(),
+               type_=sa.String(length=100),
+               existing_nullable=True)
+    op.drop_index('idx_materials_category', table_name='materials')
+    op.drop_index('idx_materials_classification_details', table_name='materials', postgresql_using='gin')
+    op.drop_index('idx_materials_file', table_name='materials')
+    op.drop_index('idx_materials_material_size', table_name='materials')
+    op.create_index(op.f('ix_materials_id'), 'materials', ['id'], unique=False)
+    op.drop_constraint('materials_file_id_fkey', 'materials', type_='foreignkey')
+    op.create_foreign_key(None, 'materials', 'files', ['file_id'], ['id'])
+    op.drop_column('materials', 'classification_details')
+    op.add_column('pipe_details', sa.Column('material_standard', sa.String(length=50), nullable=True))
+    op.add_column('pipe_details', sa.Column('material_grade', sa.String(length=50), nullable=True))
+    op.add_column('pipe_details', sa.Column('material_type', sa.String(length=50), nullable=True))
+    op.add_column('pipe_details', sa.Column('wall_thickness', sa.String(length=50), nullable=True))
+    op.add_column('pipe_details', sa.Column('nominal_size', sa.String(length=50), nullable=True))
+    op.add_column('pipe_details', sa.Column('material_confidence', sa.Numeric(precision=3, scale=2), nullable=True))
+    op.add_column('pipe_details', sa.Column('manufacturing_confidence', sa.Numeric(precision=3, scale=2), nullable=True))
+    op.add_column('pipe_details', sa.Column('end_prep_confidence', sa.Numeric(precision=3, scale=2), nullable=True))
+    op.add_column('pipe_details', sa.Column('schedule_confidence', sa.Numeric(precision=3, scale=2), nullable=True))
+    op.alter_column('pipe_details', 'file_id',
+               existing_type=sa.INTEGER(),
+               nullable=False)
+    op.create_index(op.f('ix_pipe_details_id'), 'pipe_details', ['id'], unique=False)
+    op.drop_constraint('pipe_details_material_id_fkey', 'pipe_details', type_='foreignkey')
+    op.drop_constraint('pipe_details_file_id_fkey', 'pipe_details', type_='foreignkey')
+    op.create_foreign_key(None, 'pipe_details', 'files', ['file_id'], ['id'])
+    op.drop_column('pipe_details', 'outer_diameter')
+    op.drop_column('pipe_details', 'additional_info')
+    op.drop_column('pipe_details', 'classification_confidence')
+    op.drop_column('pipe_details', 'material_id')
+    op.drop_column('pipe_details', 'material_spec')
+    op.drop_index('idx_projects_design_code', table_name='projects')
+    op.drop_index('idx_projects_official_code', table_name='projects')
+    op.drop_constraint('projects_official_project_code_key', 'projects', type_='unique')
+    op.create_index(op.f('ix_projects_id'), 'projects', ['id'], unique=False)
+    op.create_index(op.f('ix_projects_official_project_code'), 'projects', ['official_project_code'], unique=True)
+    op.create_index(op.f('ix_requirement_types_id'), 'requirement_types', ['id'], unique=False)
+    op.create_index(op.f('ix_special_material_grades_id'), 'special_material_grades', ['id'], unique=False)
+    op.create_index(op.f('ix_special_material_patterns_id'), 'special_material_patterns', ['id'], unique=False)
+    op.create_index(op.f('ix_special_materials_id'), 'special_materials', ['id'], unique=False)
+    op.create_index(op.f('ix_tubing_categories_id'), 'tubing_categories', ['id'], unique=False)
+    op.alter_column('tubing_manufacturers', 'contact_info',
+               existing_type=postgresql.JSONB(astext_type=sa.Text()),
+               type_=sa.JSON(),
+               existing_nullable=True)
+    op.alter_column('tubing_manufacturers', 'quality_certs',
+               existing_type=postgresql.JSONB(astext_type=sa.Text()),
+               type_=sa.JSON(),
+               existing_nullable=True)
+    op.create_index(op.f('ix_tubing_manufacturers_id'), 'tubing_manufacturers', ['id'], unique=False)
+    op.alter_column('tubing_products', 'last_price_update',
+               existing_type=sa.DATE(),
+               type_=sa.DateTime(),
+               existing_nullable=True)
+    op.drop_constraint('tubing_products_specification_id_manufacturer_id_manufactur_key', 'tubing_products', type_='unique')
+    op.create_index(op.f('ix_tubing_products_id'), 'tubing_products', ['id'], unique=False)
+    op.create_index(op.f('ix_tubing_specifications_id'), 'tubing_specifications', ['id'], unique=False)
+    op.alter_column('user_requirements', 'due_date',
+               existing_type=sa.DATE(),
+               type_=sa.DateTime(),
+               existing_nullable=True)
+    op.create_index(op.f('ix_user_requirements_id'), 'user_requirements', ['id'], unique=False)
+    op.drop_constraint('user_requirements_material_id_fkey', 'user_requirements', type_='foreignkey')
+    op.drop_constraint('user_requirements_file_id_fkey', 'user_requirements', type_='foreignkey')
+    op.create_foreign_key(None, 'user_requirements', 'materials', ['material_id'], ['id'])
+    op.create_foreign_key(None, 'user_requirements', 'files', ['file_id'], ['id'])
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(None, 'user_requirements', type_='foreignkey')
+    op.drop_constraint(None, 'user_requirements', type_='foreignkey')
+    op.create_foreign_key('user_requirements_file_id_fkey', 'user_requirements', 'files', ['file_id'], ['id'], ondelete='CASCADE')
+    op.create_foreign_key('user_requirements_material_id_fkey', 'user_requirements', 'materials', ['material_id'], ['id'], ondelete='CASCADE')
+    op.drop_index(op.f('ix_user_requirements_id'), table_name='user_requirements')
+    op.alter_column('user_requirements', 'due_date',
+               existing_type=sa.DateTime(),
+               type_=sa.DATE(),
+               existing_nullable=True)
+    op.drop_index(op.f('ix_tubing_specifications_id'), table_name='tubing_specifications')
+    op.drop_index(op.f('ix_tubing_products_id'), table_name='tubing_products')
+    op.create_unique_constraint('tubing_products_specification_id_manufacturer_id_manufactur_key', 'tubing_products', ['specification_id', 'manufacturer_id', 'manufacturer_part_number'])
+    op.alter_column('tubing_products', 'last_price_update',
+               existing_type=sa.DateTime(),
+               type_=sa.DATE(),
+               existing_nullable=True)
+    op.drop_index(op.f('ix_tubing_manufacturers_id'), table_name='tubing_manufacturers')
+    op.alter_column('tubing_manufacturers', 'quality_certs',
+               existing_type=sa.JSON(),
+               type_=postgresql.JSONB(astext_type=sa.Text()),
+               existing_nullable=True)
+    op.alter_column('tubing_manufacturers', 'contact_info',
+               existing_type=sa.JSON(),
+               type_=postgresql.JSONB(astext_type=sa.Text()),
+               existing_nullable=True)
+    op.drop_index(op.f('ix_tubing_categories_id'), table_name='tubing_categories')
+    op.drop_index(op.f('ix_special_materials_id'), table_name='special_materials')
+    op.drop_index(op.f('ix_special_material_patterns_id'), table_name='special_material_patterns')
+    op.drop_index(op.f('ix_special_material_grades_id'), table_name='special_material_grades')
+    op.drop_index(op.f('ix_requirement_types_id'), table_name='requirement_types')
+    op.drop_index(op.f('ix_projects_official_project_code'), table_name='projects')
+    op.drop_index(op.f('ix_projects_id'), table_name='projects')
+    op.create_unique_constraint('projects_official_project_code_key', 'projects', ['official_project_code'])
+    op.create_index('idx_projects_official_code', 'projects', ['official_project_code'], unique=False)
+    op.create_index('idx_projects_design_code', 'projects', ['design_project_code'], unique=False)
+    op.add_column('pipe_details', sa.Column('material_spec', sa.VARCHAR(length=100), autoincrement=False, nullable=True))
+    op.add_column('pipe_details', sa.Column('material_id', sa.INTEGER(), autoincrement=False, nullable=True))
+    op.add_column('pipe_details', sa.Column('classification_confidence', sa.DOUBLE_PRECISION(precision=53), autoincrement=False, nullable=True))
+    op.add_column('pipe_details', sa.Column('additional_info', postgresql.JSONB(astext_type=sa.Text()), autoincrement=False, nullable=True))
+    op.add_column('pipe_details', sa.Column('outer_diameter', sa.VARCHAR(length=50), autoincrement=False, nullable=True))
+    op.drop_constraint(None, 'pipe_details', type_='foreignkey')
+    op.create_foreign_key('pipe_details_file_id_fkey', 'pipe_details', 'files', ['file_id'], ['id'], ondelete='CASCADE')
+    op.create_foreign_key('pipe_details_material_id_fkey', 'pipe_details', 'materials', ['material_id'], ['id'], ondelete='CASCADE')
+    op.drop_index(op.f('ix_pipe_details_id'), table_name='pipe_details')
+    op.alter_column('pipe_details', 'file_id',
+               existing_type=sa.INTEGER(),
+               nullable=True)
+    op.drop_column('pipe_details', 'schedule_confidence')
+    op.drop_column('pipe_details', 'end_prep_confidence')
+    op.drop_column('pipe_details', 'manufacturing_confidence')
+    op.drop_column('pipe_details', 'material_confidence')
+    op.drop_column('pipe_details', 'nominal_size')
+    op.drop_column('pipe_details', 'wall_thickness')
+    op.drop_column('pipe_details', 'material_type')
+    op.drop_column('pipe_details', 'material_grade')
+    op.drop_column('pipe_details', 'material_standard')
+    op.add_column('materials', sa.Column('classification_details', postgresql.JSONB(astext_type=sa.Text()), autoincrement=False, nullable=True))
+    op.drop_constraint(None, 'materials', type_='foreignkey')
+    op.create_foreign_key('materials_file_id_fkey', 'materials', 'files', ['file_id'], ['id'], ondelete='CASCADE')
+    op.drop_index(op.f('ix_materials_id'), table_name='materials')
+    op.create_index('idx_materials_material_size', 'materials', ['material_grade', 'size_spec'], unique=False)
+    op.create_index('idx_materials_file', 'materials', ['file_id'], unique=False)
+    op.create_index('idx_materials_classification_details', 'materials', ['classification_details'], unique=False, postgresql_using='gin')
+    op.create_index('idx_materials_category', 'materials', ['classified_category', 'classified_subcategory'], unique=False)
+    op.alter_column('materials', 'full_material_grade',
+               existing_type=sa.String(length=100),
+               type_=sa.TEXT(),
+               existing_nullable=True)
+    op.alter_column('materials', 'material_hash',
+               existing_type=sa.String(length=100),
+               type_=sa.VARCHAR(length=64),
+               existing_nullable=True)
+    op.alter_column('materials', 'verified_by',
+               existing_type=sa.String(length=50),
+               type_=sa.VARCHAR(length=100),
+               existing_nullable=True)
+    op.drop_index(op.f('ix_material_tubing_mapping_id'), table_name='material_tubing_mapping')
+    op.drop_index(op.f('ix_material_standards_standard_code'), table_name='material_standards')
+    op.drop_index(op.f('ix_material_standards_id'), table_name='material_standards')
+    op.create_unique_constraint('material_standards_standard_code_key', 'material_standards', ['standard_code'])
+    op.drop_index(op.f('ix_material_specifications_id'), table_name='material_specifications')
+    op.drop_index(op.f('ix_material_patterns_id'), table_name='material_patterns')
+    op.drop_index(op.f('ix_material_grades_id'), table_name='material_grades')
+    op.drop_index(op.f('ix_material_categories_id'), table_name='material_categories')
+    op.add_column('files', sa.Column('parsed_count', sa.INTEGER(), server_default=sa.text('0'), autoincrement=False, nullable=True))
+    op.add_column('files', sa.Column('job_no', sa.VARCHAR(length=50), autoincrement=False, nullable=True))
+    op.add_column('files', sa.Column('confirmed_by', sa.VARCHAR(length=100), autoincrement=False, nullable=True, comment='구매 수량 확정자'))
+    op.add_column('files', sa.Column('confirmed_at', postgresql.TIMESTAMP(), autoincrement=False, nullable=True, comment='구매 수량 확정 시간'))
+    op.add_column('files', sa.Column('bom_name', sa.VARCHAR(length=255), autoincrement=False, nullable=True))
+    op.add_column('files', sa.Column('purchase_confirmed', sa.BOOLEAN(), server_default=sa.text('false'), autoincrement=False, nullable=True, comment='구매 수량 확정 여부'))
+    op.add_column('files', sa.Column('classification_completed', sa.BOOLEAN(), server_default=sa.text('false'), autoincrement=False, nullable=True))
+    op.add_column('files', sa.Column('description', sa.TEXT(), autoincrement=False, nullable=True))
+    op.drop_constraint(None, 'files', type_='foreignkey')
+    op.create_foreign_key('files_project_id_fkey', 'files', 'projects', ['project_id'], ['id'], ondelete='CASCADE')
+    op.drop_index(op.f('ix_files_id'), table_name='files')
+    op.create_index('idx_files_uploaded_by', 'files', ['uploaded_by'], unique=False)
+    op.create_index('idx_files_purchase_confirmed', 'files', ['purchase_confirmed'], unique=False)
+    op.create_index('idx_files_project', 'files', ['project_id'], unique=False)
+    op.create_index('idx_files_active', 'files', ['is_active'], unique=False)
+    op.create_table('jobs',
+    sa.Column('job_no', sa.VARCHAR(length=50), autoincrement=False, nullable=False),
+    sa.Column('job_name', sa.VARCHAR(length=200), autoincrement=False, nullable=False),
+    sa.Column('client_name', sa.VARCHAR(length=100), autoincrement=False, nullable=False),
+    sa.Column('end_user', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('epc_company', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('project_site', sa.VARCHAR(length=200), autoincrement=False, nullable=True),
+    sa.Column('contract_date', sa.DATE(), autoincrement=False, nullable=True),
+    sa.Column('delivery_date', sa.DATE(), autoincrement=False, nullable=True),
+    sa.Column('delivery_terms', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('status', sa.VARCHAR(length=20), server_default=sa.text("'진행중'::character varying"), autoincrement=False, nullable=True),
+    sa.Column('delivery_completed_date', sa.DATE(), autoincrement=False, nullable=True),
+    sa.Column('project_closed_date', sa.DATE(), autoincrement=False, nullable=True),
+    sa.Column('description', sa.TEXT(), autoincrement=False, nullable=True),
+    sa.Column('created_by', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('updated_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('is_active', sa.BOOLEAN(), server_default=sa.text('true'), autoincrement=False, nullable=True),
+    sa.Column('updated_by', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('assigned_to', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('project_type', sa.VARCHAR(length=50), server_default=sa.text("'냉동기'::character varying"), autoincrement=False, nullable=False),
+    sa.PrimaryKeyConstraint('job_no', name='jobs_pkey')
+    )
+    op.create_table('users',
+    sa.Column('user_id', sa.INTEGER(), server_default=sa.text("nextval('users_user_id_seq'::regclass)"), autoincrement=True, nullable=False),
+    sa.Column('username', sa.VARCHAR(length=50), autoincrement=False, nullable=False),
+    sa.Column('password', sa.VARCHAR(length=255), autoincrement=False, nullable=False),
+    sa.Column('name', sa.VARCHAR(length=100), autoincrement=False, nullable=False),
+    sa.Column('email', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('role', sa.VARCHAR(length=20), server_default=sa.text("'user'::character varying"), autoincrement=False, nullable=True),
+    sa.Column('access_level', sa.VARCHAR(length=20), server_default=sa.text("'worker'::character varying"), autoincrement=False, nullable=True),
+    sa.Column('is_active', sa.BOOLEAN(), server_default=sa.text('true'), autoincrement=False, nullable=True),
+    sa.Column('failed_login_attempts', sa.INTEGER(), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('locked_until', postgresql.TIMESTAMP(), autoincrement=False, nullable=True),
+    sa.Column('department', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('position', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('phone', sa.VARCHAR(length=20), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('updated_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('last_login_at', postgresql.TIMESTAMP(), autoincrement=False, nullable=True),
+    sa.Column('status', sa.VARCHAR(length=20), server_default=sa.text("'active'::character varying"), autoincrement=False, nullable=True),
+    sa.CheckConstraint("access_level::text = ANY (ARRAY['admin'::character varying, 'system'::character varying, 'group_leader'::character varying, 'support_team'::character varying, 'worker'::character varying]::text[])", name='users_access_level_check'),
+    sa.CheckConstraint("role::text = ANY (ARRAY['admin'::character varying, 'system'::character varying, 'leader'::character varying, 'support'::character varying, 'user'::character varying]::text[])", name='users_role_check'),
+    sa.PrimaryKeyConstraint('user_id', name='users_pkey'),
+    sa.UniqueConstraint('username', name='users_username_key'),
+    postgresql_ignore_search_path=False
+    )
+    op.create_table('inventory_transfers',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('revision_change_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('material_description', sa.TEXT(), autoincrement=False, nullable=False),
+    sa.Column('category', sa.VARCHAR(length=50), autoincrement=False, nullable=False),
+    sa.Column('quantity', sa.NUMERIC(precision=10, scale=3), autoincrement=False, nullable=False),
+    sa.Column('unit', sa.VARCHAR(length=10), autoincrement=False, nullable=False),
+    sa.Column('inventory_location', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('storage_notes', sa.TEXT(), autoincrement=False, nullable=True),
+    sa.Column('transferred_by', sa.VARCHAR(length=100), autoincrement=False, nullable=False),
+    sa.Column('transferred_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('status', sa.VARCHAR(length=20), server_default=sa.text("'transferred'::character varying"), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['revision_change_id'], ['revision_material_changes.id'], name='inventory_transfers_revision_change_id_fkey'),
+    sa.PrimaryKeyConstraint('id', name='inventory_transfers_pkey')
+    )
+    op.create_index('idx_inventory_transfers_material', 'inventory_transfers', ['material_description'], unique=False)
+    op.create_index('idx_inventory_transfers_date', 'inventory_transfers', ['transferred_at'], unique=False)
+    op.create_table('revision_action_logs',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('session_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('revision_change_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('action_type', sa.VARCHAR(length=30), autoincrement=False, nullable=False),
+    sa.Column('action_description', sa.TEXT(), autoincrement=False, nullable=True),
+    sa.Column('executed_by', sa.VARCHAR(length=100), autoincrement=False, nullable=False),
+    sa.Column('executed_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('result', sa.VARCHAR(length=20), autoincrement=False, nullable=False),
+    sa.Column('result_message', sa.TEXT(), autoincrement=False, nullable=True),
+    sa.Column('result_data', postgresql.JSONB(astext_type=sa.Text()), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['revision_change_id'], ['revision_material_changes.id'], name='revision_action_logs_revision_change_id_fkey'),
+    sa.ForeignKeyConstraint(['session_id'], ['revision_sessions.id'], name='revision_action_logs_session_id_fkey'),
+    sa.PrimaryKeyConstraint('id', name='revision_action_logs_pkey')
+    )
+    op.create_index('idx_revision_logs_type', 'revision_action_logs', ['action_type'], unique=False)
+    op.create_index('idx_revision_logs_session', 'revision_action_logs', ['session_id'], unique=False)
+    op.create_index('idx_revision_logs_date', 'revision_action_logs', ['executed_at'], unique=False)
+    op.create_table('revision_material_changes',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('session_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('material_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('previous_material_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('material_description', sa.TEXT(), autoincrement=False, nullable=False),
+    sa.Column('category', sa.VARCHAR(length=50), autoincrement=False, nullable=False),
+    sa.Column('change_type', sa.VARCHAR(length=20), autoincrement=False, nullable=False),
+    sa.Column('previous_quantity', sa.NUMERIC(precision=10, scale=3), autoincrement=False, nullable=True),
+    sa.Column('current_quantity', sa.NUMERIC(precision=10, scale=3), autoincrement=False, nullable=True),
+    sa.Column('quantity_difference', sa.NUMERIC(precision=10, scale=3), autoincrement=False, nullable=True),
+    sa.Column('purchase_status', sa.VARCHAR(length=20), autoincrement=False, nullable=False),
+    sa.Column('purchase_confirmed_at', postgresql.TIMESTAMP(), autoincrement=False, nullable=True),
+    sa.Column('revision_action', sa.VARCHAR(length=30), autoincrement=False, nullable=True),
+    sa.Column('action_status', sa.VARCHAR(length=20), server_default=sa.text("'pending'::character varying"), autoincrement=False, nullable=True),
+    sa.Column('processed_by', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('processed_at', postgresql.TIMESTAMP(), autoincrement=False, nullable=True),
+    sa.Column('processing_notes', sa.TEXT(), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['material_id'], ['materials.id'], name='revision_material_changes_material_id_fkey'),
+    sa.ForeignKeyConstraint(['session_id'], ['revision_sessions.id'], name='revision_material_changes_session_id_fkey', ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id', name='revision_material_changes_pkey')
+    )
+    op.create_index('idx_revision_changes_status', 'revision_material_changes', ['action_status'], unique=False)
+    op.create_index('idx_revision_changes_session', 'revision_material_changes', ['session_id'], unique=False)
+    op.create_index('idx_revision_changes_action', 'revision_material_changes', ['revision_action'], unique=False)
+    op.create_table('gasket_details',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('material_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('file_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('gasket_type', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('gasket_subtype', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('material_type', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('filler_material', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('size_inches', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('pressure_rating', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('thickness', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('temperature_range', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('fire_safe', sa.BOOLEAN(), autoincrement=False, nullable=True),
+    sa.Column('classification_confidence', sa.DOUBLE_PRECISION(precision=53), autoincrement=False, nullable=True),
+    sa.Column('additional_info', postgresql.JSONB(astext_type=sa.Text()), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('updated_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['file_id'], ['files.id'], name='gasket_details_file_id_fkey', ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['material_id'], ['materials.id'], name='gasket_details_material_id_fkey', ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id', name='gasket_details_pkey')
+    )
+    op.create_table('purchase_requests',
+    sa.Column('request_id', sa.INTEGER(), server_default=sa.text("nextval('purchase_requests_request_id_seq'::regclass)"), autoincrement=True, nullable=False),
+    sa.Column('request_no', sa.VARCHAR(length=50), autoincrement=False, nullable=False),
+    sa.Column('file_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('job_no', sa.VARCHAR(length=50), autoincrement=False, nullable=False),
+    sa.Column('category', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('material_count', sa.INTEGER(), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('excel_file_path', sa.VARCHAR(length=500), autoincrement=False, nullable=True),
+    sa.Column('project_name', sa.VARCHAR(length=200), autoincrement=False, nullable=True),
+    sa.Column('requested_by', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('requested_by_username', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('request_date', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('status', sa.VARCHAR(length=20), server_default=sa.text("'pending'::character varying"), autoincrement=False, nullable=True),
+    sa.Column('total_items', sa.INTEGER(), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('notes', sa.TEXT(), autoincrement=False, nullable=True),
+    sa.Column('approved_by', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('approved_by_username', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('approved_at', postgresql.TIMESTAMP(), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('updated_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['approved_by'], ['users.user_id'], name='purchase_requests_approved_by_fkey'),
+    sa.ForeignKeyConstraint(['file_id'], ['files.id'], name='purchase_requests_file_id_fkey'),
+    sa.ForeignKeyConstraint(['requested_by'], ['users.user_id'], name='purchase_requests_requested_by_fkey'),
+    sa.PrimaryKeyConstraint('request_id', name='purchase_requests_pkey'),
+    sa.UniqueConstraint('request_no', name='purchase_requests_request_no_key'),
+    postgresql_ignore_search_path=False
+    )
+    op.create_index('idx_purchase_requests_status', 'purchase_requests', ['status'], unique=False)
+    op.create_index('idx_purchase_requests_requested_by', 'purchase_requests', ['requested_by'], unique=False)
+    op.create_index('idx_purchase_requests_job_no', 'purchase_requests', ['job_no'], unique=False)
+    op.create_table('permissions',
+    sa.Column('permission_id', sa.INTEGER(), server_default=sa.text("nextval('permissions_permission_id_seq'::regclass)"), autoincrement=True, nullable=False),
+    sa.Column('permission_name', sa.VARCHAR(length=50), autoincrement=False, nullable=False),
+    sa.Column('description', sa.TEXT(), autoincrement=False, nullable=True),
+    sa.Column('module', sa.VARCHAR(length=30), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.PrimaryKeyConstraint('permission_id', name='permissions_pkey'),
+    sa.UniqueConstraint('permission_name', name='permissions_permission_name_key'),
+    postgresql_ignore_search_path=False
+    )
+    op.create_table('bolt_details',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('material_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('file_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('bolt_type', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('thread_type', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('diameter', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('length', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('material_standard', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('material_grade', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('coating_type', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('pressure_rating', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('includes_nut', sa.BOOLEAN(), autoincrement=False, nullable=True),
+    sa.Column('includes_washer', sa.BOOLEAN(), autoincrement=False, nullable=True),
+    sa.Column('nut_type', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('washer_type', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('classification_confidence', sa.DOUBLE_PRECISION(precision=53), autoincrement=False, nullable=True),
+    sa.Column('additional_info', postgresql.JSONB(astext_type=sa.Text()), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('updated_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['file_id'], ['files.id'], name='bolt_details_file_id_fkey', ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['material_id'], ['materials.id'], name='bolt_details_material_id_fkey', ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id', name='bolt_details_pkey')
+    )
+    op.create_table('material_purchase_mapping',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('material_id', sa.INTEGER(), autoincrement=False, nullable=False),
+    sa.Column('purchase_item_id', sa.INTEGER(), autoincrement=False, nullable=False),
+    sa.Column('quantity_ratio', sa.NUMERIC(precision=5, scale=2), server_default=sa.text('1.0'), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['material_id'], ['materials.id'], name='material_purchase_mapping_material_id_fkey', ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['purchase_item_id'], ['purchase_items.id'], name='material_purchase_mapping_purchase_item_id_fkey', ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id', name='material_purchase_mapping_pkey'),
+    sa.UniqueConstraint('material_id', 'purchase_item_id', name='material_purchase_mapping_material_id_purchase_item_id_key')
+    )
+    op.create_table('confirmed_purchase_items',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('confirmation_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('item_code', sa.VARCHAR(length=100), autoincrement=False, nullable=False),
+    sa.Column('category', sa.VARCHAR(length=50), autoincrement=False, nullable=False),
+    sa.Column('specification', sa.TEXT(), autoincrement=False, nullable=True),
+    sa.Column('size', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('material', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('bom_quantity', sa.NUMERIC(precision=15, scale=3), server_default=sa.text('0'), autoincrement=False, nullable=False),
+    sa.Column('calculated_qty', sa.NUMERIC(precision=15, scale=3), server_default=sa.text('0'), autoincrement=False, nullable=False),
+    sa.Column('unit', sa.VARCHAR(length=20), server_default=sa.text("'EA'::character varying"), autoincrement=False, nullable=False),
+    sa.Column('safety_factor', sa.NUMERIC(precision=5, scale=3), server_default=sa.text('1.0'), autoincrement=False, nullable=False),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['confirmation_id'], ['purchase_confirmations.id'], name='confirmed_purchase_items_confirmation_id_fkey', ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id', name='confirmed_purchase_items_pkey'),
+    comment='확정된 구매 품목 상세 테이블'
+    )
+    op.create_index('idx_confirmed_purchase_items_confirmation', 'confirmed_purchase_items', ['confirmation_id'], unique=False)
+    op.create_index('idx_confirmed_purchase_items_category', 'confirmed_purchase_items', ['category'], unique=False)
+    op.create_table('material_comparison_details',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('comparison_id', sa.INTEGER(), autoincrement=False, nullable=False),
+    sa.Column('material_hash', sa.VARCHAR(length=32), autoincrement=False, nullable=False),
+    sa.Column('change_type', sa.VARCHAR(length=20), autoincrement=False, nullable=False),
+    sa.Column('description', sa.TEXT(), autoincrement=False, nullable=False),
+    sa.Column('size_spec', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('material_grade', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('previous_quantity', sa.NUMERIC(precision=10, scale=3), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('current_quantity', sa.NUMERIC(precision=10, scale=3), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('quantity_diff', sa.NUMERIC(precision=10, scale=3), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('additional_purchase_needed', sa.NUMERIC(precision=10, scale=3), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('classified_category', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('classification_confidence', sa.NUMERIC(precision=3, scale=2), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['comparison_id'], ['material_revisions_comparison.id'], name='material_comparison_details_comparison_id_fkey', ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id', name='material_comparison_details_pkey')
+    )
+    op.create_table('purchase_request_items',
+    sa.Column('item_id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('request_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('material_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('description', sa.TEXT(), autoincrement=False, nullable=False),
+    sa.Column('category', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('subcategory', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('material_grade', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('size_spec', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('quantity', sa.NUMERIC(precision=10, scale=3), autoincrement=False, nullable=False),
+    sa.Column('unit', sa.VARCHAR(length=10), autoincrement=False, nullable=False),
+    sa.Column('drawing_name', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('notes', sa.TEXT(), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('user_requirement', sa.TEXT(), autoincrement=False, nullable=True),
+    sa.Column('is_ordered', sa.BOOLEAN(), server_default=sa.text('false'), autoincrement=False, nullable=True),
+    sa.Column('is_received', sa.BOOLEAN(), server_default=sa.text('false'), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['material_id'], ['materials.id'], name='purchase_request_items_material_id_fkey', ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['request_id'], ['purchase_requests.request_id'], name='purchase_request_items_request_id_fkey', ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('item_id', name='purchase_request_items_pkey')
+    )
+    op.create_index('idx_purchase_request_items_request_id', 'purchase_request_items', ['request_id'], unique=False)
+    op.create_index('idx_purchase_request_items_material_id', 'purchase_request_items', ['material_id'], unique=False)
+    op.create_index('idx_purchase_request_items_category', 'purchase_request_items', ['category'], unique=False)
+    op.create_table('material_revisions_comparison',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('job_no', sa.VARCHAR(length=50), autoincrement=False, nullable=False),
+    sa.Column('current_revision', sa.VARCHAR(length=20), autoincrement=False, nullable=False),
+    sa.Column('previous_revision', sa.VARCHAR(length=20), autoincrement=False, nullable=False),
+    sa.Column('current_file_id', sa.INTEGER(), autoincrement=False, nullable=False),
+    sa.Column('previous_file_id', sa.INTEGER(), autoincrement=False, nullable=False),
+    sa.Column('total_current_items', sa.INTEGER(), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('total_previous_items', sa.INTEGER(), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('new_items_count', sa.INTEGER(), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('modified_items_count', sa.INTEGER(), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('removed_items_count', sa.INTEGER(), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('unchanged_items_count', sa.INTEGER(), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('comparison_details', postgresql.JSONB(astext_type=sa.Text()), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('created_by', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['current_file_id'], ['files.id'], name='material_revisions_comparison_current_file_id_fkey'),
+    sa.ForeignKeyConstraint(['previous_file_id'], ['files.id'], name='material_revisions_comparison_previous_file_id_fkey'),
+    sa.PrimaryKeyConstraint('id', name='material_revisions_comparison_pkey'),
+    sa.UniqueConstraint('job_no', 'current_revision', 'previous_revision', name='material_revisions_comparison_job_no_current_revision_previ_key')
+    )
+    op.create_table('login_logs',
+    sa.Column('log_id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('user_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('login_time', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('ip_address', sa.VARCHAR(length=45), autoincrement=False, nullable=True),
+    sa.Column('user_agent', sa.TEXT(), autoincrement=False, nullable=True),
+    sa.Column('login_status', sa.VARCHAR(length=20), autoincrement=False, nullable=True),
+    sa.Column('failure_reason', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('session_duration', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.CheckConstraint("login_status::text = ANY (ARRAY['success'::character varying, 'failed'::character varying]::text[])", name='login_logs_login_status_check'),
+    sa.ForeignKeyConstraint(['user_id'], ['users.user_id'], name='login_logs_user_id_fkey', ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('log_id', name='login_logs_pkey')
+    )
+    op.create_table('user_sessions',
+    sa.Column('session_id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('user_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('refresh_token', sa.VARCHAR(length=500), autoincrement=False, nullable=False),
+    sa.Column('expires_at', postgresql.TIMESTAMP(), autoincrement=False, nullable=False),
+    sa.Column('ip_address', sa.VARCHAR(length=45), autoincrement=False, nullable=True),
+    sa.Column('user_agent', sa.TEXT(), autoincrement=False, nullable=True),
+    sa.Column('is_active', sa.BOOLEAN(), server_default=sa.text('true'), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('updated_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['user_id'], ['users.user_id'], name='user_sessions_user_id_fkey', ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('session_id', name='user_sessions_pkey')
+    )
+    op.create_table('pipe_end_preparations',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('material_id', sa.INTEGER(), autoincrement=False, nullable=False),
+    sa.Column('file_id', sa.INTEGER(), autoincrement=False, nullable=False),
+    sa.Column('end_preparation_type', sa.VARCHAR(length=50), server_default=sa.text("'PBE'::character varying"), autoincrement=False, nullable=True),
+    sa.Column('end_preparation_code', sa.VARCHAR(length=20), autoincrement=False, nullable=True),
+    sa.Column('machining_required', sa.BOOLEAN(), server_default=sa.text('false'), autoincrement=False, nullable=True),
+    sa.Column('cutting_note', sa.TEXT(), autoincrement=False, nullable=True),
+    sa.Column('original_description', sa.TEXT(), autoincrement=False, nullable=False),
+    sa.Column('clean_description', sa.TEXT(), autoincrement=False, nullable=False),
+    sa.Column('confidence', sa.DOUBLE_PRECISION(precision=53), server_default=sa.text('0.0'), autoincrement=False, nullable=True),
+    sa.Column('matched_pattern', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('updated_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['file_id'], ['files.id'], name='pipe_end_preparations_file_id_fkey', ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['material_id'], ['materials.id'], name='pipe_end_preparations_material_id_fkey', ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id', name='pipe_end_preparations_pkey')
+    )
+    op.create_table('special_material_details',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('material_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('file_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('special_type', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('special_subtype', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('material_standard', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('material_grade', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('specifications', sa.TEXT(), autoincrement=False, nullable=True),
+    sa.Column('dimensions', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('weight_kg', sa.NUMERIC(precision=10, scale=3), autoincrement=False, nullable=True),
+    sa.Column('classification_confidence', sa.NUMERIC(precision=3, scale=2), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('updated_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['file_id'], ['files.id'], name='special_material_details_file_id_fkey', ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['material_id'], ['materials.id'], name='special_material_details_material_id_fkey', ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id', name='special_material_details_pkey')
+    )
+    op.create_index('idx_special_material_details_material_id', 'special_material_details', ['material_id'], unique=False)
+    op.create_index('idx_special_material_details_file_id', 'special_material_details', ['file_id'], unique=False)
+    op.create_table('flange_details',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('material_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('file_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('flange_type', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('facing_type', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('pressure_rating', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('material_standard', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('material_grade', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('size_inches', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('bolt_hole_count', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('bolt_hole_size', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('classification_confidence', sa.DOUBLE_PRECISION(precision=53), autoincrement=False, nullable=True),
+    sa.Column('additional_info', postgresql.JSONB(astext_type=sa.Text()), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('updated_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['file_id'], ['files.id'], name='flange_details_file_id_fkey', ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['material_id'], ['materials.id'], name='flange_details_material_id_fkey', ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id', name='flange_details_pkey')
+    )
+    op.create_table('fitting_details',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('material_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('file_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('fitting_type', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('fitting_subtype', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('connection_method', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('connection_code', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('pressure_rating', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('max_pressure', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('manufacturing_method', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('material_standard', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('material_grade', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('material_type', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('main_size', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('reduced_size', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('length_mm', sa.NUMERIC(precision=10, scale=3), autoincrement=False, nullable=True),
+    sa.Column('schedule', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('classification_confidence', sa.DOUBLE_PRECISION(precision=53), autoincrement=False, nullable=True),
+    sa.Column('additional_info', postgresql.JSONB(astext_type=sa.Text()), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('updated_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['file_id'], ['files.id'], name='fitting_details_file_id_fkey', ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['material_id'], ['materials.id'], name='fitting_details_material_id_fkey', ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id', name='fitting_details_pkey')
+    )
+    op.create_table('instrument_details',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('material_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('file_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('instrument_type', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('instrument_subtype', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('measurement_type', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('measurement_range', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('accuracy', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('connection_type', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('connection_size', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('body_material', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('wetted_parts_material', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('electrical_rating', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('output_signal', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('classification_confidence', sa.DOUBLE_PRECISION(precision=53), autoincrement=False, nullable=True),
+    sa.Column('additional_info', postgresql.JSONB(astext_type=sa.Text()), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('updated_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['file_id'], ['files.id'], name='instrument_details_file_id_fkey', ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['material_id'], ['materials.id'], name='instrument_details_material_id_fkey', ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id', name='instrument_details_pkey')
+    )
+    op.create_table('revision_sessions',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('job_no', sa.VARCHAR(length=50), autoincrement=False, nullable=False),
+    sa.Column('current_file_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('previous_file_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('current_revision', sa.VARCHAR(length=20), autoincrement=False, nullable=False),
+    sa.Column('previous_revision', sa.VARCHAR(length=20), autoincrement=False, nullable=False),
+    sa.Column('status', sa.VARCHAR(length=20), server_default=sa.text("'processing'::character varying"), autoincrement=False, nullable=True),
+    sa.Column('total_materials', sa.INTEGER(), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('processed_materials', sa.INTEGER(), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('added_count', sa.INTEGER(), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('removed_count', sa.INTEGER(), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('changed_count', sa.INTEGER(), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('unchanged_count', sa.INTEGER(), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('purchase_cancel_count', sa.INTEGER(), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('inventory_transfer_count', sa.INTEGER(), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('additional_purchase_count', sa.INTEGER(), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('created_by', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('completed_at', postgresql.TIMESTAMP(), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['current_file_id'], ['files.id'], name='revision_sessions_current_file_id_fkey'),
+    sa.ForeignKeyConstraint(['previous_file_id'], ['files.id'], name='revision_sessions_previous_file_id_fkey'),
+    sa.PrimaryKeyConstraint('id', name='revision_sessions_pkey')
+    )
+    op.create_index('idx_revision_sessions_status', 'revision_sessions', ['status'], unique=False)
+    op.create_index('idx_revision_sessions_job_no', 'revision_sessions', ['job_no'], unique=False)
+    op.create_table('purchase_items',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('item_code', sa.VARCHAR(length=100), autoincrement=False, nullable=False),
+    sa.Column('category', sa.VARCHAR(length=50), autoincrement=False, nullable=False),
+    sa.Column('specification', sa.TEXT(), autoincrement=False, nullable=False),
+    sa.Column('material_spec', sa.VARCHAR(length=200), autoincrement=False, nullable=True),
+    sa.Column('size_spec', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('unit', sa.VARCHAR(length=10), autoincrement=False, nullable=False),
+    sa.Column('bom_quantity', sa.NUMERIC(precision=10, scale=3), autoincrement=False, nullable=False),
+    sa.Column('safety_factor', sa.NUMERIC(precision=3, scale=2), server_default=sa.text('1.10'), autoincrement=False, nullable=True),
+    sa.Column('minimum_order_qty', sa.NUMERIC(precision=10, scale=3), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('order_unit_qty', sa.NUMERIC(precision=10, scale=3), server_default=sa.text('1'), autoincrement=False, nullable=True),
+    sa.Column('calculated_qty', sa.NUMERIC(precision=10, scale=3), autoincrement=False, nullable=True),
+    sa.Column('cutting_loss', sa.NUMERIC(precision=10, scale=3), server_default=sa.text('0'), autoincrement=False, nullable=True),
+    sa.Column('standard_length', sa.NUMERIC(precision=10, scale=3), autoincrement=False, nullable=True),
+    sa.Column('pipes_count', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('waste_length', sa.NUMERIC(precision=10, scale=3), autoincrement=False, nullable=True),
+    sa.Column('detailed_spec', postgresql.JSONB(astext_type=sa.Text()), autoincrement=False, nullable=True),
+    sa.Column('preferred_supplier', sa.VARCHAR(length=200), autoincrement=False, nullable=True),
+    sa.Column('last_unit_price', sa.NUMERIC(precision=10, scale=2), autoincrement=False, nullable=True),
+    sa.Column('currency', sa.VARCHAR(length=10), server_default=sa.text("'KRW'::character varying"), autoincrement=False, nullable=True),
+    sa.Column('lead_time_days', sa.INTEGER(), server_default=sa.text('30'), autoincrement=False, nullable=True),
+    sa.Column('job_no', sa.VARCHAR(length=50), autoincrement=False, nullable=False),
+    sa.Column('revision', sa.VARCHAR(length=20), server_default=sa.text("'Rev.0'::character varying"), autoincrement=False, nullable=True),
+    sa.Column('file_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('is_active', sa.BOOLEAN(), server_default=sa.text('true'), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('updated_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('created_by', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('updated_by', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('approved_by', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('approved_at', postgresql.TIMESTAMP(), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['file_id'], ['files.id'], name='purchase_items_file_id_fkey', ondelete='SET NULL'),
+    sa.PrimaryKeyConstraint('id', name='purchase_items_pkey'),
+    sa.UniqueConstraint('item_code', name='purchase_items_item_code_key')
+    )
+    op.create_table('valve_details',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('material_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('file_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('valve_type', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('valve_subtype', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('actuator_type', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('connection_method', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('pressure_rating', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('pressure_class', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('body_material', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('trim_material', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('size_inches', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('fire_safe', sa.BOOLEAN(), autoincrement=False, nullable=True),
+    sa.Column('low_temp_service', sa.BOOLEAN(), autoincrement=False, nullable=True),
+    sa.Column('special_features', postgresql.JSONB(astext_type=sa.Text()), autoincrement=False, nullable=True),
+    sa.Column('classification_confidence', sa.DOUBLE_PRECISION(precision=53), autoincrement=False, nullable=True),
+    sa.Column('additional_info', postgresql.JSONB(astext_type=sa.Text()), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('updated_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['file_id'], ['files.id'], name='valve_details_file_id_fkey', ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['material_id'], ['materials.id'], name='valve_details_material_id_fkey', ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id', name='valve_details_pkey')
+    )
+    op.create_table('purchase_confirmations',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('job_no', sa.VARCHAR(length=50), autoincrement=False, nullable=False),
+    sa.Column('file_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('bom_name', sa.VARCHAR(length=255), autoincrement=False, nullable=False),
+    sa.Column('revision', sa.VARCHAR(length=50), server_default=sa.text("'Rev.0'::character varying"), autoincrement=False, nullable=False),
+    sa.Column('confirmed_at', postgresql.TIMESTAMP(), autoincrement=False, nullable=False),
+    sa.Column('confirmed_by', sa.VARCHAR(length=100), autoincrement=False, nullable=False),
+    sa.Column('is_active', sa.BOOLEAN(), server_default=sa.text('true'), autoincrement=False, nullable=False),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('updated_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['file_id'], ['files.id'], name='purchase_confirmations_file_id_fkey'),
+    sa.PrimaryKeyConstraint('id', name='purchase_confirmations_pkey'),
+    comment='구매 수량 확정 마스터 테이블'
+    )
+    op.create_index('idx_purchase_confirmations_job_revision', 'purchase_confirmations', ['job_no', 'revision', 'is_active'], unique=False)
+    op.create_table('material_purchase_tracking',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('material_hash', sa.VARCHAR(length=64), autoincrement=False, nullable=False),
+    sa.Column('original_description', sa.TEXT(), autoincrement=False, nullable=False),
+    sa.Column('size_spec', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('material_grade', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('bom_quantity', sa.NUMERIC(precision=10, scale=3), autoincrement=False, nullable=False),
+    sa.Column('confirmed_quantity', sa.NUMERIC(precision=10, scale=3), autoincrement=False, nullable=True),
+    sa.Column('purchase_quantity', sa.NUMERIC(precision=10, scale=3), autoincrement=False, nullable=True),
+    sa.Column('status', sa.VARCHAR(length=20), server_default=sa.text("'pending'::character varying"), autoincrement=False, nullable=True),
+    sa.Column('confirmed_by', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('confirmed_at', postgresql.TIMESTAMP(), autoincrement=False, nullable=True),
+    sa.Column('ordered_by', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('ordered_at', postgresql.TIMESTAMP(), autoincrement=False, nullable=True),
+    sa.Column('approved_by', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('approved_at', postgresql.TIMESTAMP(), autoincrement=False, nullable=True),
+    sa.Column('job_no', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('revision', sa.VARCHAR(length=20), autoincrement=False, nullable=True),
+    sa.Column('file_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('updated_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('description', sa.TEXT(), autoincrement=False, nullable=True),
+    sa.Column('purchase_status', sa.VARCHAR(length=20), server_default=sa.text("'pending'::character varying"), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['file_id'], ['files.id'], name='material_purchase_tracking_file_id_fkey', ondelete='SET NULL'),
+    sa.PrimaryKeyConstraint('id', name='material_purchase_tracking_pkey')
+    )
+    op.create_table('support_details',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('material_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('file_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('support_type', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('support_subtype', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('load_rating', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('load_capacity', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('material_standard', sa.VARCHAR(length=100), autoincrement=False, nullable=True),
+    sa.Column('material_grade', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('pipe_size', sa.VARCHAR(length=20), autoincrement=False, nullable=True),
+    sa.Column('length_mm', sa.NUMERIC(precision=10, scale=2), autoincrement=False, nullable=True),
+    sa.Column('width_mm', sa.NUMERIC(precision=10, scale=2), autoincrement=False, nullable=True),
+    sa.Column('height_mm', sa.NUMERIC(precision=10, scale=2), autoincrement=False, nullable=True),
+    sa.Column('classification_confidence', sa.NUMERIC(precision=3, scale=2), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.Column('updated_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['file_id'], ['files.id'], name='support_details_file_id_fkey', ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['material_id'], ['materials.id'], name='support_details_material_id_fkey', ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id', name='support_details_pkey')
+    )
+    op.create_index('idx_support_details_material_id', 'support_details', ['material_id'], unique=False)
+    op.create_index('idx_support_details_file_id', 'support_details', ['file_id'], unique=False)
+    op.create_table('user_activity_logs',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('user_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('username', sa.VARCHAR(length=100), autoincrement=False, nullable=False),
+    sa.Column('activity_type', sa.VARCHAR(length=50), autoincrement=False, nullable=False),
+    sa.Column('activity_description', sa.TEXT(), autoincrement=False, nullable=True),
+    sa.Column('target_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('target_type', sa.VARCHAR(length=50), autoincrement=False, nullable=True),
+    sa.Column('ip_address', sa.VARCHAR(length=45), autoincrement=False, nullable=True),
+    sa.Column('user_agent', sa.TEXT(), autoincrement=False, nullable=True),
+    sa.Column('metadata', postgresql.JSONB(astext_type=sa.Text()), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.PrimaryKeyConstraint('id', name='user_activity_logs_pkey')
+    )
+    op.create_table('role_permissions',
+    sa.Column('role_permission_id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('role', sa.VARCHAR(length=20), autoincrement=False, nullable=False),
+    sa.Column('permission_id', sa.INTEGER(), autoincrement=False, nullable=True),
+    sa.Column('created_at', postgresql.TIMESTAMP(), server_default=sa.text('CURRENT_TIMESTAMP'), autoincrement=False, nullable=True),
+    sa.ForeignKeyConstraint(['permission_id'], ['permissions.permission_id'], name='role_permissions_permission_id_fkey', ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('role_permission_id', name='role_permissions_pkey'),
+    sa.UniqueConstraint('role', 'permission_id', name='role_permissions_role_permission_id_key')
+    )
+    # ### end Alembic commands ###

backend/app/auth/auth_controller.py

@@ -323,6 +323,75 @@ async def verify_token(
 
 
 # 관리자 전용 엔드포인트들
+@router.get("/users/suspended")
+async def get_suspended_users(
+    credentials: HTTPAuthorizationCredentials = Depends(security),
+    db: Session = Depends(get_db)
+):
+    """
+    정지된 사용자 목록 조회 (관리자 전용)
+    
+    Args:
+        credentials: JWT 토큰
+        db: 데이터베이스 세션
+        
+    Returns:
+        Dict: 정지된 사용자 목록
+    """
+    try:
+        # 토큰 검증 및 권한 확인
+        payload = jwt_service.verify_access_token(credentials.credentials)
+        if payload['role'] not in ['admin', 'system']:
+            raise HTTPException(
+                status_code=status.HTTP_403_FORBIDDEN,
+                detail="관리자 이상의 권한이 필요합니다"
+            )
+        
+        # 정지된 사용자 조회
+        from sqlalchemy import text
+        query = text("""
+            SELECT 
+                user_id, username, name, email, role, department, position,
+                phone, status, created_at, updated_at
+            FROM users
+            WHERE status = 'suspended'
+            ORDER BY updated_at DESC
+        """)
+        
+        results = db.execute(query).fetchall()
+        
+        suspended_users = []
+        for row in results:
+            suspended_users.append({
+                "user_id": row.user_id,
+                "username": row.username,
+                "name": row.name,
+                "email": row.email,
+                "role": row.role,
+                "department": row.department,
+                "position": row.position,
+                "phone": row.phone,
+                "status": row.status,
+                "created_at": row.created_at.isoformat() if row.created_at else None,
+                "updated_at": row.updated_at.isoformat() if row.updated_at else None
+            })
+        
+        return {
+            "success": True,
+            "users": suspended_users,
+            "count": len(suspended_users)
+        }
+        
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f"Failed to get suspended users: {str(e)}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail="정지된 사용자 목록 조회 중 오류가 발생했습니다"
+        )
+
+
 @router.get("/users")
 async def get_all_users(
     skip: int = 0,
@@ -371,6 +440,155 @@ async def get_all_users(
         )
 
 
+@router.patch("/users/{user_id}/suspend")
+async def suspend_user(
+    user_id: int,
+    credentials: HTTPAuthorizationCredentials = Depends(security),
+    db: Session = Depends(get_db)
+):
+    """
+    사용자 정지 (관리자 전용)
+    
+    Args:
+        user_id: 정지할 사용자 ID
+        credentials: JWT 토큰
+        db: 데이터베이스 세션
+        
+    Returns:
+        Dict: 정지 결과
+    """
+    try:
+        # 토큰 검증 및 권한 확인
+        payload = jwt_service.verify_access_token(credentials.credentials)
+        if payload['role'] not in ['system', 'admin']:
+            raise HTTPException(
+                status_code=status.HTTP_403_FORBIDDEN,
+                detail="관리자만 사용자를 정지할 수 있습니다"
+            )
+        
+        # 자기 자신 정지 방지
+        if payload['user_id'] == user_id:
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail="자기 자신은 정지할 수 없습니다"
+            )
+        
+        # 사용자 정지
+        from sqlalchemy import text
+        update_query = text("""
+            UPDATE users 
+            SET status = 'suspended',
+                is_active = FALSE,
+                updated_at = CURRENT_TIMESTAMP
+            WHERE user_id = :user_id AND status = 'active'
+            RETURNING user_id, username, name, status
+        """)
+        
+        result = db.execute(update_query, {"user_id": user_id}).fetchone()
+        db.commit()
+        
+        if not result:
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail="사용자를 찾을 수 없거나 이미 정지된 상태입니다"
+            )
+        
+        logger.info(f"User {result.username} suspended by {payload['username']}")
+        
+        return {
+            "success": True,
+            "message": f"{result.name} 사용자가 정지되었습니다",
+            "user": {
+                "user_id": result.user_id,
+                "username": result.username,
+                "name": result.name,
+                "status": result.status
+            }
+        }
+        
+    except HTTPException:
+        raise
+    except Exception as e:
+        db.rollback()
+        logger.error(f"Failed to suspend user {user_id}: {str(e)}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"사용자 정지 중 오류가 발생했습니다: {str(e)}"
+        )
+
+
+@router.patch("/users/{user_id}/reactivate")
+async def reactivate_user(
+    user_id: int,
+    credentials: HTTPAuthorizationCredentials = Depends(security),
+    db: Session = Depends(get_db)
+):
+    """
+    사용자 재활성화 (관리자 전용)
+    
+    Args:
+        user_id: 재활성화할 사용자 ID
+        credentials: JWT 토큰
+        db: 데이터베이스 세션
+        
+    Returns:
+        Dict: 재활성화 결과
+    """
+    try:
+        # 토큰 검증 및 권한 확인
+        payload = jwt_service.verify_access_token(credentials.credentials)
+        if payload['role'] not in ['system', 'admin']:
+            raise HTTPException(
+                status_code=status.HTTP_403_FORBIDDEN,
+                detail="관리자만 사용자를 재활성화할 수 있습니다"
+            )
+        
+        # 사용자 재활성화
+        from sqlalchemy import text
+        update_query = text("""
+            UPDATE users 
+            SET status = 'active',
+                is_active = TRUE,
+                failed_login_attempts = 0,
+                locked_until = NULL,
+                updated_at = CURRENT_TIMESTAMP
+            WHERE user_id = :user_id AND status = 'suspended'
+            RETURNING user_id, username, name, status
+        """)
+        
+        result = db.execute(update_query, {"user_id": user_id}).fetchone()
+        db.commit()
+        
+        if not result:
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail="사용자를 찾을 수 없거나 정지 상태가 아닙니다"
+            )
+        
+        logger.info(f"User {result.username} reactivated by {payload['username']}")
+        
+        return {
+            "success": True,
+            "message": f"{result.name} 사용자가 재활성화되었습니다",
+            "user": {
+                "user_id": result.user_id,
+                "username": result.username,
+                "name": result.name,
+                "status": result.status
+            }
+        }
+        
+    except HTTPException:
+        raise
+    except Exception as e:
+        db.rollback()
+        logger.error(f"Failed to reactivate user {user_id}: {str(e)}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"사용자 재활성화 중 오류가 발생했습니다: {str(e)}"
+        )
+
+
 @router.delete("/users/{user_id}")
 async def delete_user(
     user_id: int,
@@ -391,10 +609,11 @@ async def delete_user(
     try:
         # 토큰 검증 및 권한 확인
         payload = jwt_service.verify_access_token(credentials.credentials)
-        if payload['role'] != 'system':
+        # admin role도 사용자 삭제 가능하도록 수정
+        if payload['role'] not in ['system', 'admin']:
             raise HTTPException(
                 status_code=status.HTTP_403_FORBIDDEN,
-                detail="사용자 삭제는 시스템 관리자만 가능합니다"
+                detail="사용자 삭제는 관리자만 가능합니다"
             )
         
         # 자기 자신 삭제 방지
@@ -404,7 +623,30 @@ async def delete_user(
                 detail="자기 자신은 삭제할 수 없습니다"
             )
         
-        # 사용자 조회 및 삭제
+        # BOM 데이터 존재 여부 확인
+        from sqlalchemy import text
+        
+        # files 테이블에서 uploaded_by가 이 사용자인 레코드 확인
+        check_files = text("""
+            SELECT COUNT(*) as count
+            FROM files
+            WHERE uploaded_by = :user_id
+        """)
+        files_result = db.execute(check_files, {"user_id": user_id}).fetchone()
+        has_files = files_result.count > 0 if files_result else False
+        
+        # user_requirements 테이블 확인
+        check_requirements = text("""
+            SELECT COUNT(*) as count
+            FROM user_requirements
+            WHERE created_by = :user_id
+        """)
+        requirements_result = db.execute(check_requirements, {"user_id": user_id}).fetchone()
+        has_requirements = requirements_result.count > 0 if requirements_result else False
+        
+        has_bom_data = has_files or has_requirements
+        
+        # 사용자 조회
         user_repo = UserRepository(db)
         user = user_repo.find_by_id(user_id)
         
@@ -414,15 +656,39 @@ async def delete_user(
                 detail="해당 사용자를 찾을 수 없습니다"
             )
         
-        user_repo.delete_user(user)
-        
-        logger.info(f"User deleted by admin: {user.username} (deleted by: {payload['username']})")
-        
-        return {
-            'success': True,
-            'message': '사용자가 삭제되었습니다',
-            'deleted_user_id': user_id
-        }
+        if has_bom_data:
+            # BOM 데이터가 있으면 소프트 삭제 (status='deleted')
+            soft_delete = text("""
+                UPDATE users 
+                SET status = 'deleted',
+                    is_active = FALSE,
+                    updated_at = CURRENT_TIMESTAMP
+                WHERE user_id = :user_id
+                RETURNING username, name
+            """)
+            result = db.execute(soft_delete, {"user_id": user_id}).fetchone()
+            db.commit()
+            
+            logger.info(f"User soft-deleted (has BOM data): {result.username} (deleted by: {payload['username']})")
+            
+            return {
+                'success': True,
+                'message': f'{result.name} 사용자가 비활성화되었습니다 (BOM 데이터 보존)',
+                'soft_deleted': True,
+                'deleted_user_id': user_id
+            }
+        else:
+            # BOM 데이터가 없으면 완전 삭제
+            user_repo.delete_user(user)
+            
+            logger.info(f"User hard-deleted (no BOM data): {user.username} (deleted by: {payload['username']})")
+            
+            return {
+                'success': True,
+                'message': '사용자가 완전히 삭제되었습니다',
+                'soft_deleted': False,
+                'deleted_user_id': user_id
+            }
         
     except HTTPException:
         raise

backend/app/auth/auth_service.py

@@ -62,14 +62,38 @@ class AuthService:
                     message="아이디 또는 비밀번호가 올바르지 않습니다"
                 )
             
-            # 계정 활성화 상태 확인
-            if not user.is_active:
-                await self._record_login_failure(user.user_id, ip_address, user_agent, 'account_disabled')
-                logger.warning(f"Login failed - account disabled: {username}")
-                raise TKMPException(
-                    status_code=status.HTTP_403_FORBIDDEN,
-                    message="비활성화된 계정입니다. 관리자에게 문의하세요"
-                )
+            # 계정 상태 확인 (새로운 status 체계)
+            if hasattr(user, 'status'):
+                if user.status == 'pending':
+                    await self._record_login_failure(user.user_id, ip_address, user_agent, 'pending_account')
+                    logger.warning(f"Login failed - pending account: {username}")
+                    raise TKMPException(
+                        status_code=status.HTTP_403_FORBIDDEN,
+                        message="계정 승인 대기 중입니다. 관리자 승인 후 이용 가능합니다"
+                    )
+                elif user.status == 'suspended':
+                    await self._record_login_failure(user.user_id, ip_address, user_agent, 'suspended_account')
+                    logger.warning(f"Login failed - suspended account: {username}")
+                    raise TKMPException(
+                        status_code=status.HTTP_403_FORBIDDEN,
+                        message="계정이 정지되었습니다. 관리자에게 문의하세요"
+                    )
+                elif user.status == 'deleted':
+                    await self._record_login_failure(user.user_id, ip_address, user_agent, 'deleted_account')
+                    logger.warning(f"Login failed - deleted account: {username}")
+                    raise TKMPException(
+                        status_code=status.HTTP_403_FORBIDDEN,
+                        message="삭제된 계정입니다"
+                    )
+            else:
+                # 하위 호환성: status 필드가 없으면 is_active 사용
+                if not user.is_active:
+                    await self._record_login_failure(user.user_id, ip_address, user_agent, 'account_disabled')
+                    logger.warning(f"Login failed - account disabled: {username}")
+                    raise TKMPException(
+                        status_code=status.HTTP_403_FORBIDDEN,
+                        message="비활성화된 계정입니다. 관리자에게 문의하세요"
+                    )
             
             # 계정 잠금 상태 확인
             if user.is_locked():

backend/app/auth/models.py

@@ -32,7 +32,8 @@ class User(Base):
     access_level = Column(String(20), default='worker', nullable=False)  # 호환성 유지
     
     # 계정 상태 관리
-    is_active = Column(Boolean, default=True, nullable=False)
+    is_active = Column(Boolean, default=True, nullable=False)  # DEPRECATED: Use status instead
+    status = Column(String(20), default='active', nullable=False)  # pending, active, suspended, deleted
     failed_login_attempts = Column(Integer, default=0)
     locked_until = Column(DateTime, nullable=True)
     
@@ -302,9 +303,15 @@ class UserRepository:
             raise
     
     def get_all_users(self, skip: int = 0, limit: int = 100) -> List[User]:
-        """모든 사용자 조회"""
+        """활성 사용자만 조회 (status='active')"""
         try:
-            return self.db.query(User).offset(skip).limit(limit).all()
+            # status 필드가 있으면 status='active', 없으면 is_active=True (하위 호환성)
+            users = self.db.query(User)
+            if hasattr(User, 'status'):
+                users = users.filter(User.status == 'active')
+            else:
+                users = users.filter(User.is_active == True)
+            return users.offset(skip).limit(limit).all()
         except Exception as e:
             logger.error(f"Failed to get all users: {str(e)}")
             return []

backend/app/auth/signup_routes.py

@@ -83,7 +83,8 @@ async def signup_request(
             'position': signup_data.position,
             'phone': signup_data.phone,
             'role': 'user',
-            'is_active': False  # 비활성 상태로 승인 대기 표시
+            'is_active': False,  # 하위 호환성
+            'status': 'pending'  # 새로운 status 체계: 승인 대기
         })
         
         # 가입 사유 저장 (notes 컬럼 활용)
@@ -130,13 +131,13 @@ async def get_signup_requests(
                 detail="관리자만 접근 가능합니다"
             )
         
-        # 승인 대기 중인 사용자 조회 (is_active=False인 사용자)
+        # 승인 대기 중인 사용자 조회 (status='pending'인 사용자)
         query = text("""
             SELECT 
-                user_id as id, username, name, email, department, position, 
-                phone, notes, created_at
+                user_id, username, name, email, department, position, 
+                phone, created_at, role, is_active, status
             FROM users
-            WHERE is_active = FALSE
+            WHERE status = 'pending'
             ORDER BY created_at DESC
         """)
         
@@ -145,15 +146,18 @@ async def get_signup_requests(
         pending_users = []
         for row in results:
             pending_users.append({
-                "id": row.id,
+                "user_id": row.user_id,
+                "id": row.user_id,  # 호환성을 위해 둘 다 제공
                 "username": row.username,
                 "name": row.name,
                 "email": row.email,
                 "department": row.department,
                 "position": row.position,
                 "phone": row.phone,
-                "reason": row.notes,
-                "requested_at": row.created_at.isoformat() if row.created_at else None
+                "role": row.role,
+                "created_at": row.created_at.isoformat() if row.created_at else None,
+                "requested_at": row.created_at.isoformat() if row.created_at else None,
+                "is_active": row.is_active
             })
         
         return {
@@ -172,6 +176,39 @@ async def get_signup_requests(
         )
 
 
+@router.get("/pending-signups/count")
+async def get_pending_signups_count(
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    승인 대기 중인 회원가입 수 조회 (관리자 전용)
+    
+    Returns:
+        dict: 승인 대기 중인 사용자 수
+    """
+    try:
+        # 관리자 권한 확인
+        if current_user.get('role') not in ['admin', 'system']:
+            return {"count": 0}  # 관리자가 아니면 0 반환
+        
+        # 승인 대기 중인 사용자 수 조회
+        query = text("""
+            SELECT COUNT(*) as count
+            FROM users
+            WHERE status = 'pending'
+        """)
+        
+        result = db.execute(query).fetchone()
+        count = result.count if result else 0
+        
+        return {"count": count}
+        
+    except Exception as e:
+        logger.error(f"승인 대기 회원가입 수 조회 실패: {str(e)}")
+        return {"count": 0}  # 오류 시 0 반환
+
+
 @router.post("/approve-signup/{user_id}")
 async def approve_signup(
     user_id: int,
@@ -201,9 +238,10 @@ async def approve_signup(
         update_query = text("""
             UPDATE users
             SET is_active = TRUE,
+                status = 'active',
                 access_level = :access_level,
                 updated_at = CURRENT_TIMESTAMP
-            WHERE user_id = :user_id AND is_active = FALSE
+            WHERE user_id = :user_id AND status = 'pending'
             RETURNING user_id as id, username, name
         """)
         

backend/app/config.py

@@ -43,7 +43,7 @@ class SecuritySettings(BaseSettings):
     """보안 설정"""
     cors_origins: List[str] = Field(default=[], description="CORS 허용 도메인")
     cors_methods: List[str] = Field(
-        default=["GET", "POST", "PUT", "DELETE", "OPTIONS"],
+        default=["GET", "POST", "PUT", "PATCH", "DELETE", "OPTIONS"],
         description="CORS 허용 메서드"
     )
     cors_headers: List[str] = Field(
@@ -147,6 +147,7 @@ class Settings(BaseSettings):
         env_file = ".env"
         env_file_encoding = "utf-8"
         case_sensitive = False
+        extra = "ignore"
         
     def __init__(self, **kwargs):
         super().__init__(**kwargs)

backend/app/database.py

@@ -9,8 +9,16 @@ DATABASE_URL = os.getenv(
     "postgresql://tkmp_user:tkmp_password_2025@postgres:5432/tk_mp_bom"
 )
 
-# SQLAlchemy 엔진 생성
-engine = create_engine(DATABASE_URL)
+# SQLAlchemy 엔진 생성 (UTF-8 인코딩 설정)
+engine = create_engine(
+    DATABASE_URL,
+    connect_args={
+        "client_encoding": "utf8",
+        "options": "-c client_encoding=utf8 -c timezone=UTC"
+    },
+    pool_pre_ping=True,
+    echo=False
+)
 
 # 세션 팩토리 생성
 SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

backend/app/main.py

@@ -91,12 +91,49 @@ try:
 except ImportError:
     logger.warning("dashboard 라우터를 찾을 수 없습니다")
 
+# 리비전 관리 라우터 (임시 비활성화)
+# try:
+#     from .routers import revision_management
+#     app.include_router(revision_management.router, tags=["revision-management"])
+# except ImportError:
+#     logger.warning("revision_management 라우터를 찾을 수 없습니다")
+
 try:
     from .routers import tubing
     app.include_router(tubing.router, prefix="/tubing", tags=["tubing"])
 except ImportError:
     logger.warning("tubing 라우터를 찾을 수 없습니다")
 
+# 구매 추적 라우터
+try:
+    from .routers import purchase_tracking
+    app.include_router(purchase_tracking.router)
+except ImportError:
+    logger.warning("purchase_tracking 라우터를 찾을 수 없습니다")
+
+# 엑셀 내보내기 관리 라우터
+try:
+    from .routers import export_manager
+    app.include_router(export_manager.router)
+except ImportError:
+    logger.warning("export_manager 라우터를 찾을 수 없습니다")
+
+# 구매신청 관리 라우터
+try:
+    from .routers import purchase_request
+    app.include_router(purchase_request.router)
+    logger.info("purchase_request 라우터 등록 완료")
+except ImportError as e:
+    logger.warning(f"purchase_request 라우터를 찾을 수 없습니다: {e}")
+
+# 자재 관리 라우터
+try:
+    from .routers import materials
+    app.include_router(materials.router)
+    logger.info("materials 라우터 등록 완료")
+except ImportError as e:
+    logger.warning(f"materials 라우터를 찾을 수 없습니다: {e}")
+
 # 파일 관리 API 라우터 등록 (비활성화 - files 라우터와 충돌 방지)
 # try:
 #     from .api import file_management
@@ -204,6 +241,14 @@ async def root():
 #         print(f"Jobs 조회 에러: {str(e)}")
 #         return {"error": f"Jobs 조회 실패: {str(e)}"}
 
+# 리비전 관리 라우터
+try:
+    from .routers import revision_management
+    app.include_router(revision_management.router)
+    logger.info("revision_management 라우터 등록 완료")
+except ImportError as e:
+    logger.warning(f"revision_management 라우터를 찾을 수 없습니다: {e}")
+
 # 파일 업로드는 /files/upload 엔드포인트를 사용하세요 (routers/files.py)
 
 # parse_file과 classify_material_item 함수는 routers/files.py로 이동되었습니다

backend/app/models.py

@@ -70,6 +70,25 @@ class Material(Base):
     drawing_reference = Column(String(100))
     notes = Column(Text)
     created_at = Column(DateTime, default=datetime.utcnow)
+    is_active = Column(Boolean, default=True)
+    
+    # 추가 필드들
+    main_nom = Column(String(50))
+    red_nom = Column(String(50))
+    purchase_confirmed = Column(Boolean, default=False)
+    purchase_confirmed_at = Column(DateTime)
+    purchase_status = Column(String(20), default='not_purchased')
+    purchase_confirmed_by = Column(String(100))
+    confirmed_quantity = Column(Numeric(10, 3))
+    revision_status = Column(String(20), default='active')
+    material_hash = Column(String(100))
+    normalized_description = Column(Text)
+    full_material_grade = Column(String(100))
+    row_number = Column(Integer)
+    length = Column(Numeric(10, 3))
+    brand = Column(String(100))
+    user_requirement = Column(Text)
+    total_length = Column(Numeric(10, 3))
     
     # 관계 설정
     file = relationship("File", back_populates="materials")

backend/app/routers/dashboard.py

@@ -526,6 +526,7 @@ async def get_projects(
             projects.append({
                 "id": row.id,
                 "official_project_code": row.official_project_code,
+                "job_no": row.official_project_code,  # job_no 필드 추가 (프론트엔드 호환성)
                 "project_name": row.project_name,
                 "job_name": row.project_name,  # 호환성을 위해 추가
                 "client_name": row.client_name,

backend/app/routers/export_manager.py

@@ -0,0 +1,591 @@
+"""
+엑셀 내보내기 및 구매 배치 관리 API
+"""
+from fastapi import APIRouter, Depends, HTTPException, status, Response
+from fastapi.responses import FileResponse
+from sqlalchemy import text
+from sqlalchemy.orm import Session
+from typing import Optional, List, Dict, Any
+from datetime import datetime
+import json
+import os
+import openpyxl
+from openpyxl.styles import Font, PatternFill, Alignment, Border, Side
+from openpyxl.utils import get_column_letter
+import uuid
+
+from ..database import get_db
+from ..auth.jwt_service import get_current_user
+from ..utils.logger import logger
+
+router = APIRouter(prefix="/export", tags=["Export Management"])
+
+# 엑셀 파일 저장 경로
+EXPORT_DIR = "exports"
+os.makedirs(EXPORT_DIR, exist_ok=True)
+
+
+def create_excel_from_materials(materials: List[Dict], batch_info: Dict) -> str:
+    """
+    자재 목록으로 엑셀 파일 생성
+    """
+    wb = openpyxl.Workbook()
+    ws = wb.active
+    ws.title = batch_info.get("category", "자재목록")
+    
+    # 헤더 스타일
+    header_fill = PatternFill(start_color="B8E6FF", end_color="B8E6FF", fill_type="solid")
+    header_font = Font(bold=True, size=11)
+    header_alignment = Alignment(horizontal="center", vertical="center")
+    thin_border = Border(
+        left=Side(style='thin'),
+        right=Side(style='thin'),
+        top=Side(style='thin'),
+        bottom=Side(style='thin')
+    )
+    
+    # 배치 정보 추가 (상단 3줄)
+    ws.merge_cells('A1:J1')
+    ws['A1'] = f"구매 배치: {batch_info.get('batch_no', 'N/A')}"
+    ws['A1'].font = Font(bold=True, size=14)
+    
+    ws.merge_cells('A2:J2')
+    ws['A2'] = f"프로젝트: {batch_info.get('job_no', '')} - {batch_info.get('job_name', '')}"
+    
+    ws.merge_cells('A3:J3')
+    ws['A3'] = f"내보낸 날짜: {batch_info.get('export_date', datetime.now().strftime('%Y-%m-%d %H:%M'))}"
+    
+    # 빈 줄
+    ws.append([])
+    
+    # 헤더 행
+    headers = [
+        "No.", "카테고리", "자재 설명", "크기", "스케줄/등급", 
+        "재질", "수량", "단위", "추가요구", "사용자요구",
+        "구매상태", "PR번호", "PO번호", "공급업체", "예정일"
+    ]
+    
+    for col, header in enumerate(headers, 1):
+        cell = ws.cell(row=5, column=col, value=header)
+        cell.fill = header_fill
+        cell.font = header_font
+        cell.alignment = header_alignment
+        cell.border = thin_border
+    
+    # 데이터 행
+    row_num = 6
+    for idx, material in enumerate(materials, 1):
+        row_data = [
+            idx,
+            material.get("category", ""),
+            material.get("description", ""),
+            material.get("size", ""),
+            material.get("schedule", ""),
+            material.get("material_grade", ""),
+            material.get("quantity", ""),
+            material.get("unit", ""),
+            material.get("additional_req", ""),
+            material.get("user_requirement", ""),
+            material.get("purchase_status", "pending"),
+            material.get("purchase_request_no", ""),
+            material.get("purchase_order_no", ""),
+            material.get("vendor_name", ""),
+            material.get("expected_date", "")
+        ]
+        
+        for col, value in enumerate(row_data, 1):
+            cell = ws.cell(row=row_num, column=col, value=value)
+            cell.border = thin_border
+            if col == 11:  # 구매상태 컬럼
+                if value == "pending":
+                    cell.fill = PatternFill(start_color="FFFFE0", end_color="FFFFE0", fill_type="solid")
+                elif value == "requested":
+                    cell.fill = PatternFill(start_color="FFE4B5", end_color="FFE4B5", fill_type="solid")
+                elif value == "ordered":
+                    cell.fill = PatternFill(start_color="ADD8E6", end_color="ADD8E6", fill_type="solid")
+                elif value == "received":
+                    cell.fill = PatternFill(start_color="90EE90", end_color="90EE90", fill_type="solid")
+        
+        row_num += 1
+    
+    # 열 너비 자동 조정
+    for column in ws.columns:
+        max_length = 0
+        column_letter = get_column_letter(column[0].column)
+        for cell in column:
+            try:
+                if len(str(cell.value)) > max_length:
+                    max_length = len(str(cell.value))
+            except:
+                pass
+        adjusted_width = min(max_length + 2, 50)
+        ws.column_dimensions[column_letter].width = adjusted_width
+    
+    # 파일 저장
+    file_name = f"batch_{batch_info.get('batch_no', uuid.uuid4().hex[:8])}_{datetime.now().strftime('%Y%m%d_%H%M%S')}.xlsx"
+    file_path = os.path.join(EXPORT_DIR, file_name)
+    wb.save(file_path)
+    
+    return file_name
+
+
+@router.post("/create-batch")
+async def create_export_batch(
+    file_id: int,
+    job_no: Optional[str] = None,
+    category: Optional[str] = None,
+    materials: List[Dict] = [],
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    엑셀 내보내기 배치 생성 (자재 그룹화)
+    """
+    try:
+        # 배치 번호 생성 (YYYYMMDD-XXX 형식)
+        batch_date = datetime.now().strftime('%Y%m%d')
+        
+        # 오늘 생성된 배치 수 확인
+        count_query = text("""
+            SELECT COUNT(*) as count
+            FROM excel_export_history
+            WHERE DATE(export_date) = CURRENT_DATE
+        """)
+        count_result = db.execute(count_query).fetchone()
+        batch_seq = (count_result.count + 1) if count_result else 1
+        batch_no = f"{batch_date}-{str(batch_seq).zfill(3)}"
+        
+        # Job 정보 조회
+        job_name = ""
+        if job_no:
+            job_query = text("SELECT job_name FROM jobs WHERE job_no = :job_no")
+            job_result = db.execute(job_query, {"job_no": job_no}).fetchone()
+            if job_result:
+                job_name = job_result.job_name
+        
+        # 배치 정보
+        batch_info = {
+            "batch_no": batch_no,
+            "job_no": job_no,
+            "job_name": job_name,
+            "category": category,
+            "export_date": datetime.now().strftime('%Y-%m-%d %H:%M')
+        }
+        
+        # 엑셀 파일 생성
+        excel_file_name = create_excel_from_materials(materials, batch_info)
+        
+        # 내보내기 이력 저장
+        insert_history = text("""
+            INSERT INTO excel_export_history (
+                file_id, job_no, exported_by, export_type, 
+                category, material_count, file_name, notes
+            ) VALUES (
+                :file_id, :job_no, :exported_by, :export_type,
+                :category, :material_count, :file_name, :notes
+            ) RETURNING export_id
+        """)
+        
+        result = db.execute(insert_history, {
+            "file_id": file_id,
+            "job_no": job_no,
+            "exported_by": current_user.get("user_id"),
+            "export_type": "batch",
+            "category": category,
+            "material_count": len(materials),
+            "file_name": excel_file_name,
+            "notes": f"배치번호: {batch_no}"
+        })
+        
+        export_id = result.fetchone().export_id
+        
+        # 자재별 내보내기 기록
+        material_ids = []
+        for material in materials:
+            material_id = material.get("id")
+            if material_id:
+                material_ids.append(material_id)
+                
+                insert_material = text("""
+                    INSERT INTO exported_materials (
+                        export_id, material_id, purchase_status,
+                        quantity_exported
+                    ) VALUES (
+                        :export_id, :material_id, 'pending',
+                        :quantity
+                    )
+                """)
+                
+                db.execute(insert_material, {
+                    "export_id": export_id,
+                    "material_id": material_id,
+                    "quantity": material.get("quantity", 0)
+                })
+        
+        db.commit()
+        
+        logger.info(f"Export batch created: {batch_no} with {len(materials)} materials")
+        
+        return {
+            "success": True,
+            "batch_no": batch_no,
+            "export_id": export_id,
+            "file_name": excel_file_name,
+            "material_count": len(materials),
+            "message": f"배치 {batch_no}가 생성되었습니다"
+        }
+        
+    except Exception as e:
+        db.rollback()
+        logger.error(f"Failed to create export batch: {str(e)}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"배치 생성 실패: {str(e)}"
+        )
+
+
+@router.get("/batches")
+async def get_export_batches(
+    file_id: Optional[int] = None,
+    job_no: Optional[str] = None,
+    status: Optional[str] = None,
+    limit: int = 50,
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    내보내기 배치 목록 조회
+    """
+    try:
+        query = text("""
+            SELECT 
+                eeh.export_id,
+                eeh.file_id,
+                eeh.job_no,
+                eeh.export_date,
+                eeh.category,
+                eeh.material_count,
+                eeh.file_name,
+                eeh.notes,
+                u.name as exported_by,
+                j.job_name,
+                f.original_filename,
+                -- 상태별 집계
+                COUNT(DISTINCT em.material_id) as total_materials,
+                COUNT(DISTINCT CASE WHEN em.purchase_status = 'pending' THEN em.material_id END) as pending_count,
+                COUNT(DISTINCT CASE WHEN em.purchase_status = 'requested' THEN em.material_id END) as requested_count,
+                COUNT(DISTINCT CASE WHEN em.purchase_status = 'ordered' THEN em.material_id END) as ordered_count,
+                COUNT(DISTINCT CASE WHEN em.purchase_status = 'received' THEN em.material_id END) as received_count,
+                -- 전체 상태 계산
+                CASE 
+                    WHEN COUNT(DISTINCT em.material_id) = COUNT(DISTINCT CASE WHEN em.purchase_status = 'received' THEN em.material_id END) 
+                        THEN 'completed'
+                    WHEN COUNT(DISTINCT CASE WHEN em.purchase_status = 'ordered' THEN em.material_id END) > 0 
+                        THEN 'in_progress'
+                    WHEN COUNT(DISTINCT CASE WHEN em.purchase_status = 'requested' THEN em.material_id END) > 0 
+                        THEN 'requested'
+                    ELSE 'pending'
+                END as batch_status
+            FROM excel_export_history eeh
+            LEFT JOIN users u ON eeh.exported_by = u.user_id
+            LEFT JOIN jobs j ON eeh.job_no = j.job_no
+            LEFT JOIN files f ON eeh.file_id = f.id
+            LEFT JOIN exported_materials em ON eeh.export_id = em.export_id
+            WHERE eeh.export_type = 'batch'
+                AND (:file_id IS NULL OR eeh.file_id = :file_id)
+                AND (:job_no IS NULL OR eeh.job_no = :job_no)
+            GROUP BY 
+                eeh.export_id, eeh.file_id, eeh.job_no, eeh.export_date,
+                eeh.category, eeh.material_count, eeh.file_name, eeh.notes,
+                u.name, j.job_name, f.original_filename
+            HAVING (:status IS NULL OR 
+                CASE 
+                    WHEN COUNT(DISTINCT em.material_id) = COUNT(DISTINCT CASE WHEN em.purchase_status = 'received' THEN em.material_id END) 
+                        THEN 'completed'
+                    WHEN COUNT(DISTINCT CASE WHEN em.purchase_status = 'ordered' THEN em.material_id END) > 0 
+                        THEN 'in_progress'
+                    WHEN COUNT(DISTINCT CASE WHEN em.purchase_status = 'requested' THEN em.material_id END) > 0 
+                        THEN 'requested'
+                    ELSE 'pending'
+                END = :status)
+            ORDER BY eeh.export_date DESC
+            LIMIT :limit
+        """)
+        
+        results = db.execute(query, {
+            "file_id": file_id,
+            "job_no": job_no,
+            "status": status,
+            "limit": limit
+        }).fetchall()
+        
+        batches = []
+        for row in results:
+            # 배치 번호 추출 (notes에서)
+            batch_no = ""
+            if row.notes and "배치번호:" in row.notes:
+                batch_no = row.notes.split("배치번호:")[1].strip()
+            
+            batches.append({
+                "export_id": row.export_id,
+                "batch_no": batch_no,
+                "file_id": row.file_id,
+                "job_no": row.job_no,
+                "job_name": row.job_name,
+                "export_date": row.export_date.isoformat() if row.export_date else None,
+                "category": row.category,
+                "material_count": row.total_materials,
+                "file_name": row.file_name,
+                "exported_by": row.exported_by,
+                "source_file": row.original_filename,
+                "batch_status": row.batch_status,
+                "status_detail": {
+                    "pending": row.pending_count,
+                    "requested": row.requested_count,
+                    "ordered": row.ordered_count,
+                    "received": row.received_count,
+                    "total": row.total_materials
+                }
+            })
+        
+        return {
+            "success": True,
+            "batches": batches,
+            "count": len(batches)
+        }
+        
+    except Exception as e:
+        logger.error(f"Failed to get export batches: {str(e)}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"배치 목록 조회 실패: {str(e)}"
+        )
+
+
+@router.get("/batch/{export_id}/materials")
+async def get_batch_materials(
+    export_id: int,
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    배치에 포함된 자재 목록 조회
+    """
+    try:
+        query = text("""
+            SELECT 
+                em.id as exported_material_id,
+                em.material_id,
+                m.original_description,
+                m.classified_category,
+                m.size_inch,
+                m.schedule,
+                m.material_grade,
+                m.quantity,
+                m.unit,
+                em.purchase_status,
+                em.purchase_request_no,
+                em.purchase_order_no,
+                em.vendor_name,
+                em.expected_date,
+                em.quantity_ordered,
+                em.quantity_received,
+                em.unit_price,
+                em.total_price,
+                em.notes,
+                ur.requirement as user_requirement
+            FROM exported_materials em
+            JOIN materials m ON em.material_id = m.id
+            LEFT JOIN user_requirements ur ON m.id = ur.material_id
+            WHERE em.export_id = :export_id
+            ORDER BY m.classified_category, m.original_description
+        """)
+        
+        results = db.execute(query, {"export_id": export_id}).fetchall()
+        
+        materials = []
+        for row in results:
+            materials.append({
+                "exported_material_id": row.exported_material_id,
+                "material_id": row.material_id,
+                "description": row.original_description,
+                "category": row.classified_category,
+                "size": row.size_inch,
+                "schedule": row.schedule,
+                "material_grade": row.material_grade,
+                "quantity": row.quantity,
+                "unit": row.unit,
+                "user_requirement": row.user_requirement,
+                "purchase_status": row.purchase_status,
+                "purchase_request_no": row.purchase_request_no,
+                "purchase_order_no": row.purchase_order_no,
+                "vendor_name": row.vendor_name,
+                "expected_date": row.expected_date.isoformat() if row.expected_date else None,
+                "quantity_ordered": row.quantity_ordered,
+                "quantity_received": row.quantity_received,
+                "unit_price": float(row.unit_price) if row.unit_price else None,
+                "total_price": float(row.total_price) if row.total_price else None,
+                "notes": row.notes
+            })
+        
+        return {
+            "success": True,
+            "materials": materials,
+            "count": len(materials)
+        }
+        
+    except Exception as e:
+        logger.error(f"Failed to get batch materials: {str(e)}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"배치 자재 조회 실패: {str(e)}"
+        )
+
+
+@router.get("/batch/{export_id}/download")
+async def download_batch_excel(
+    export_id: int,
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    저장된 배치 엑셀 파일 다운로드
+    """
+    try:
+        # 배치 정보 조회
+        query = text("""
+            SELECT file_name, notes
+            FROM excel_export_history
+            WHERE export_id = :export_id
+        """)
+        result = db.execute(query, {"export_id": export_id}).fetchone()
+        
+        if not result:
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail="배치를 찾을 수 없습니다"
+            )
+        
+        file_path = os.path.join(EXPORT_DIR, result.file_name)
+        
+        if not os.path.exists(file_path):
+            # 파일이 없으면 재생성
+            materials = await get_batch_materials(export_id, current_user, db)
+            
+            batch_no = ""
+            if result.notes and "배치번호:" in result.notes:
+                batch_no = result.notes.split("배치번호:")[1].strip()
+            
+            batch_info = {
+                "batch_no": batch_no,
+                "export_date": datetime.now().strftime('%Y-%m-%d %H:%M')
+            }
+            
+            file_name = create_excel_from_materials(materials["materials"], batch_info)
+            file_path = os.path.join(EXPORT_DIR, file_name)
+            
+            # DB 업데이트
+            update_query = text("""
+                UPDATE excel_export_history
+                SET file_name = :file_name
+                WHERE export_id = :export_id
+            """)
+            db.execute(update_query, {
+                "file_name": file_name,
+                "export_id": export_id
+            })
+            db.commit()
+        
+        return FileResponse(
+            path=file_path,
+            filename=result.file_name,
+            media_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
+        )
+        
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f"Failed to download batch excel: {str(e)}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"엑셀 다운로드 실패: {str(e)}"
+        )
+
+
+@router.patch("/batch/{export_id}/status")
+async def update_batch_status(
+    export_id: int,
+    status: str,
+    purchase_request_no: Optional[str] = None,
+    purchase_order_no: Optional[str] = None,
+    vendor_name: Optional[str] = None,
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    배치 전체 상태 일괄 업데이트
+    """
+    try:
+        # 배치의 모든 자재 상태 업데이트
+        update_query = text("""
+            UPDATE exported_materials
+            SET 
+                purchase_status = :status,
+                purchase_request_no = COALESCE(:pr_no, purchase_request_no),
+                purchase_order_no = COALESCE(:po_no, purchase_order_no),
+                vendor_name = COALESCE(:vendor, vendor_name),
+                updated_by = :updated_by,
+                requested_date = CASE WHEN :status = 'requested' THEN CURRENT_TIMESTAMP ELSE requested_date END,
+                ordered_date = CASE WHEN :status = 'ordered' THEN CURRENT_TIMESTAMP ELSE ordered_date END,
+                received_date = CASE WHEN :status = 'received' THEN CURRENT_TIMESTAMP ELSE received_date END
+            WHERE export_id = :export_id
+        """)
+        
+        result = db.execute(update_query, {
+            "export_id": export_id,
+            "status": status,
+            "pr_no": purchase_request_no,
+            "po_no": purchase_order_no,
+            "vendor": vendor_name,
+            "updated_by": current_user.get("user_id")
+        })
+        
+        # 이력 기록
+        history_query = text("""
+            INSERT INTO purchase_status_history (
+                exported_material_id, material_id, 
+                previous_status, new_status, 
+                changed_by, reason
+            )
+            SELECT 
+                em.id, em.material_id,
+                em.purchase_status, :new_status,
+                :changed_by, :reason
+            FROM exported_materials em
+            WHERE em.export_id = :export_id
+        """)
+        
+        db.execute(history_query, {
+            "export_id": export_id,
+            "new_status": status,
+            "changed_by": current_user.get("user_id"),
+            "reason": f"배치 일괄 업데이트"
+        })
+        
+        db.commit()
+        
+        logger.info(f"Batch {export_id} status updated to {status}")
+        
+        return {
+            "success": True,
+            "message": f"배치의 모든 자재가 {status} 상태로 변경되었습니다",
+            "updated_count": result.rowcount
+        }
+        
+    except Exception as e:
+        db.rollback()
+        logger.error(f"Failed to update batch status: {str(e)}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"배치 상태 업데이트 실패: {str(e)}"
+        )

backend/app/routers/materials.py

@@ -0,0 +1,161 @@
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+from sqlalchemy import text
+from pydantic import BaseModel
+from ..database import get_db
+from ..auth.middleware import get_current_user
+
+router = APIRouter(prefix="/materials", tags=["materials"])
+
+class BrandUpdate(BaseModel):
+    brand: str
+
+class UserRequirementUpdate(BaseModel):
+    user_requirement: str
+
+@router.patch("/{material_id}/brand")
+async def update_material_brand(
+    material_id: int,
+    brand_data: BrandUpdate,
+    db: Session = Depends(get_db),
+    current_user: dict = Depends(get_current_user)
+):
+    """자재의 브랜드 정보를 업데이트합니다."""
+    try:
+        # 자재 존재 여부 확인
+        result = db.execute(
+            text("SELECT id FROM materials WHERE id = :material_id"),
+            {"material_id": material_id}
+        )
+        material = result.fetchone()
+        
+        if not material:
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail="자재를 찾을 수 없습니다."
+            )
+        
+        # 브랜드 업데이트
+        db.execute(
+            text("""
+                UPDATE materials 
+                SET brand = :brand, 
+                    updated_by = :updated_by
+                WHERE id = :material_id
+            """),
+            {
+                "brand": brand_data.brand.strip(),
+                "updated_by": current_user.get("username", "unknown"),
+                "material_id": material_id
+            }
+        )
+        
+        db.commit()
+        
+        return {
+            "success": True,
+            "message": "브랜드가 성공적으로 업데이트되었습니다.",
+            "material_id": material_id,
+            "brand": brand_data.brand.strip()
+        }
+        
+    except Exception as e:
+        db.rollback()
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"브랜드 업데이트 실패: {str(e)}"
+        )
+
+@router.patch("/{material_id}/user-requirement")
+async def update_material_user_requirement(
+    material_id: int,
+    requirement_data: UserRequirementUpdate,
+    db: Session = Depends(get_db),
+    current_user: dict = Depends(get_current_user)
+):
+    """자재의 사용자 요구사항을 업데이트합니다."""
+    try:
+        # 자재 존재 여부 확인
+        result = db.execute(
+            text("SELECT id FROM materials WHERE id = :material_id"),
+            {"material_id": material_id}
+        )
+        material = result.fetchone()
+        
+        if not material:
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail="자재를 찾을 수 없습니다."
+            )
+        
+        # 사용자 요구사항 업데이트
+        db.execute(
+            text("""
+                UPDATE materials 
+                SET user_requirement = :user_requirement, 
+                    updated_by = :updated_by
+                WHERE id = :material_id
+            """),
+            {
+                "user_requirement": requirement_data.user_requirement.strip(),
+                "updated_by": current_user.get("username", "unknown"),
+                "material_id": material_id
+            }
+        )
+        
+        db.commit()
+        
+        return {
+            "success": True,
+            "message": "사용자 요구사항이 성공적으로 업데이트되었습니다.",
+            "material_id": material_id,
+            "user_requirement": requirement_data.user_requirement.strip()
+        }
+        
+    except Exception as e:
+        db.rollback()
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"사용자 요구사항 업데이트 실패: {str(e)}"
+        )
+
+@router.get("/{material_id}")
+async def get_material(
+    material_id: int,
+    db: Session = Depends(get_db),
+    current_user: dict = Depends(get_current_user)
+):
+    """자재 정보를 조회합니다."""
+    try:
+        result = db.execute(
+            text("""
+                SELECT id, original_description, classified_category, 
+                       brand, user_requirement, created_at, updated_by
+                FROM materials 
+                WHERE id = :material_id
+            """),
+            {"material_id": material_id}
+        )
+        material = result.fetchone()
+        
+        if not material:
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail="자재를 찾을 수 없습니다."
+            )
+        
+        return {
+            "id": material.id,
+            "original_description": material.original_description,
+            "classified_category": material.classified_category,
+            "brand": material.brand,
+            "user_requirement": material.user_requirement,
+            "created_at": material.created_at,
+            "updated_by": material.updated_by
+        }
+        
+    except Exception as e:
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"자재 조회 실패: {str(e)}"
+        )

backend/app/routers/purchase_request.py

@@ -0,0 +1,834 @@
+"""
+구매신청 관리 API
+"""
+from fastapi import APIRouter, Depends, HTTPException, status, Body, File, UploadFile, Form
+from fastapi.responses import FileResponse
+from pydantic import BaseModel
+from sqlalchemy import text
+from sqlalchemy.orm import Session
+from typing import Optional, List, Dict
+from datetime import datetime
+from pathlib import Path
+import os
+import json
+
+from ..database import get_db
+from ..auth.middleware import get_current_user
+from ..utils.logger import get_logger
+
+logger = get_logger(__name__)
+
+router = APIRouter(prefix="/purchase-request", tags=["Purchase Request"])
+
+# 엑셀 파일 저장 경로
+EXCEL_DIR = "uploads/excel_exports"
+os.makedirs(EXCEL_DIR, exist_ok=True)
+
+class PurchaseRequestCreate(BaseModel):
+    file_id: int
+    job_no: Optional[str] = None
+    category: Optional[str] = None
+    material_ids: List[int] = []
+    materials_data: List[Dict] = []
+    grouped_materials: Optional[List[Dict]] = []  # 그룹화된 자재 정보
+
+@router.post("/create")
+async def create_purchase_request(
+    request_data: PurchaseRequestCreate,
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    구매신청 생성 (엑셀 내보내기 = 구매신청)
+    """
+    try:
+        # 🔍 디버깅: 요청 데이터 로깅
+        logger.info(f"🔍 구매신청 생성 요청 - file_id: {request_data.file_id}, job_no: {request_data.job_no}")
+        logger.info(f"🔍 material_ids 개수: {len(request_data.material_ids)}")
+        logger.info(f"🔍 materials_data 개수: {len(request_data.materials_data)}")
+        if request_data.material_ids:
+            logger.info(f"🔍 material_ids 샘플: {request_data.material_ids[:5]}")
+        
+        print(f"🔍 [DEBUG] 구매신청 API 호출됨 - material_ids: {len(request_data.material_ids)}개")
+        # 구매신청 번호 생성
+        today = datetime.now().strftime('%Y%m%d')
+        count_query = text("""
+            SELECT COUNT(*) as count
+            FROM purchase_requests
+            WHERE request_no LIKE :pattern
+        """)
+        count = db.execute(count_query, {"pattern": f"PR-{today}%"}).fetchone().count
+        request_no = f"PR-{today}-{str(count + 1).zfill(3)}"
+        
+        # 자재 데이터를 JSON과 엑셀 파일로 저장
+        json_filename = f"{request_no}.json"
+        excel_filename = f"{request_no}.xlsx"
+        json_path = os.path.join(EXCEL_DIR, json_filename)
+        excel_path = os.path.join(EXCEL_DIR, excel_filename)
+        
+        # JSON 저장
+        save_materials_data(
+            request_data.materials_data, 
+            json_path, 
+            request_no, 
+            request_data.job_no,
+            request_data.grouped_materials  # 그룹화 정보 추가
+        )
+        
+        # 엑셀 파일 생성 및 저장
+        create_excel_file(
+            request_data.grouped_materials or request_data.materials_data,
+            excel_path,
+            request_no,
+            request_data.job_no
+        )
+        
+        # 구매신청 레코드 생성
+        insert_request = text("""
+            INSERT INTO purchase_requests (
+                request_no, file_id, job_no, category, 
+                material_count, excel_file_path, requested_by
+            ) VALUES (
+                :request_no, :file_id, :job_no, :category,
+                :material_count, :excel_file_path, :requested_by
+            ) RETURNING request_id
+        """)
+        
+        result = db.execute(insert_request, {
+            "request_no": request_no,
+            "file_id": request_data.file_id,
+            "job_no": request_data.job_no,
+            "category": request_data.category,
+            "material_count": len(request_data.material_ids),
+            "excel_file_path": excel_filename,  # 엑셀 파일명 저장 (JSON 대신)
+            "requested_by": current_user.get("user_id")
+        })
+        request_id = result.fetchone().request_id
+        
+        # 구매신청 자재 상세 저장
+        logger.info(f"Processing {len(request_data.material_ids)} material IDs for purchase request {request_no}")
+        logger.info(f"First 10 Material IDs: {request_data.material_ids[:10]}")  # 처음 10개만 로그
+        logger.info(f"Category: {request_data.category}, Job: {request_data.job_no}")
+        
+        inserted_count = 0
+        for i, material_id in enumerate(request_data.material_ids):
+            material_data = request_data.materials_data[i] if i < len(request_data.materials_data) else {}
+            
+            # 이미 구매신청된 자재인지 확인
+            check_existing = text("""
+                SELECT 1 FROM purchase_request_items 
+                WHERE material_id = :material_id
+            """)
+            existing = db.execute(check_existing, {"material_id": material_id}).fetchone()
+            
+            if not existing:
+                insert_item = text("""
+                    INSERT INTO purchase_request_items (
+                        request_id, material_id, description, category, subcategory, 
+                        material_grade, size_spec, quantity, unit, drawing_name, 
+                        notes, user_requirement
+                    ) VALUES (
+                        :request_id, :material_id, :description, :category, :subcategory,
+                        :material_grade, :size_spec, :quantity, :unit, :drawing_name,
+                        :notes, :user_requirement
+                    )
+                """)
+                # quantity를 정수로 변환 (소수점 제거)
+                quantity_str = str(material_data.get("quantity", 0))
+                try:
+                    quantity = int(float(quantity_str))
+                except (ValueError, TypeError):
+                    quantity = 0
+                    
+                db.execute(insert_item, {
+                    "request_id": request_id,
+                    "material_id": material_id,
+                    "description": material_data.get("description", material_data.get("original_description", "")),
+                    "category": material_data.get("category", material_data.get("classified_category", "")),
+                    "subcategory": material_data.get("subcategory", material_data.get("classified_subcategory", "")),
+                    "material_grade": material_data.get("material_grade", ""),
+                    "size_spec": material_data.get("size_spec", ""),
+                    "quantity": quantity,
+                    "unit": material_data.get("unit", "EA"),
+                    "drawing_name": material_data.get("drawing_name", ""),
+                    "notes": material_data.get("notes", ""),
+                    "user_requirement": material_data.get("user_requirement", "")
+                })
+                inserted_count += 1
+            else:
+                logger.warning(f"Material {material_id} already in another purchase request, skipping")
+        
+        # 🔥 중요: materials 테이블의 purchase_confirmed 업데이트
+        if request_data.material_ids:
+            print(f"🔥 [PURCHASE] purchase_confirmed 업데이트 시작: {len(request_data.material_ids)}개 자재")
+            print(f"🔥 [PURCHASE] material_ids: {request_data.material_ids[:5]}...")  # 처음 5개만 로그
+            
+            update_materials_query = text("""
+                UPDATE materials 
+                SET purchase_confirmed = true,
+                    purchase_confirmed_at = NOW(),
+                    purchase_confirmed_by = :confirmed_by
+                WHERE id = ANY(:material_ids)
+            """)
+            
+            result = db.execute(update_materials_query, {
+                "material_ids": request_data.material_ids,
+                "confirmed_by": current_user.get("username", "system")
+            })
+            
+            print(f"🔥 [PURCHASE] UPDATE 결과: {result.rowcount}개 행 업데이트됨")
+            logger.info(f"✅ {len(request_data.material_ids)}개 자재의 purchase_confirmed를 true로 업데이트")
+        else:
+            print(f"⚠️ [PURCHASE] material_ids가 비어있음!")
+        
+        db.commit()
+        
+        logger.info(f"Purchase request created: {request_no} with {inserted_count} materials (out of {len(request_data.material_ids)} requested)")
+        
+        # 실제 저장된 자재 확인
+        verify_query = text("""
+            SELECT COUNT(*) as count FROM purchase_request_items WHERE request_id = :request_id
+        """)
+        verified_count = db.execute(verify_query, {"request_id": request_id}).fetchone().count
+        logger.info(f"✅ DB 검증: purchase_request_items에 {verified_count}개 저장됨")
+        
+        # purchase_requests 테이블의 total_items 필드 업데이트
+        update_total_items = text("""
+            UPDATE purchase_requests 
+            SET total_items = :total_items 
+            WHERE request_id = :request_id
+        """)
+        db.execute(update_total_items, {
+            "request_id": request_id,
+            "total_items": verified_count
+        })
+        db.commit()
+        
+        logger.info(f"✅ total_items 업데이트 완료: {verified_count}개")
+        
+        return {
+            "success": True,
+            "request_no": request_no,
+            "request_id": request_id,
+            "material_count": len(request_data.material_ids),
+            "inserted_count": inserted_count,
+            "verified_count": verified_count,
+            "message": f"구매신청 {request_no}이 생성되었습니다"
+        }
+        
+    except Exception as e:
+        db.rollback()
+        logger.error(f"Failed to create purchase request: {str(e)}")
+        raise HTTPException(
+            status_code=500,
+            detail=f"구매신청 생성 실패: {str(e)}"
+        )
+
+
+@router.get("/list")
+async def get_purchase_requests(
+    file_id: Optional[int] = None,
+    job_no: Optional[str] = None,
+    status: Optional[str] = None,
+    # current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    구매신청 목록 조회
+    """
+    try:
+        query = text("""
+            SELECT 
+                pr.request_id,
+                pr.request_no,
+                pr.file_id,
+                pr.job_no,
+                pr.total_items,
+                pr.request_date,
+                pr.status,
+                pr.requested_by_username as requested_by,
+                f.original_filename,
+                j.job_name,
+                COUNT(pri.item_id) as item_count
+            FROM purchase_requests pr
+            LEFT JOIN files f ON pr.file_id = f.id
+            LEFT JOIN jobs j ON pr.job_no = j.job_no
+            LEFT JOIN purchase_request_items pri ON pr.request_id = pri.request_id
+            WHERE 1=1
+                AND (:file_id IS NULL OR pr.file_id = :file_id)
+                AND (:job_no IS NULL OR pr.job_no = :job_no)
+                AND (:status IS NULL OR pr.status = :status)
+            GROUP BY 
+                pr.request_id, pr.request_no, pr.file_id, pr.job_no,
+                pr.total_items, pr.request_date, pr.status, 
+                pr.requested_by_username, f.original_filename, j.job_name
+            ORDER BY pr.request_date DESC
+        """)
+        
+        results = db.execute(query, {
+            "file_id": file_id,
+            "job_no": job_no,
+            "status": status
+        }).fetchall()
+        
+        requests = []
+        for row in results:
+            requests.append({
+                "request_id": row.request_id,
+                "request_no": row.request_no,
+                "file_id": row.file_id,
+                "job_no": row.job_no,
+                "job_name": row.job_name,
+                "category": "ALL",  # 기본값
+                "material_count": row.item_count or 0,  # 실제 자재 개수 사용
+                "item_count": row.item_count,
+                "excel_file_path": None,  # 현재 테이블에 없음
+                "requested_at": row.request_date.isoformat() if row.request_date else None,
+                "status": row.status,
+                "requested_by": row.requested_by,
+                "source_file": row.original_filename
+            })
+        
+        return {
+            "success": True,
+            "requests": requests,
+            "count": len(requests)
+        }
+        
+    except Exception as e:
+        logger.error(f"Failed to get purchase requests: {str(e)}")
+        raise HTTPException(
+            status_code=500,
+            detail=f"구매신청 목록 조회 실패: {str(e)}"
+        )
+
+
+@router.get("/{request_id}/materials")
+async def get_request_materials(
+    request_id: int,
+    # current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    구매신청에 포함된 자재 목록 조회 (그룹화 정보 포함)
+    """
+    try:
+        # 구매신청 정보 조회하여 JSON 파일 경로 가져오기
+        info_query = text("""
+            SELECT excel_file_path 
+            FROM purchase_requests 
+            WHERE request_id = :request_id
+        """)
+        info_result = db.execute(info_query, {"request_id": request_id}).fetchone()
+        
+        grouped_materials = []
+        if info_result and info_result.excel_file_path:
+            json_path = os.path.join(EXCEL_DIR, info_result.excel_file_path)
+            if os.path.exists(json_path):
+                try:
+                    with open(json_path, 'r', encoding='utf-8', errors='ignore') as f:
+                        data = json.load(f)
+                        grouped_materials = data.get("grouped_materials", [])
+                except Exception as e:
+                    print(f"⚠️ JSON 파일 읽기 오류 (무시): {e}")
+                    grouped_materials = []
+        
+        # 개별 자재 정보 조회 (기존 코드)
+        query = text("""
+            SELECT 
+                pri.item_id,
+                pri.material_id,
+                pri.quantity as requested_quantity,
+                pri.unit as requested_unit,
+                pri.user_requirement,
+                pri.is_ordered,
+                pri.is_received,
+                m.original_description,
+                m.classified_category,
+                m.size_spec,
+                m.main_nom,
+                m.red_nom,
+                m.schedule,
+                m.material_grade,
+                m.full_material_grade,
+                m.quantity as original_quantity,
+                m.unit as original_unit,
+                m.classification_details,
+                pd.outer_diameter, pd.schedule as pipe_schedule, pd.material_spec, pd.manufacturing_method,
+                pd.end_preparation, pd.length_mm,
+                fd.fitting_type, fd.fitting_subtype, fd.connection_method as fitting_connection,
+                fd.pressure_rating as fitting_pressure, fd.schedule as fitting_schedule,
+                fld.flange_type, fld.facing_type,
+                fld.pressure_rating as flange_pressure,
+                gd.gasket_type, gd.gasket_subtype, gd.material_type as gasket_material,
+                gd.filler_material, gd.pressure_rating as gasket_pressure, gd.thickness as gasket_thickness,
+                bd.bolt_type, bd.material_standard as bolt_material, bd.length as bolt_length
+            FROM purchase_request_items pri
+            JOIN materials m ON pri.material_id = m.id
+            LEFT JOIN pipe_details pd ON m.id = pd.material_id
+            LEFT JOIN fitting_details fd ON m.id = fd.material_id
+            LEFT JOIN flange_details fld ON m.id = fld.material_id
+            LEFT JOIN gasket_details gd ON m.id = gd.material_id
+            LEFT JOIN bolt_details bd ON m.id = bd.material_id
+            WHERE pri.request_id = :request_id
+            ORDER BY m.classified_category, m.original_description
+        """)
+        
+        # 🎯 데이터베이스 쿼리 실행
+        results = db.execute(query, {"request_id": request_id}).fetchall()
+        
+        materials = []
+        
+        # 🎯 안전한 문자열 변환 함수
+        def safe_str(value):
+            if value is None:
+                return ''
+            try:
+                if isinstance(value, bytes):
+                    return value.decode('utf-8', errors='ignore')
+                return str(value)
+            except Exception:
+                return str(value) if value else ''
+        
+        for row in results:
+            try:
+                # quantity를 정수로 변환 (소수점 제거)
+                qty = row.requested_quantity or row.original_quantity
+                try:
+                    qty_int = int(float(qty)) if qty else 0
+                except (ValueError, TypeError):
+                    qty_int = 0
+                
+                # 안전한 문자열 변환
+                original_description = safe_str(row.original_description)
+                size_spec = safe_str(row.size_spec)
+                material_grade = safe_str(row.material_grade)
+                full_material_grade = safe_str(row.full_material_grade)
+                user_requirement = safe_str(row.user_requirement)
+                
+            except Exception as e:
+                # 오류 발생 시 기본값 사용
+                qty_int = 0
+                original_description = ''
+                size_spec = ''
+                material_grade = ''
+                full_material_grade = ''
+                user_requirement = ''
+            
+            # BOM 페이지와 동일한 형식으로 데이터 구성
+            material_dict = {
+                "item_id": row.item_id,
+                "material_id": row.material_id,
+                "id": row.material_id,
+                "original_description": original_description,
+                "classified_category": safe_str(row.classified_category),
+                "size_spec": size_spec,
+                "size_inch": safe_str(row.main_nom),
+                "main_nom": safe_str(row.main_nom),
+                "red_nom": safe_str(row.red_nom),
+                "schedule": safe_str(row.schedule),
+                "material_grade": material_grade,
+                "full_material_grade": full_material_grade,
+                "quantity": qty_int,
+                "unit": safe_str(row.requested_unit or row.original_unit),
+                "user_requirement": user_requirement,
+                "is_ordered": row.is_ordered,
+                "is_received": row.is_received,
+                "classification_details": safe_str(row.classification_details)
+            }
+            
+            # 카테고리별 상세 정보 추가 (안전한 문자열 처리)
+            if row.classified_category == 'PIPE' and row.manufacturing_method:
+                material_dict["pipe_details"] = {
+                    "manufacturing_method": safe_str(row.manufacturing_method),
+                    "schedule": safe_str(row.pipe_schedule),
+                    "material_spec": safe_str(row.material_spec),
+                    "end_preparation": safe_str(row.end_preparation),
+                    "length_mm": row.length_mm
+                }
+            elif row.classified_category == 'FITTING' and row.fitting_type:
+                material_dict["fitting_details"] = {
+                    "fitting_type": safe_str(row.fitting_type),
+                    "fitting_subtype": safe_str(row.fitting_subtype),
+                    "connection_method": safe_str(row.fitting_connection),
+                    "pressure_rating": safe_str(row.fitting_pressure),
+                    "schedule": safe_str(row.fitting_schedule)
+                }
+            elif row.classified_category == 'FLANGE' and row.flange_type:
+                material_dict["flange_details"] = {
+                    "flange_type": safe_str(row.flange_type),
+                    "facing_type": safe_str(row.facing_type),
+                    "pressure_rating": safe_str(row.flange_pressure)
+                }
+            elif row.classified_category == 'GASKET' and row.gasket_type:
+                material_dict["gasket_details"] = {
+                    "gasket_type": safe_str(row.gasket_type),
+                    "gasket_subtype": safe_str(row.gasket_subtype),
+                    "material_type": safe_str(row.gasket_material),
+                    "filler_material": safe_str(row.filler_material),
+                    "pressure_rating": safe_str(row.gasket_pressure),
+                    "thickness": safe_str(row.gasket_thickness)
+                }
+            elif row.classified_category == 'BOLT' and row.bolt_type:
+                material_dict["bolt_details"] = {
+                    "bolt_type": safe_str(row.bolt_type),
+                    "material_standard": safe_str(row.bolt_material),
+                    "length": safe_str(row.bolt_length)
+                }
+            
+            materials.append(material_dict)
+        
+        return {
+            "success": True,
+            "materials": materials,
+            "grouped_materials": grouped_materials,  # 그룹화 정보 추가
+            "count": len(grouped_materials) if grouped_materials else len(materials)
+        }
+        
+    except Exception as e:
+        logger.error(f"Failed to get request materials: {str(e)}")
+        raise HTTPException(
+            status_code=500,
+            detail=f"구매신청 자재 조회 실패: {str(e)}"
+        )
+
+
+@router.get("/requested-materials")
+async def get_requested_material_ids(
+    file_id: Optional[int] = None,
+    job_no: Optional[str] = None,
+    db: Session = Depends(get_db)
+):
+    """
+    구매신청된 자재 ID 목록 조회 (BOM 페이지에서 비활성화용)
+    """
+    try:
+        query = text("""
+            SELECT DISTINCT pri.material_id
+            FROM purchase_request_items pri
+            JOIN purchase_requests pr ON pri.request_id = pr.request_id
+            WHERE 1=1
+                AND (:file_id IS NULL OR pr.file_id = :file_id)
+                AND (:job_no IS NULL OR pr.job_no = :job_no)
+        """)
+        
+        results = db.execute(query, {
+            "file_id": file_id,
+            "job_no": job_no
+        }).fetchall()
+        
+        material_ids = [row.material_id for row in results]
+        
+        return {
+            "success": True,
+            "requested_material_ids": material_ids,
+            "count": len(material_ids)
+        }
+        
+    except Exception as e:
+        logger.error(f"Failed to get requested material IDs: {str(e)}")
+        raise HTTPException(
+            status_code=500,
+            detail=f"구매신청 자재 ID 조회 실패: {str(e)}"
+        )
+
+
+@router.patch("/{request_id}/title")
+async def update_request_title(
+    request_id: int,
+    title: str = Body(..., embed=True),
+    # current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    구매신청 제목(request_no) 업데이트
+    """
+    try:
+        # 구매신청 존재 확인
+        check_query = text("""
+            SELECT request_no FROM purchase_requests
+            WHERE request_id = :request_id
+        """)
+        existing = db.execute(check_query, {"request_id": request_id}).fetchone()
+        
+        if not existing:
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail="구매신청을 찾을 수 없습니다"
+            )
+        
+        # 제목 업데이트
+        update_query = text("""
+            UPDATE purchase_requests
+            SET request_no = :title
+            WHERE request_id = :request_id
+        """)
+        
+        db.execute(update_query, {
+            "request_id": request_id,
+            "title": title
+        })
+        db.commit()
+        
+        return {
+            "success": True,
+            "message": "구매신청 제목이 업데이트되었습니다",
+            "old_title": existing.request_no,
+            "new_title": title
+        }
+        
+    except HTTPException:
+        raise
+    except Exception as e:
+        db.rollback()
+        logger.error(f"Failed to update request title: {str(e)}")
+        raise HTTPException(
+            status_code=500,
+            detail=f"구매신청 제목 업데이트 실패: {str(e)}"
+        )
+
+
+@router.get("/{request_id}/download-excel")
+async def download_request_excel(
+    request_id: int,
+    # current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    구매신청 엑셀 파일 직접 다운로드 (BOM 페이지에서 생성한 파일 그대로)
+    """
+    from fastapi.responses import FileResponse
+    
+    try:
+        # 구매신청 정보 조회
+        query = text("""
+            SELECT request_no, excel_file_path, job_no
+            FROM purchase_requests
+            WHERE request_id = :request_id
+        """)
+        result = db.execute(query, {"request_id": request_id}).fetchone()
+        
+        if not result:
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail="구매신청을 찾을 수 없습니다"
+            )
+        
+        excel_file_path = os.path.join(EXCEL_DIR, result.excel_file_path)
+        
+        if not os.path.exists(excel_file_path):
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail="엑셀 파일을 찾을 수 없습니다"
+            )
+        
+        # 엑셀 파일 직접 다운로드
+        return FileResponse(
+            path=excel_file_path,
+            filename=f"{result.job_no}_{result.request_no}.xlsx",
+            media_type="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
+        )
+        
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f"Failed to download request excel: {str(e)}")
+        raise HTTPException(
+            status_code=500,
+            detail=f"엑셀 다운로드 실패: {str(e)}"
+        )
+
+
+def save_materials_data(materials_data: List[Dict], file_path: str, request_no: str, job_no: str, grouped_materials: List[Dict] = None):
+    """
+    자재 데이터를 JSON으로 저장 (프론트엔드에서 동일한 엑셀 포맷으로 생성하기 위해)
+    """
+    # 수량을 정수로 변환하여 저장
+    cleaned_materials = []
+    for material in materials_data:
+        cleaned_material = material.copy()
+        if 'quantity' in cleaned_material:
+            try:
+                cleaned_material['quantity'] = int(float(cleaned_material['quantity']))
+            except (ValueError, TypeError):
+                cleaned_material['quantity'] = 0
+        cleaned_materials.append(cleaned_material)
+    
+    # 그룹화된 자재도 수량 정수 변환
+    cleaned_grouped = []
+    if grouped_materials:
+        for group in grouped_materials:
+            cleaned_group = group.copy()
+            if 'quantity' in cleaned_group:
+                try:
+                    cleaned_group['quantity'] = int(float(cleaned_group['quantity']))
+                except (ValueError, TypeError):
+                    cleaned_group['quantity'] = 0
+            cleaned_grouped.append(cleaned_group)
+    
+    data_to_save = {
+        "request_no": request_no,
+        "job_no": job_no,
+        "created_at": datetime.now().isoformat(),
+        "materials": cleaned_materials,
+        "grouped_materials": cleaned_grouped or []
+    }
+    
+    with open(file_path, 'w', encoding='utf-8') as f:
+        json.dump(data_to_save, f, ensure_ascii=False, indent=2)
+
+
+def create_excel_file(materials_data: List[Dict], file_path: str, request_no: str, job_no: str):
+    """
+    자재 데이터로 엑셀 파일 생성 (BOM 페이지와 동일한 형식)
+    """
+    import openpyxl
+    from openpyxl.styles import Font, PatternFill, Alignment, Border, Side
+    
+    # 새 워크북 생성
+    wb = openpyxl.Workbook()
+    wb.remove(wb.active)  # 기본 시트 제거
+    
+    # 카테고리별 그룹화
+    category_groups = {}
+    for material in materials_data:
+        category = material.get('category', 'UNKNOWN')
+        if category not in category_groups:
+            category_groups[category] = []
+        category_groups[category].append(material)
+    
+    # 각 카테고리별 시트 생성
+    for category, items in category_groups.items():
+        if not items:
+            continue
+            
+        ws = wb.create_sheet(title=category)
+        
+        # 헤더 정의 (P열에 납기일, 관리항목 통일)
+        headers = ['TAGNO', '품목명', '수량', '통화구분', '단가', '크기', '압력등급', '스케줄', 
+                  '재질', '상세내역', '사용자요구', '관리항목1', '관리항목2', '관리항목3', 
+                  '관리항목4', '납기일(YYYY-MM-DD)', '관리항목5', '관리항목6', '관리항목7',
+                  '관리항목8', '관리항목9', '관리항목10']
+        
+        # 헤더 작성
+        for col, header in enumerate(headers, 1):
+            cell = ws.cell(row=1, column=col, value=header)
+            cell.font = Font(bold=True, color="000000", size=12, name="맑은 고딕")
+            cell.fill = PatternFill(start_color="B3D9FF", end_color="B3D9FF", fill_type="solid")
+            cell.alignment = Alignment(horizontal="center", vertical="center")
+            cell.border = Border(
+                top=Side(style="thin", color="666666"),
+                bottom=Side(style="thin", color="666666"),
+                left=Side(style="thin", color="666666"),
+                right=Side(style="thin", color="666666")
+            )
+        
+        # 데이터 작성
+        for row_idx, material in enumerate(items, 2):
+            data = [
+                '',  # TAGNO
+                category,  # 품목명
+                material.get('quantity', 0),  # 수량
+                'KRW',  # 통화구분
+                1,  # 단가
+                material.get('size', '-'),  # 크기
+                '-',  # 압력등급 (추후 개선)
+                material.get('schedule', '-'),  # 스케줄
+                material.get('material_grade', '-'),  # 재질
+                '-',  # 상세내역 (추후 개선)
+                material.get('user_requirement', ''),  # 사용자요구
+                '', '', '', '', '',  # 관리항목들
+                datetime.now().strftime('%Y-%m-%d')  # 납기일
+            ]
+            
+            for col, value in enumerate(data, 1):
+                ws.cell(row=row_idx, column=col, value=value)
+        
+        # 컬럼 너비 자동 조정
+        for column in ws.columns:
+            max_length = 0
+            column_letter = column[0].column_letter
+            for cell in column:
+                try:
+                    if len(str(cell.value)) > max_length:
+                        max_length = len(str(cell.value))
+                except:
+                    pass
+            adjusted_width = min(max(max_length + 2, 10), 50)
+            ws.column_dimensions[column_letter].width = adjusted_width
+    
+    # 파일 저장
+    wb.save(file_path)
+
+
+@router.post("/upload-excel")
+async def upload_request_excel(
+    excel_file: UploadFile = File(...),
+    request_id: int = Form(...),
+    category: str = Form(...),
+    # current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    구매신청에 대한 엑셀 파일 업로드 (BOM에서 생성한 원본 파일)
+    """
+    try:
+        # 구매신청 정보 조회
+        query = text("""
+            SELECT request_no, job_no
+            FROM purchase_requests
+            WHERE request_id = :request_id
+        """)
+        result = db.execute(query, {"request_id": request_id}).fetchone()
+        
+        if not result:
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail="구매신청을 찾을 수 없습니다"
+            )
+        
+        # 엑셀 저장 디렉토리 생성
+        excel_dir = Path("uploads/excel_exports")
+        excel_dir.mkdir(parents=True, exist_ok=True)
+        
+        # 파일명 생성
+        timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
+        safe_filename = f"{result.job_no}_{result.request_no}_{timestamp}.xlsx"
+        file_path = excel_dir / safe_filename
+        
+        # 파일 저장
+        content = await excel_file.read()
+        with open(file_path, "wb") as f:
+            f.write(content)
+        
+        # 구매신청 테이블에 엑셀 파일 경로 업데이트
+        update_query = text("""
+            UPDATE purchase_requests 
+            SET excel_file_path = :excel_file_path
+            WHERE request_id = :request_id
+        """)
+        
+        db.execute(update_query, {
+            "excel_file_path": safe_filename,
+            "request_id": request_id
+        })
+        
+        db.commit()
+        
+        logger.info(f"엑셀 파일 업로드 완료: {safe_filename}")
+        
+        return {
+            "success": True,
+            "message": "엑셀 파일이 성공적으로 업로드되었습니다",
+            "file_path": safe_filename
+        }
+        
+    except HTTPException:
+        raise
+    except Exception as e:
+        db.rollback()
+        logger.error(f"Failed to upload excel file: {str(e)}")
+        raise HTTPException(
+            status_code=500,
+            detail=f"엑셀 파일 업로드 실패: {str(e)}"
+        )

backend/app/routers/purchase_tracking.py

@@ -0,0 +1,452 @@
+"""
+구매 추적 및 관리 API
+엑셀 내보내기 이력 및 구매 상태 관리
+"""
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy import text
+from sqlalchemy.orm import Session
+from typing import Optional, List, Dict, Any
+from datetime import datetime, date
+import json
+
+from ..database import get_db
+from ..auth.jwt_service import get_current_user
+from ..utils.logger import logger
+
+router = APIRouter(prefix="/purchase", tags=["Purchase Tracking"])
+
+
+@router.post("/export-history")
+async def create_export_history(
+    file_id: int,
+    job_no: Optional[str] = None,
+    export_type: str = "full",
+    category: Optional[str] = None,
+    material_ids: List[int] = [],
+    filters_applied: Optional[Dict] = None,
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    엑셀 내보내기 이력 생성 및 자재 추적
+    """
+    try:
+        # 내보내기 이력 생성
+        insert_history = text("""
+            INSERT INTO excel_export_history (
+                file_id, job_no, exported_by, export_type, 
+                category, material_count, filters_applied
+            ) VALUES (
+                :file_id, :job_no, :exported_by, :export_type,
+                :category, :material_count, :filters_applied
+            ) RETURNING export_id
+        """)
+        
+        result = db.execute(insert_history, {
+            "file_id": file_id,
+            "job_no": job_no,
+            "exported_by": current_user.get("user_id"),
+            "export_type": export_type,
+            "category": category,
+            "material_count": len(material_ids),
+            "filters_applied": json.dumps(filters_applied) if filters_applied else None
+        })
+        
+        export_id = result.fetchone().export_id
+        
+        # 내보낸 자재들 기록
+        if material_ids:
+            for material_id in material_ids:
+                insert_material = text("""
+                    INSERT INTO exported_materials (
+                        export_id, material_id, purchase_status
+                    ) VALUES (
+                        :export_id, :material_id, 'pending'
+                    )
+                """)
+                db.execute(insert_material, {
+                    "export_id": export_id,
+                    "material_id": material_id
+                })
+        
+        db.commit()
+        
+        logger.info(f"Export history created: {export_id} with {len(material_ids)} materials")
+        
+        return {
+            "success": True,
+            "export_id": export_id,
+            "message": f"{len(material_ids)}개 자재의 내보내기 이력이 저장되었습니다"
+        }
+        
+    except Exception as e:
+        db.rollback()
+        logger.error(f"Failed to create export history: {str(e)}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"내보내기 이력 생성 실패: {str(e)}"
+        )
+
+
+@router.get("/export-history")
+async def get_export_history(
+    file_id: Optional[int] = None,
+    job_no: Optional[str] = None,
+    limit: int = 50,
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    엑셀 내보내기 이력 조회
+    """
+    try:
+        query = text("""
+            SELECT 
+                eeh.export_id,
+                eeh.file_id,
+                eeh.job_no,
+                eeh.export_date,
+                eeh.export_type,
+                eeh.category,
+                eeh.material_count,
+                u.name as exported_by_name,
+                f.original_filename,
+                COUNT(DISTINCT em.material_id) as actual_material_count,
+                COUNT(DISTINCT CASE WHEN em.purchase_status = 'pending' THEN em.material_id END) as pending_count,
+                COUNT(DISTINCT CASE WHEN em.purchase_status = 'requested' THEN em.material_id END) as requested_count,
+                COUNT(DISTINCT CASE WHEN em.purchase_status = 'ordered' THEN em.material_id END) as ordered_count,
+                COUNT(DISTINCT CASE WHEN em.purchase_status = 'received' THEN em.material_id END) as received_count
+            FROM excel_export_history eeh
+            LEFT JOIN users u ON eeh.exported_by = u.user_id
+            LEFT JOIN files f ON eeh.file_id = f.id
+            LEFT JOIN exported_materials em ON eeh.export_id = em.export_id
+            WHERE 1=1
+                AND (:file_id IS NULL OR eeh.file_id = :file_id)
+                AND (:job_no IS NULL OR eeh.job_no = :job_no)
+            GROUP BY 
+                eeh.export_id, eeh.file_id, eeh.job_no, eeh.export_date,
+                eeh.export_type, eeh.category, eeh.material_count,
+                u.name, f.original_filename
+            ORDER BY eeh.export_date DESC
+            LIMIT :limit
+        """)
+        
+        results = db.execute(query, {
+            "file_id": file_id,
+            "job_no": job_no,
+            "limit": limit
+        }).fetchall()
+        
+        history = []
+        for row in results:
+            history.append({
+                "export_id": row.export_id,
+                "file_id": row.file_id,
+                "job_no": row.job_no,
+                "export_date": row.export_date.isoformat() if row.export_date else None,
+                "export_type": row.export_type,
+                "category": row.category,
+                "material_count": row.material_count,
+                "exported_by": row.exported_by_name,
+                "file_name": row.original_filename,
+                "status_summary": {
+                    "total": row.actual_material_count,
+                    "pending": row.pending_count,
+                    "requested": row.requested_count,
+                    "ordered": row.ordered_count,
+                    "received": row.received_count
+                }
+            })
+        
+        return {
+            "success": True,
+            "history": history,
+            "count": len(history)
+        }
+        
+    except Exception as e:
+        logger.error(f"Failed to get export history: {str(e)}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"내보내기 이력 조회 실패: {str(e)}"
+        )
+
+
+@router.get("/materials/status")
+async def get_materials_by_status(
+    status: Optional[str] = None,
+    export_id: Optional[int] = None,
+    file_id: Optional[int] = None,
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    구매 상태별 자재 목록 조회
+    """
+    try:
+        query = text("""
+            SELECT 
+                em.id as exported_material_id,
+                em.material_id,
+                m.original_description,
+                m.classified_category,
+                m.quantity,
+                m.unit,
+                em.purchase_status,
+                em.purchase_request_no,
+                em.purchase_order_no,
+                em.vendor_name,
+                em.expected_date,
+                em.quantity_ordered,
+                em.quantity_received,
+                em.unit_price,
+                em.total_price,
+                em.notes,
+                em.updated_at,
+                eeh.export_date,
+                f.original_filename as file_name,
+                j.job_no,
+                j.job_name
+            FROM exported_materials em
+            JOIN materials m ON em.material_id = m.id
+            JOIN excel_export_history eeh ON em.export_id = eeh.export_id
+            LEFT JOIN files f ON eeh.file_id = f.id
+            LEFT JOIN jobs j ON eeh.job_no = j.job_no
+            WHERE 1=1
+                AND (:status IS NULL OR em.purchase_status = :status)
+                AND (:export_id IS NULL OR em.export_id = :export_id)
+                AND (:file_id IS NULL OR eeh.file_id = :file_id)
+            ORDER BY em.updated_at DESC
+        """)
+        
+        results = db.execute(query, {
+            "status": status,
+            "export_id": export_id,
+            "file_id": file_id
+        }).fetchall()
+        
+        materials = []
+        for row in results:
+            materials.append({
+                "exported_material_id": row.exported_material_id,
+                "material_id": row.material_id,
+                "description": row.original_description,
+                "category": row.classified_category,
+                "quantity": row.quantity,
+                "unit": row.unit,
+                "purchase_status": row.purchase_status,
+                "purchase_request_no": row.purchase_request_no,
+                "purchase_order_no": row.purchase_order_no,
+                "vendor_name": row.vendor_name,
+                "expected_date": row.expected_date.isoformat() if row.expected_date else None,
+                "quantity_ordered": row.quantity_ordered,
+                "quantity_received": row.quantity_received,
+                "unit_price": float(row.unit_price) if row.unit_price else None,
+                "total_price": float(row.total_price) if row.total_price else None,
+                "notes": row.notes,
+                "updated_at": row.updated_at.isoformat() if row.updated_at else None,
+                "export_date": row.export_date.isoformat() if row.export_date else None,
+                "file_name": row.file_name,
+                "job_no": row.job_no,
+                "job_name": row.job_name
+            })
+        
+        return {
+            "success": True,
+            "materials": materials,
+            "count": len(materials)
+        }
+        
+    except Exception as e:
+        logger.error(f"Failed to get materials by status: {str(e)}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"구매 상태별 자재 조회 실패: {str(e)}"
+        )
+
+
+@router.patch("/materials/{exported_material_id}/status")
+async def update_purchase_status(
+    exported_material_id: int,
+    new_status: str,
+    purchase_request_no: Optional[str] = None,
+    purchase_order_no: Optional[str] = None,
+    vendor_name: Optional[str] = None,
+    expected_date: Optional[date] = None,
+    quantity_ordered: Optional[int] = None,
+    quantity_received: Optional[int] = None,
+    unit_price: Optional[float] = None,
+    notes: Optional[str] = None,
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    자재 구매 상태 업데이트
+    """
+    try:
+        # 현재 상태 조회
+        get_current = text("""
+            SELECT purchase_status, material_id 
+            FROM exported_materials 
+            WHERE id = :id
+        """)
+        current = db.execute(get_current, {"id": exported_material_id}).fetchone()
+        
+        if not current:
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail="해당 자재를 찾을 수 없습니다"
+            )
+        
+        # 상태 업데이트
+        update_query = text("""
+            UPDATE exported_materials
+            SET 
+                purchase_status = :new_status,
+                purchase_request_no = COALESCE(:pr_no, purchase_request_no),
+                purchase_order_no = COALESCE(:po_no, purchase_order_no),
+                vendor_name = COALESCE(:vendor, vendor_name),
+                expected_date = COALESCE(:expected_date, expected_date),
+                quantity_ordered = COALESCE(:qty_ordered, quantity_ordered),
+                quantity_received = COALESCE(:qty_received, quantity_received),
+                unit_price = COALESCE(:unit_price, unit_price),
+                total_price = CASE 
+                    WHEN :unit_price IS NOT NULL AND :qty_ordered IS NOT NULL 
+                    THEN :unit_price * :qty_ordered
+                    WHEN :unit_price IS NOT NULL AND quantity_ordered IS NOT NULL
+                    THEN :unit_price * quantity_ordered
+                    ELSE total_price
+                END,
+                notes = COALESCE(:notes, notes),
+                updated_by = :updated_by,
+                requested_date = CASE WHEN :new_status = 'requested' THEN CURRENT_TIMESTAMP ELSE requested_date END,
+                ordered_date = CASE WHEN :new_status = 'ordered' THEN CURRENT_TIMESTAMP ELSE ordered_date END,
+                received_date = CASE WHEN :new_status = 'received' THEN CURRENT_TIMESTAMP ELSE received_date END
+            WHERE id = :id
+        """)
+        
+        db.execute(update_query, {
+            "id": exported_material_id,
+            "new_status": new_status,
+            "pr_no": purchase_request_no,
+            "po_no": purchase_order_no,
+            "vendor": vendor_name,
+            "expected_date": expected_date,
+            "qty_ordered": quantity_ordered,
+            "qty_received": quantity_received,
+            "unit_price": unit_price,
+            "notes": notes,
+            "updated_by": current_user.get("user_id")
+        })
+        
+        # 이력 기록
+        insert_history = text("""
+            INSERT INTO purchase_status_history (
+                exported_material_id, material_id, 
+                previous_status, new_status, 
+                changed_by, reason
+            ) VALUES (
+                :em_id, :material_id,
+                :prev_status, :new_status,
+                :changed_by, :reason
+            )
+        """)
+        
+        db.execute(insert_history, {
+            "em_id": exported_material_id,
+            "material_id": current.material_id,
+            "prev_status": current.purchase_status,
+            "new_status": new_status,
+            "changed_by": current_user.get("user_id"),
+            "reason": notes
+        })
+        
+        db.commit()
+        
+        logger.info(f"Purchase status updated: {exported_material_id} from {current.purchase_status} to {new_status}")
+        
+        return {
+            "success": True,
+            "message": f"구매 상태가 {new_status}로 변경되었습니다"
+        }
+        
+    except HTTPException:
+        raise
+    except Exception as e:
+        db.rollback()
+        logger.error(f"Failed to update purchase status: {str(e)}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"구매 상태 업데이트 실패: {str(e)}"
+        )
+
+
+@router.get("/status-summary")
+async def get_status_summary(
+    file_id: Optional[int] = None,
+    job_no: Optional[str] = None,
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    구매 상태 요약 통계
+    """
+    try:
+        query = text("""
+            SELECT 
+                em.purchase_status,
+                COUNT(DISTINCT em.material_id) as material_count,
+                SUM(em.quantity_exported) as total_quantity,
+                SUM(em.total_price) as total_amount,
+                COUNT(DISTINCT em.export_id) as export_count
+            FROM exported_materials em
+            JOIN excel_export_history eeh ON em.export_id = eeh.export_id
+            WHERE 1=1
+                AND (:file_id IS NULL OR eeh.file_id = :file_id)
+                AND (:job_no IS NULL OR eeh.job_no = :job_no)
+            GROUP BY em.purchase_status
+        """)
+        
+        results = db.execute(query, {
+            "file_id": file_id,
+            "job_no": job_no
+        }).fetchall()
+        
+        summary = {}
+        total_materials = 0
+        total_amount = 0
+        
+        for row in results:
+            summary[row.purchase_status] = {
+                "material_count": row.material_count,
+                "total_quantity": row.total_quantity,
+                "total_amount": float(row.total_amount) if row.total_amount else 0,
+                "export_count": row.export_count
+            }
+            total_materials += row.material_count
+            if row.total_amount:
+                total_amount += float(row.total_amount)
+        
+        # 기본 상태들 추가 (없는 경우 0으로)
+        for status in ['pending', 'requested', 'ordered', 'received', 'cancelled']:
+            if status not in summary:
+                summary[status] = {
+                    "material_count": 0,
+                    "total_quantity": 0,
+                    "total_amount": 0,
+                    "export_count": 0
+                }
+        
+        return {
+            "success": True,
+            "summary": summary,
+            "total_materials": total_materials,
+            "total_amount": total_amount
+        }
+        
+    except Exception as e:
+        logger.error(f"Failed to get status summary: {str(e)}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"구매 상태 요약 조회 실패: {str(e)}"
+        )

backend/app/routers/revision_management.py

@@ -0,0 +1,327 @@
+"""
+간단한 리비전 관리 API
+- 리비전 세션 생성 및 관리
+- 자재 비교 및 변경사항 처리
+"""
+
+from fastapi import APIRouter, Depends, HTTPException, Query
+from sqlalchemy.orm import Session
+from sqlalchemy import text
+from typing import List, Optional, Dict, Any
+from datetime import datetime
+from pydantic import BaseModel
+
+from ..database import get_db
+from ..auth.middleware import get_current_user
+from ..services.revision_session_service import RevisionSessionService
+from ..services.revision_comparison_service import RevisionComparisonService
+
+router = APIRouter(prefix="/revision-management", tags=["revision-management"])
+
+class RevisionSessionCreate(BaseModel):
+    job_no: str
+    current_file_id: int
+    previous_file_id: int
+
+@router.post("/sessions")
+async def create_revision_session(
+    session_data: RevisionSessionCreate,
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """리비전 세션 생성"""
+    try:
+        session_service = RevisionSessionService(db)
+        
+        # 실제 DB에 세션 생성
+        result = session_service.create_revision_session(
+            job_no=session_data.job_no,
+            current_file_id=session_data.current_file_id,
+            previous_file_id=session_data.previous_file_id,
+            username=current_user.get("username")
+        )
+        
+        return {
+            "success": True,
+            "data": result,
+            "message": "리비전 세션이 생성되었습니다."
+        }
+        
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"리비전 세션 생성 실패: {str(e)}")
+
+@router.get("/sessions/{session_id}")
+async def get_session_status(
+    session_id: int,
+    db: Session = Depends(get_db)
+):
+    """세션 상태 조회"""
+    try:
+        session_service = RevisionSessionService(db)
+        
+        # 실제 DB에서 세션 상태 조회
+        result = session_service.get_session_status(session_id)
+        
+        return {
+            "success": True,
+            "data": result
+        }
+        
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"세션 상태 조회 실패: {str(e)}")
+
+@router.get("/sessions/{session_id}/summary")
+async def get_revision_summary(
+    session_id: int,
+    db: Session = Depends(get_db)
+):
+    """리비전 요약 조회"""
+    try:
+        comparison_service = RevisionComparisonService(db)
+        
+        # 세션의 모든 변경사항 조회
+        changes = comparison_service.get_session_changes(session_id)
+        
+        # 요약 통계 계산
+        summary = {
+            "session_id": session_id,
+            "total_changes": len(changes),
+            "new_materials": len([c for c in changes if c['change_type'] == 'added']),
+            "changed_materials": len([c for c in changes if c['change_type'] == 'quantity_changed']),
+            "removed_materials": len([c for c in changes if c['change_type'] == 'removed']),
+            "categories": {}
+        }
+        
+        # 카테고리별 통계
+        for change in changes:
+            category = change['category']
+            if category not in summary["categories"]:
+                summary["categories"][category] = {
+                    "total_changes": 0,
+                    "added": 0,
+                    "changed": 0,
+                    "removed": 0
+                }
+            
+            summary["categories"][category]["total_changes"] += 1
+            if change['change_type'] == 'added':
+                summary["categories"][category]["added"] += 1
+            elif change['change_type'] == 'quantity_changed':
+                summary["categories"][category]["changed"] += 1
+            elif change['change_type'] == 'removed':
+                summary["categories"][category]["removed"] += 1
+        
+        return {
+            "success": True,
+            "data": summary
+        }
+        
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"리비전 요약 조회 실패: {str(e)}")
+
+@router.post("/sessions/{session_id}/compare/{category}")
+async def compare_category(
+    session_id: int,
+    category: str,
+    db: Session = Depends(get_db)
+):
+    """카테고리별 자재 비교"""
+    try:
+        # 세션 정보 조회
+        session_service = RevisionSessionService(db)
+        session_status = session_service.get_session_status(session_id)
+        session_info = session_status["session_info"]
+        
+        # 자재 비교 수행
+        comparison_service = RevisionComparisonService(db)
+        result = comparison_service.compare_materials_by_category(
+            current_file_id=session_info["current_file_id"],
+            previous_file_id=session_info["previous_file_id"],
+            category=category,
+            session_id=session_id
+        )
+        
+        return {
+            "success": True,
+            "data": result
+        }
+        
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"카테고리 비교 실패: {str(e)}")
+
+@router.get("/history/{job_no}")
+async def get_revision_history(
+    job_no: str,
+    db: Session = Depends(get_db)
+):
+    """리비전 히스토리 조회"""
+    try:
+        session_service = RevisionSessionService(db)
+        
+        # 실제 DB에서 리비전 히스토리 조회
+        history = session_service.get_job_revision_history(job_no)
+        
+        return {
+            "success": True,
+            "data": {
+                "job_no": job_no,
+                "history": history
+            }
+        }
+        
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"리비전 히스토리 조회 실패: {str(e)}")
+
+# 세션 변경사항 조회
+@router.get("/sessions/{session_id}/changes")
+async def get_session_changes(
+    session_id: int,
+    category: Optional[str] = Query(None),
+    db: Session = Depends(get_db)
+):
+    """세션의 변경사항 조회"""
+    try:
+        comparison_service = RevisionComparisonService(db)
+        
+        # 세션의 변경사항 조회
+        changes = comparison_service.get_session_changes(session_id, category)
+        
+        return {
+            "success": True,
+            "data": {
+                "changes": changes,
+                "total_count": len(changes)
+            }
+        }
+        
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"세션 변경사항 조회 실패: {str(e)}")
+
+# 리비전 액션 처리
+@router.post("/changes/{change_id}/process")
+async def process_revision_action(
+    change_id: int,
+    action_data: Dict[str, Any],
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """리비전 액션 처리"""
+    try:
+        comparison_service = RevisionComparisonService(db)
+        
+        # 액션 처리
+        result = comparison_service.process_revision_action(
+            change_id=change_id,
+            action=action_data.get("action"),
+            username=current_user.get("username"),
+            notes=action_data.get("notes")
+        )
+        
+        return {
+            "success": True,
+            "data": result
+        }
+        
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"리비전 액션 처리 실패: {str(e)}")
+
+# 세션 완료
+@router.post("/sessions/{session_id}/complete")
+async def complete_revision_session(
+    session_id: int,
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """리비전 세션 완료"""
+    try:
+        session_service = RevisionSessionService(db)
+        
+        # 세션 완료 처리
+        result = session_service.complete_session(
+            session_id=session_id,
+            username=current_user.get("username")
+        )
+        
+        return {
+            "success": True,
+            "data": result
+        }
+        
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"리비전 세션 완료 실패: {str(e)}")
+
+# 세션 취소
+@router.post("/sessions/{session_id}/cancel")
+async def cancel_revision_session(
+    session_id: int,
+    reason: Optional[str] = Query(None),
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """리비전 세션 취소"""
+    try:
+        session_service = RevisionSessionService(db)
+        
+        # 세션 취소 처리
+        result = session_service.cancel_session(
+            session_id=session_id,
+            username=current_user.get("username"),
+            reason=reason
+        )
+        
+        return {
+            "success": True,
+            "data": {"cancelled": result}
+        }
+        
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"리비전 세션 취소 실패: {str(e)}")
+
+@router.get("/categories")
+async def get_supported_categories():
+    """지원 카테고리 목록 조회"""
+    try:
+        categories = [
+            {"key": "PIPE", "name": "배관", "description": "파이프 및 배관 자재"},
+            {"key": "FITTING", "name": "피팅", "description": "배관 연결 부품"},
+            {"key": "FLANGE", "name": "플랜지", "description": "플랜지 및 연결 부품"},
+            {"key": "VALVE", "name": "밸브", "description": "각종 밸브류"},
+            {"key": "GASKET", "name": "가스켓", "description": "씰링 부품"},
+            {"key": "BOLT", "name": "볼트", "description": "체결 부품"},
+            {"key": "SUPPORT", "name": "서포트", "description": "지지대 및 구조물"},
+            {"key": "SPECIAL", "name": "특수자재", "description": "특수 목적 자재"},
+            {"key": "UNCLASSIFIED", "name": "미분류", "description": "분류되지 않은 자재"}
+        ]
+        
+        return {
+            "success": True,
+            "data": {
+                "categories": categories
+            }
+        }
+        
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"지원 카테고리 조회 실패: {str(e)}")
+
+@router.get("/actions")
+async def get_supported_actions():
+    """지원 액션 목록 조회"""
+    try:
+        actions = [
+            {"key": "new_material", "name": "신규 자재", "description": "새로 추가된 자재"},
+            {"key": "additional_purchase", "name": "추가 구매", "description": "구매된 자재의 수량 증가"},
+            {"key": "inventory_transfer", "name": "재고 이관", "description": "구매된 자재의 수량 감소 또는 제거"},
+            {"key": "purchase_cancel", "name": "구매 취소", "description": "미구매 자재의 제거"},
+            {"key": "quantity_update", "name": "수량 업데이트", "description": "미구매 자재의 수량 변경"},
+            {"key": "maintain", "name": "유지", "description": "변경사항 없음"}
+        ]
+        
+        return {
+            "success": True,
+            "data": {
+                "actions": actions
+            }
+        }
+        
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"지원 액션 조회 실패: {str(e)}")

backend/app/services/bolt_classifier.py

@@ -706,7 +706,8 @@ def classify_bolt(dat_file: str, description: str, main_nom: str, length: Option
             "nominal_size_fraction": dimensions_result.get('nominal_size_fraction', main_nom),
             "length": dimensions_result.get('length', ''),
             "diameter": dimensions_result.get('diameter', ''),
-            "dimension_description": dimensions_result.get('dimension_description', '')
+            "dimension_description": dimensions_result.get('dimension_description', ''),
+            "bolts_per_flange": dimensions_result.get('bolts_per_flange', 1)
         },
         
         "grade_strength": {
@@ -966,12 +967,19 @@ def extract_bolt_dimensions(main_nom: str, description: str) -> Dict:
     except:
         nominal_size_fraction = actual_bolt_size
     
+    # 플랜지당 볼트 세트 수 추출 (예: (8), (4))
+    bolts_per_flange = 1  # 기본값
+    flange_bolt_pattern = re.search(r'\((\d+)\)', description)
+    if flange_bolt_pattern:
+        bolts_per_flange = int(flange_bolt_pattern.group(1))
+    
     dimensions = {
         "nominal_size": actual_bolt_size,  # 실제 볼트 사이즈
         "nominal_size_fraction": nominal_size_fraction,  # 분수 변환값
         "length": "",
         "diameter": "",
-        "dimension_description": nominal_size_fraction  # 분수로 표시
+        "dimension_description": nominal_size_fraction,  # 분수로 표시
+        "bolts_per_flange": bolts_per_flange  # 플랜지당 볼트 세트 수
     }
     
     # 길이 정보 추출 (개선된 패턴)
@@ -984,6 +992,8 @@ def extract_bolt_dimensions(main_nom: str, description: str) -> Dict:
         r'X\s*(\d+(?:\.\d+)?)\s*MM',  # M8 X 20MM 형태
         r',\s*(\d+(?:\.\d+)?)\s*LG',  # ", 145.0000 LG" 형태 (PSV, LT 볼트용)
         r',\s*(\d+(?:\.\d+)?)\s+(?:CK|PSV|LT)',  # ", 140 CK" 형태 (PSV 볼트용)
+        r'PSV\s+(\d+(?:\.\d+)?)',  # PSV 140 형태 (PSV 볼트 전용)
+        r'(\d+(?:\.\d+)?)\s+PSV',  # 140 PSV 형태 (PSV 볼트 전용)
         r'(\d+(?:\.\d+)?)\s*MM(?:\s|,|$)',  # 75MM 형태 (단독)
         r'(\d+(?:\.\d+)?)\s*mm(?:\s|,|$)'   # 75mm 형태 (단독)
     ]

backend/app/services/classifier_constants.py

@@ -0,0 +1,157 @@
+"""
+자재 분류 시스템용 상수 및 키워드 정의
+중복 로직 제거 및 유지보수성 향상을 위해 중앙 집중화됨
+"""
+
+from typing import Dict, List
+
+# ==============================================================================
+# 1. 압력 등급 (Pressure Ratings)
+# ==============================================================================
+
+# 단순 키워드 목록 (Integrated Classifier용)
+LEVEL3_PRESSURE_KEYWORDS = [
+    "150LB", "300LB", "600LB", "900LB", "1500LB", 
+    "2500LB", "3000LB", "6000LB", "9000LB"
+]
+
+# 상세 스펙 및 메타데이터 (Fitting Classifier용)
+PRESSURE_RATINGS_SPECS = {
+    "150LB": {"max_pressure": "285 PSI", "common_use": "저압 일반용"},
+    "300LB": {"max_pressure": "740 PSI", "common_use": "중압용"},
+    "600LB": {"max_pressure": "1480 PSI", "common_use": "고압용"},
+    "900LB": {"max_pressure": "2220 PSI", "common_use": "고압용"},
+    "1500LB": {"max_pressure": "3705 PSI", "common_use": "고압용"},
+    "2500LB": {"max_pressure": "6170 PSI", "common_use": "초고압용"},
+    "3000LB": {"max_pressure": "7400 PSI", "common_use": "소구경 고압용"},
+    "6000LB": {"max_pressure": "14800 PSI", "common_use": "소구경 초고압용"},
+    "9000LB": {"max_pressure": "22200 PSI", "common_use": "소구경 극고압용"}
+}
+
+# 정규식 패턴 (Fitting Classifier용)
+PRESSURE_PATTERNS = [
+    r"(\d+)LB",
+    r"CLASS\s*(\d+)",
+    r"CL\s*(\d+)",
+    r"(\d+)#",
+    r"(\d+)\s*LB"
+]
+
+# ==============================================================================
+# 2. OLET 키워드 (OLET Keywords)
+# ==============================================================================
+# Fitting Classifier와 Integrated Classifier에서 공통 사용
+OLET_KEYWORDS = [
+    # Full Names
+    "SOCK-O-LET", "WELD-O-LET", "ELL-O-LET", "THREAD-O-LET", "ELB-O-LET", 
+    "NIP-O-LET", "COUP-O-LET", 
+    # Variations
+    "SOCKOLET", "WELDOLET", "ELLOLET", "THREADOLET", "ELBOLET", "NIPOLET", "COUPOLET", 
+    "OLET", "올렛", "O-LET", "SOCKLET", "SOCKET-O-LET", "WELD O-LET", "ELL O-LET",
+    "THREADED-O-LET", "ELBOW-O-LET", "NIPPLE-O-LET", "COUPLING-O-LET",
+    # Abbreviations (Caution: specific context needed sometimes)
+    "SOL", "WOL", "EOL", "TOL", "NOL", "COL"
+]
+
+# ==============================================================================
+# 3. 연결 방식 (Connection Methods)
+# ==============================================================================
+LEVEL3_CONNECTION_KEYWORDS = {
+    "SW": ["SW", "SOCKET WELD", "소켓웰드", "SOCKET-WELD", "_SW_"],
+    "THD": ["THD", "THREADED", "NPT", "나사", "THRD", "TR", "_TR", "_THD"],
+    "BW": ["BW", "BUTT WELD", "맞대기용접", "BUTT-WELD", "_BW"],
+    "FL": ["FL", "FLANGED", "플랜지", "FLG", "_FL_"]
+}
+
+# ==============================================================================
+# 4. 재질 키워드 (Material Keywords)
+# ==============================================================================
+LEVEL4_MATERIAL_KEYWORDS = {
+    "PIPE": ["A106", "A333", "A312", "A53"],
+    "FITTING": ["A234", "A403", "A420"],
+    "FLANGE": ["A182", "A350"],
+    "VALVE": ["A216", "A217", "A351", "A352"],
+    "BOLT": ["A193", "A194", "A320", "A325", "A490"]
+}
+
+GENERIC_MATERIALS = {
+    "A105": ["VALVE", "FLANGE", "FITTING"],
+    "316": ["VALVE", "FLANGE", "FITTING", "PIPE", "BOLT"],
+    "304": ["VALVE", "FLANGE", "FITTING", "PIPE", "BOLT"]
+}
+
+# ==============================================================================
+# 5. 메인 분류 키워드 (Level 1 Type Keywords)
+# ==============================================================================
+LEVEL1_TYPE_KEYWORDS = {
+    "BOLT": [
+        "FLANGE BOLT", "U-BOLT", "U BOLT", "BOLT", "STUD", "NUT", "SCREW", 
+        "WASHER", "볼트", "너트", "스터드", "나사", "와셔", "유볼트"
+    ],
+    "VALVE": [
+        "VALVE", "GATE", "BALL", "GLOBE", "CHECK", "BUTTERFLY", "NEEDLE", 
+        "RELIEF", "SIGHT GLASS", "STRAINER", "밸브", "게이트", "볼", "글로브", 
+        "체크", "버터플라이", "니들", "릴리프", "사이트글라스", "스트레이너"
+    ],
+    "FLANGE": [
+        "FLG", "FLANGE", "플랜지", "프랜지", "ORIFICE", "SPECTACLE", "PADDLE", 
+        "SPACER", "BLIND", "REDUCING FLANGE", "RED FLANGE"
+    ],
+    "PIPE": [
+        "PIPE", "TUBE", "파이프", "배관", "SMLS", "SEAMLESS"
+    ],
+    "FITTING": [
+        # Standard Fittings
+        "ELBOW", "ELL", "TEE", "REDUCER", "CAP", "COUPLING", "NIPPLE", "SWAGE", "PLUG", 
+        "엘보", "티", "리듀서", "캡", "니플", "커플링", "플러그", "CONC", "ECC",
+        # Instrument Fittings
+        "SWAGELOK", "DK-LOK", "HY-LOK", "SUPERLOK", "TUBE FITTING", "COMPRESSION",
+        "UNION", "FERRULE", "NUT & FERRULE", "MALE CONNECTOR", "FEMALE CONNECTOR",
+        "TUBE ADAPTER", "PORT CONNECTOR", "CONNECTOR"
+    ] + OLET_KEYWORDS,  # OLET Keywords 병합
+    "GASKET": [
+        "GASKET", "GASK", "가스켓", "SWG", "SPIRAL"
+    ],
+    "INSTRUMENT": [
+        "GAUGE", "TRANSMITTER", "SENSOR", "THERMOMETER", "계기", "게이지", "트랜스미터", "센서"
+    ],
+    "SUPPORT": [
+        "URETHANE BLOCK", "URETHANE", "BLOCK SHOE", "CLAMP", "SUPPORT", "HANGER", 
+        "SPRING", "우레탄", "블록", "클램프", "서포트", "행거", "스프링", "PIPE CLAMP"
+    ],
+    "PLATE": [
+        "PLATE", "PL", "CHECKER PLATE", "판재", "철판"
+    ],
+    "STRUCTURAL": [
+        "H-BEAM", "BEAM", "ANGLE", "CHANNEL", "H-SECTION", "I-BEAM", "형강", "앵글", "채널"
+    ]
+}
+
+# ==============================================================================
+# 6. 서브타입 키워드 (Level 2 Subtype Keywords)
+# ==============================================================================
+LEVEL2_SUBTYPE_KEYWORDS = {
+    "VALVE": {
+        "GATE": ["GATE VALVE", "GATE", "게이트 밸브"],
+        "BALL": ["BALL VALVE", "BALL", "볼 밸브"],
+        "GLOBE": ["GLOBE VALVE", "GLOBE", "글로브 밸브"],
+        "CHECK": ["CHECK VALVE", "CHECK", "체크 밸브", "역지 밸브"]
+    },
+    "FLANGE": {
+        "WELD_NECK": ["WELD NECK", "WN", "웰드넥"],
+        "SLIP_ON": ["SLIP ON", "SO", "슬립온"],
+        "BLIND": ["BLIND", "BL", "막음", "차단"],
+        "SOCKET_WELD": ["SOCKET WELD", "소켓웰드"]
+    },
+    "BOLT": {
+        "HEX_BOLT": ["HEX BOLT", "HEXAGON", "육각 볼트"],
+        "STUD_BOLT": ["STUD BOLT", "STUD", "스터드 볼트"],
+        "U_BOLT": ["U-BOLT", "U BOLT", "유볼트"]
+    },
+    "SUPPORT": {
+        "URETHANE_BLOCK": ["URETHANE BLOCK", "BLOCK SHOE", "우레탄 블록"],
+        "CLAMP": ["CLAMP", "클램프"],
+        "HANGER": ["HANGER", "SUPPORT", "행거", "서포트"],
+        "SPRING": ["SPRING", "스프링"]
+    }
+}

backend/app/services/excel_parser.py

@@ -0,0 +1,300 @@
+
+import pandas as pd
+import re
+from typing import List, Dict, Optional
+import uuid
+from datetime import datetime
+from pathlib import Path
+
+# 허용된 확장자
+ALLOWED_EXTENSIONS = {".xlsx", ".xls", ".csv"}
+
+class BOMParser:
+    """BOM 파일 파싱을 담당하는 클래스"""
+    
+    @staticmethod
+    def validate_extension(filename: str) -> bool:
+        return Path(filename).suffix.lower() in ALLOWED_EXTENSIONS
+
+    @staticmethod
+    def generate_unique_filename(original_filename: str) -> str:
+        timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
+        unique_id = str(uuid.uuid4())[:8]
+        stem = Path(original_filename).stem
+        suffix = Path(original_filename).suffix
+        return f"{stem}_{timestamp}_{unique_id}{suffix}"
+
+    @staticmethod
+    def detect_format(df: pd.DataFrame) -> str:
+        """
+        엑셀 헤더를 분석하여 양식을 감지합니다.
+        
+        Returns:
+            'INVENTOR': 인벤터 추출 양식 (NO., NAME, Q'ty, LENGTH & THICKNESS...)
+            'STANDARD': 기존 표준/퍼지 매핑 엑셀 (DWG_NAME, LINE_NUM, MAIN_NOM...)
+        """
+        columns = [str(c).strip().upper() for c in df.columns]
+        
+        # 인벤터 양식 특징 (오타 포함)
+        INVENTOR_KEYWORDS = ['LENGTH & THICKNESS', 'DESCIPTION', "Q'TY"]
+        
+        for keyword in INVENTOR_KEYWORDS:
+            if any(keyword in col for col in columns):
+                return 'INVENTOR'
+        
+        # 표준 양식 특징
+        STANDARD_KEYWORDS = ['MAIN_NOM', 'DWG_NAME', 'LINE_NUM']
+        for keyword in STANDARD_KEYWORDS:
+            if any(keyword in col for col in columns):
+                return 'STANDARD'
+                
+        return 'STANDARD'  # 기본값
+
+    @classmethod
+    def parse_file(cls, file_path: str) -> List[Dict]:
+        """파일 경로를 받아 적절한 파서를 통해 데이터를 추출합니다."""
+        file_extension = Path(file_path).suffix.lower()
+        
+        try:
+            if file_extension == ".csv":
+                df = pd.read_csv(file_path, encoding='utf-8')
+            elif file_extension in [".xlsx", ".xls"]:
+                # xlrd 엔진 명시 (xls 지원)
+                if file_extension == ".xls":
+                    df = pd.read_excel(file_path, sheet_name=0, engine='xlrd')
+                else:
+                    df = pd.read_excel(file_path, sheet_name=0, engine='openpyxl')
+            else:
+                raise ValueError("지원하지 않는 파일 형식")
+            
+            # 데이터프레임 전처리 (빈 행 제거 등)
+            df = df.dropna(how='all')
+            
+            # 양식 감지
+            format_type = cls.detect_format(df)
+            print(f"📋 감지된 BOM 양식: {format_type}")
+            
+            if format_type == 'INVENTOR':
+                return cls._parse_inventor_bom(df)
+            else:
+                return cls._parse_standard_bom(df)
+                
+        except Exception as e:
+            raise ValueError(f"파일 파싱 실패: {str(e)}")
+
+    @staticmethod
+    def _parse_standard_bom(df: pd.DataFrame) -> List[Dict]:
+        """기존의 퍼지 매핑 방식 파서 (표준 양식)"""
+        # 컬럼명 전처리
+        df.columns = df.columns.str.strip().str.upper()
+        
+        # 대소문자 구분 없는 매핑을 위해 컬럼명 대문자화 사용
+        column_mapping = {
+            'description': ['DESCRIPTION', 'ITEM', 'MATERIAL', '품명', '자재명', 'SPECIFICATION'],
+            'quantity': ['QTY', 'QUANTITY', 'EA', '수량', 'AMOUNT'],
+            'main_size': ['MAIN_NOM', 'NOMINAL_DIAMETER', 'ND', '주배관', 'SIZE'],
+            'red_size': ['RED_NOM', 'REDUCED_DIAMETER', '축소배관'],
+            'length': ['LENGTH', 'LEN', '길이'],
+            'weight': ['WEIGHT', 'WT', '중량'],
+            'dwg_name': ['DWG_NAME', 'DRAWING', '도면명', '도면번호'],
+            'line_num': ['LINE_NUM', 'LINE_NUMBER', '라인번호']
+        }
+        
+        mapped_columns = {}
+        for standard_col, possible_names in column_mapping.items():
+            for possible_name in possible_names:
+                # 대문자로 비교
+                possible_upper = possible_name.upper()
+                if possible_upper in df.columns:
+                    mapped_columns[standard_col] = possible_upper
+                    break
+        
+        print(f"📋 [Standard] 컬럼 매핑 결과: {mapped_columns}")
+        
+        materials = []
+        for index, row in df.iterrows():
+            description = str(row.get(mapped_columns.get('description', ''), ''))
+            
+            # 제외 항목 처리
+            description_upper = description.upper()
+            if ('WELD GAP' in description_upper or 'WELDING GAP' in description_upper or 
+                '웰드갭' in description_upper or '용접갭' in description_upper):
+                continue
+            
+            # 수량 처리
+            quantity_raw = row.get(mapped_columns.get('quantity', ''), 0)
+            try:
+                quantity = float(quantity_raw) if pd.notna(quantity_raw) else 0
+            except:
+                quantity = 0
+            
+            # 재질 등급 추출 (ASTM)
+            material_grade = ""
+            if "ASTM" in description_upper:
+                astm_match = re.search(r'ASTM\s+(A\d{3,4}[A-Z]*(?:\s+(?:GR\s+)?[A-Z0-9]+)?)', description_upper)
+                if astm_match:
+                    material_grade = astm_match.group(0).strip()
+            
+            # 사이즈 처리
+            main_size = str(row.get(mapped_columns.get('main_size', ''), ''))
+            red_size = str(row.get(mapped_columns.get('red_size', ''), ''))
+            
+            main_nom = main_size if main_size != 'nan' and main_size != '' else None
+            red_nom = red_size if red_size != 'nan' and red_size != '' else None
+            
+            if main_size != 'nan' and red_size != 'nan' and red_size != '':
+                size_spec = f"{main_size} x {red_size}"
+            elif main_size != 'nan' and main_size != '':
+                size_spec = main_size
+            else:
+                size_spec = ""
+            
+            # 길이 처리
+            length_raw = row.get(mapped_columns.get('length', ''), '')
+            length_value = None
+            if pd.notna(length_raw) and str(length_raw).strip() != '':
+                try:
+                    length_value = float(str(length_raw).strip())
+                except:
+                    length_value = None
+            
+            # 도면/라인 번호
+            dwg_name = row.get(mapped_columns.get('dwg_name', ''), '')
+            dwg_name = str(dwg_name).strip() if pd.notna(dwg_name) and str(dwg_name).strip() not in ['', 'nan', 'None'] else None
+            
+            line_num = row.get(mapped_columns.get('line_num', ''), '')
+            line_num = str(line_num).strip() if pd.notna(line_num) and str(line_num).strip() not in ['', 'nan', 'None'] else None
+            
+            if description and description not in ['nan', 'None', '']:
+                materials.append({
+                    'original_description': description,
+                    'quantity': quantity,
+                    'unit': "EA",
+                    'size_spec': size_spec,
+                    'main_nom': main_nom,
+                    'red_nom': red_nom,
+                    'material_grade': material_grade,
+                    'length': length_value,
+                    'dwg_name': dwg_name,
+                    'line_num': line_num,
+                    'line_number': index + 1,
+                    'row_number': index + 1
+                })
+        
+        return materials
+
+    @staticmethod
+    def _parse_inventor_bom(df: pd.DataFrame) -> List[Dict]:
+        """
+        [신규] 인벤터 추출 양식 파서
+        헤더: NO., NAME, Q'ty, LENGTH & THICKNESS, WEIGHT, DESCIPTION, REMARK
+        특징: Size 컬럼 부재, NAME에 주요 정보 포함
+        """
+        print("⚠️ [Inventor] 인벤터 양식 파서를 사용합니다.")
+        
+        # 컬럼명 전처리 (좌우 공백 제거 및 대문자화)
+        df.columns = df.columns.str.strip().str.upper()
+        
+        # 인벤터 전용 매핑
+        col_name = 'NAME'
+        col_qty = "Q'TY"
+        col_desc = 'DESCIPTION'  # 오타 그대로 반영
+        col_remark = 'REMARK'
+        col_length = 'LENGTH & THICKNESS' # 길이 정보가 여기 있을 수 있음
+        
+        materials = []
+        for index, row in df.iterrows():
+            # 1. 품명 (NAME 컬럼 우선 사용)
+            name_val = str(row.get(col_name, '')).strip()
+            desc_val = str(row.get(col_desc, '')).strip()
+            
+            # NAME과 DESCIPTION 병합 (필요시)
+            # 보통 인벤터에서 NAME이 'ADAPTER OD 1/4" x NPT(F) 1/2"' 같이 상세 스펙
+            # DESCIPTION은 'SS-400-7-8' 같은 자재 코드일 수 있음
+            # 일단 NAME을 메인 description으로 사용하고, DESCIPTION을 괄호에 추가
+            if desc_val and desc_val not in ['nan', 'None', '']:
+                full_description = f"{name_val} ({desc_val})"
+            else:
+                full_description = name_val
+            
+            if not full_description or full_description in ['nan', 'None', '']:
+                continue
+
+            # 2. 수량
+            qty_raw = row.get(col_qty, 0)
+            try:
+                quantity = float(qty_raw) if pd.notna(qty_raw) else 0
+            except:
+                quantity = 0
+
+            # 3. 사이즈 추출 (NAME 컬럼 분석)
+            # 패턴: 1/2", 1/4", 100A, 50A, 10x20 등
+            size_spec = ""
+            main_nom = None
+            red_nom = None
+            
+            # 인치/MM 사이즈 추출 시도
+            # 예: "ADAPTER OD 1/4" x NPT(F) 1/2"" -> 1/4" x 1/2"
+            # 예: "ELBOW 90D 100A" -> 100A
+            
+            # 인치 패턴 (1/2", 3/4" 등)
+            inch_sizes = re.findall(r'(\d+(?:/\d+)?)"', name_val)
+            # A단위 패턴 (100A, 50A 등)
+            a_sizes = re.findall(r'(\d+)A', name_val)
+            
+            if inch_sizes:
+                if len(inch_sizes) >= 2:
+                    main_nom = f'{inch_sizes[0]}"'
+                    red_nom = f'{inch_sizes[1]}"'
+                    size_spec = f'{main_nom} x {red_nom}'
+                else:
+                    main_nom = f'{inch_sizes[0]}"'
+                    size_spec = main_nom
+            elif a_sizes:
+                if len(a_sizes) >= 2:
+                    main_nom = f'{a_sizes[0]}A'
+                    red_nom = f'{a_sizes[1]}A'
+                    size_spec = f'{main_nom} x {red_nom}'
+                else:
+                    main_nom = f'{a_sizes[0]}A'
+                    size_spec = main_nom
+            
+            # 4. 재질 정보
+            material_grade = ""
+            # NAME이나 DESCIPTION에서 재질 키워드 찾기 (SS, SUS, A105 등)
+            combined_text = (full_description + " " + desc_val).upper()
+            if "SUS" in combined_text or "SS" in combined_text:
+                if "304" in combined_text: material_grade = "SUS304"
+                elif "316" in combined_text: material_grade = "SUS316"
+                else: material_grade = "SUS"
+            elif "A105" in combined_text:
+                material_grade = "A105"
+            
+            # 5. 길이 정보
+            length_value = None
+            length_raw = row.get(col_length, '')
+            # 값이 있고 숫자로 변환 가능하면 사용
+            if pd.notna(length_raw) and str(length_raw).strip():
+                try:
+                    # '100 mm' 등의 형식 처리 필요할 수 있음
+                    length_str = str(length_raw).lower().replace('mm', '').strip()
+                    length_value = float(length_str)
+                except:
+                    pass
+
+            materials.append({
+                'original_description': full_description,
+                'quantity': quantity,
+                'unit': "EA",
+                'size_spec': size_spec,
+                'main_nom': main_nom,
+                'red_nom': red_nom,
+                'material_grade': material_grade,
+                'length': length_value,
+                'dwg_name': None, # 인벤터 파일엔 도면명 컬럼이 없음
+                'line_num': None,
+                'line_number': index + 1,
+                'row_number': index + 1
+            })
+            
+        return materials

backend/app/services/exclude_classifier.py

@@ -8,11 +8,6 @@ from typing import Dict, List, Optional
 
 # ========== 제외 대상 타입 ==========
 EXCLUDE_TYPES = {
-    "WELD_GAP": {
-        "description_keywords": ["WELD GAP", "WELDING GAP", "GAP", "용접갭", "웰드갭"],
-        "characteristics": "용접 시 수축 고려용 계산 항목",
-        "reason": "실제 자재 아님 - 용접 갭 계산용"
-    },
     "CUTTING_LOSS": {
         "description_keywords": ["CUTTING LOSS", "CUT LOSS", "절단로스", "컷팅로스"],
         "characteristics": "절단 시 손실 고려용 계산 항목", 

backend/app/services/fitting_classifier.py

@@ -6,13 +6,18 @@ FITTING 분류 시스템 V2
 import re
 from typing import Dict, List, Optional
 from .material_classifier import classify_material, get_manufacturing_method_from_material
+from .classifier_constants import PRESSURE_PATTERNS, PRESSURE_RATINGS_SPECS, OLET_KEYWORDS
 
 # ========== FITTING 타입별 분류 (실제 BOM 기반) ==========
 FITTING_TYPES = {
     "ELBOW": {
         "dat_file_patterns": ["90L_", "45L_", "ELL_", "ELBOW_"],
-        "description_keywords": ["ELBOW", "ELL", "엘보"],
+        "description_keywords": ["ELBOW", "ELL", "엘보", "90 ELBOW", "45 ELBOW", "LR ELBOW", "SR ELBOW", "90 ELL", "45 ELL"],
         "subtypes": {
+            "90DEG_LONG_RADIUS": ["90 LR", "90° LR", "90DEG LR", "90도 장반경", "90 LONG RADIUS", "LR 90"],
+            "90DEG_SHORT_RADIUS": ["90 SR", "90° SR", "90DEG SR", "90도 단반경", "90 SHORT RADIUS", "SR 90"],
+            "45DEG_LONG_RADIUS": ["45 LR", "45° LR", "45DEG LR", "45도 장반경", "45 LONG RADIUS", "LR 45"],
+            "45DEG_SHORT_RADIUS": ["45 SR", "45° SR", "45DEG SR", "45도 단반경", "45 SHORT RADIUS", "SR 45"],
             "90DEG": ["90", "90°", "90DEG", "90도"],
             "45DEG": ["45", "45°", "45DEG", "45도"], 
             "LONG_RADIUS": ["LR", "LONG RADIUS", "장반경"],
@@ -98,11 +103,12 @@ FITTING_TYPES = {
     },
     
     "OLET": {
-        "dat_file_patterns": ["SOL_", "WOL_", "TOL_", "OLET_", "SOCK-O-LET", "WELD-O-LET"],
-        "description_keywords": ["OLET", "올렛", "O-LET", "SOCK-O-LET", "WELD-O-LET", "SOCKOLET", "WELDOLET", "THREAD-O-LET", "THREADOLET", "SOCKLET", "SOCKET"],
+        "dat_file_patterns": ["SOL_", "WOL_", "TOL_", "EOL_", "NOL_", "COL_", "OLET_", "SOCK-O-LET", "WELD-O-LET", "ELL-O-LET", "THREAD-O-LET", "ELB-O-LET", "NIP-O-LET", "COUP-O-LET"],
+        "description_keywords": OLET_KEYWORDS,
         "subtypes": {
             "SOCKOLET": ["SOCK-O-LET", "SOCKOLET", "SOL", "SOCK O-LET", "SOCKET-O-LET", "SOCKLET"],
             "WELDOLET": ["WELD-O-LET", "WELDOLET", "WOL", "WELD O-LET", "WELDING-O-LET"],
+            "ELLOLET": ["ELL-O-LET", "ELLOLET", "EOL", "ELL O-LET", "ELBOW-O-LET"],
             "THREADOLET": ["THREAD-O-LET", "THREADOLET", "TOL", "THREADED-O-LET"],
             "ELBOLET": ["ELB-O-LET", "ELBOLET", "EOL", "ELBOW-O-LET"],
             "NIPOLET": ["NIP-O-LET", "NIPOLET", "NOL", "NIPPLE-O-LET"],
@@ -164,24 +170,8 @@ CONNECTION_METHODS = {
 
 # ========== 압력 등급별 분류 ==========
 PRESSURE_RATINGS = {
-    "patterns": [
-        r"(\d+)LB",
-        r"CLASS\s*(\d+)",
-        r"CL\s*(\d+)",
-        r"(\d+)#",
-        r"(\d+)\s*LB"
-    ],
-    "standard_ratings": {
-        "150LB": {"max_pressure": "285 PSI", "common_use": "저압 일반용"},
-        "300LB": {"max_pressure": "740 PSI", "common_use": "중압용"},
-        "600LB": {"max_pressure": "1480 PSI", "common_use": "고압용"},
-        "900LB": {"max_pressure": "2220 PSI", "common_use": "고압용"},
-        "1500LB": {"max_pressure": "3705 PSI", "common_use": "고압용"},
-        "2500LB": {"max_pressure": "6170 PSI", "common_use": "초고압용"},
-        "3000LB": {"max_pressure": "7400 PSI", "common_use": "소구경 고압용"},
-        "6000LB": {"max_pressure": "14800 PSI", "common_use": "소구경 초고압용"},
-        "9000LB": {"max_pressure": "22200 PSI", "common_use": "소구경 극고압용"}
-    }
+    "patterns": PRESSURE_PATTERNS,
+    "standard_ratings": PRESSURE_RATINGS_SPECS
 }
 
 def classify_fitting(dat_file: str, description: str, main_nom: str,
@@ -203,7 +193,11 @@ def classify_fitting(dat_file: str, description: str, main_nom: str,
     dat_upper = dat_file.upper()
     
     # 1. 피팅 키워드 확인 (재질만 있어도 통합 분류기가 이미 피팅으로 분류했으므로 진행)
-    fitting_keywords = ['ELBOW', 'ELL', 'TEE', 'REDUCER', 'RED', 'CAP', 'NIPPLE', 'SWAGE', 'OLET', 'COUPLING', 'PLUG', 'SOCKLET', 'SOCKET', '엘보', '티', '리듀서', '캡', '니플', '스웨지', '올렛', '커플링', '플러그', 'SOCK-O-LET', 'WELD-O-LET', 'SOCKOLET', 'WELDOLET']
+    # OLET 키워드를 우선 확인하여 정확한 분류 수행
+    olet_keywords = OLET_KEYWORDS
+    has_olet_keyword = any(keyword in desc_upper or keyword in dat_upper for keyword in olet_keywords)
+    
+    fitting_keywords = ['ELBOW', 'ELL', 'TEE', 'REDUCER', 'RED', 'CAP', 'NIPPLE', 'SWAGE', 'COUPLING', 'PLUG', '엘보', '티', '리듀서', '캡', '니플', '스웨지', '올렛', '커플링', '플러그'] + olet_keywords
     has_fitting_keyword = any(keyword in desc_upper or keyword in dat_upper for keyword in fitting_keywords)
     
     # 피팅 재질 확인 (A234, A403, A420)
@@ -239,71 +233,35 @@ def classify_fitting(dat_file: str, description: str, main_nom: str,
     )
     
     # 6. 최종 결과 조합
+    # --- 계장용(Instrument/Swagelok) 피팅 감지 로직 추가 ---
+    instrument_keywords = ["SWAGELOK", "DK-LOK", "TUBE FITTING", "UNION", "FERRULE", "MALE CONNECTOR", "FEMALE CONNECTOR"]
+    is_instrument = any(kw in desc_upper for kw in instrument_keywords)
+    
+    if is_instrument:
+        fitting_type_result["category"] = "INSTRUMENT_FITTING"
+        if "SWAGELOK" in desc_upper: fitting_type_result["brand"] = "SWAGELOK"
+        
+        # Tube OD 추출 (예: 1/4", 6MM, 12MM)
+        tube_match = re.search(r'(\d+(?:/\d+)?)\s*(?:\"|INCH|MM)\s*(?:OD|TUBE)', desc_upper)
+        if tube_match:
+            fitting_type_result["tube_od"] = tube_match.group(0)
+
     return {
         "category": "FITTING",
-        
-        # 재질 정보 (공통 모듈)
-        "material": {
-            "standard": material_result.get('standard', 'UNKNOWN'),
-            "grade": material_result.get('grade', 'UNKNOWN'),
-            "material_type": material_result.get('material_type', 'UNKNOWN'),
-            "confidence": material_result.get('confidence', 0.0)
-        },
-        
-        # 피팅 특화 정보
-        "fitting_type": {
-            "type": fitting_type_result.get('type', 'UNKNOWN'),
-            "subtype": fitting_type_result.get('subtype', 'UNKNOWN'),
-            "confidence": fitting_type_result.get('confidence', 0.0),
-            "evidence": fitting_type_result.get('evidence', [])
-        },
-        
-        "connection_method": {
-            "method": connection_result.get('method', 'UNKNOWN'),
-            "confidence": connection_result.get('confidence', 0.0),
-            "matched_code": connection_result.get('matched_code', ''),
-            "size_range": connection_result.get('size_range', ''),
-            "pressure_range": connection_result.get('pressure_range', '')
-        },
-        
-        "pressure_rating": {
-            "rating": pressure_result.get('rating', 'UNKNOWN'),
-            "confidence": pressure_result.get('confidence', 0.0),
-            "max_pressure": pressure_result.get('max_pressure', ''),
-            "common_use": pressure_result.get('common_use', '')
-        },
-        
-        "manufacturing": {
-            "method": manufacturing_result.get('method', 'UNKNOWN'),
-            "confidence": manufacturing_result.get('confidence', 0.0),
-            "evidence": manufacturing_result.get('evidence', []),
-            "characteristics": manufacturing_result.get('characteristics', '')
-        },
-        
-        "size_info": {
-            "main_size": main_nom,
-            "reduced_size": red_nom,
-            "size_description": format_fitting_size(main_nom, red_nom),
-            "requires_two_sizes": fitting_type_result.get('requires_two_sizes', False)
-        },
-        
-        "schedule_info": {
-            "schedule": schedule_result.get('schedule', 'UNKNOWN'),
-            "schedule_number": schedule_result.get('schedule_number', ''),
-            "wall_thickness": schedule_result.get('wall_thickness', ''),
-            "pressure_class": schedule_result.get('pressure_class', ''),
-            "confidence": schedule_result.get('confidence', 0.0)
-        },
-        
-        # 전체 신뢰도
+        "fitting_type": fitting_type_result,
+        "connection_method": connection_result,
+        "pressure_rating": pressure_result,
+        "schedule": schedule_result,
+        "manufacturing": manufacturing_result,
         "overall_confidence": calculate_fitting_confidence({
-            "material": material_result.get('confidence', 0),
-            "fitting_type": fitting_type_result.get('confidence', 0),
-            "connection": connection_result.get('confidence', 0),
-            "pressure": pressure_result.get('confidence', 0)
+            "material": material_result.get("confidence", 0),
+            "fitting_type": fitting_type_result.get("confidence", 0),
+            "connection": connection_result.get("confidence", 0),
+            "pressure": pressure_result.get("confidence", 0)
         })
     }
 
+
 def analyze_size_pattern_for_fitting_type(description: str, main_nom: str, red_nom: str = None) -> Dict:
     """
     실제 BOM 패턴 기반 TEE vs REDUCER 구분
@@ -428,12 +386,28 @@ def classify_fitting_type(dat_file: str, description: str,
     dat_upper = dat_file.upper()
     desc_upper = description.upper()
     
-    # 0. 사이즈 패턴 분석으로 TEE vs REDUCER 구분 (최우선)
+    # 0. OLET 우선 확인 (ELL과의 혼동 방지)
+    olet_specific_keywords = OLET_KEYWORDS
+    for keyword in olet_specific_keywords:
+        if keyword in desc_upper or keyword in dat_upper:
+            subtype_result = classify_fitting_subtype(
+                "OLET", desc_upper, main_nom, red_nom, FITTING_TYPES["OLET"]
+            )
+            return {
+                "type": "OLET",
+                "subtype": subtype_result["subtype"],
+                "confidence": 0.95,
+                "evidence": [f"OLET_PRIORITY_KEYWORD: {keyword}"],
+                "subtype_confidence": subtype_result["confidence"],
+                "requires_two_sizes": FITTING_TYPES["OLET"].get("requires_two_sizes", False)
+            }
+    
+    # 1. 사이즈 패턴 분석으로 TEE vs REDUCER 구분
     size_pattern_result = analyze_size_pattern_for_fitting_type(desc_upper, main_nom, red_nom)
     if size_pattern_result.get("confidence", 0) > 0.85:
         return size_pattern_result
     
-    # 1. DAT_FILE 패턴으로 1차 분류 (가장 신뢰도 높음)
+    # 2. DAT_FILE 패턴으로 1차 분류 (가장 신뢰도 높음)
     for fitting_type, type_data in FITTING_TYPES.items():
         for pattern in type_data["dat_file_patterns"]:
             if pattern in dat_upper:
@@ -450,7 +424,7 @@ def classify_fitting_type(dat_file: str, description: str,
                     "requires_two_sizes": type_data.get("requires_two_sizes", False)
                 }
     
-    # 2. DESCRIPTION 키워드로 2차 분류
+    # 3. DESCRIPTION 키워드로 2차 분류
     for fitting_type, type_data in FITTING_TYPES.items():
         for keyword in type_data["description_keywords"]:
             if keyword in desc_upper:
@@ -467,7 +441,7 @@ def classify_fitting_type(dat_file: str, description: str,
                     "requires_two_sizes": type_data.get("requires_two_sizes", False)
                 }
     
-    # 3. 분류 실패
+    # 4. 분류 실패
     return {
         "type": "UNKNOWN",
         "subtype": "UNKNOWN",
@@ -480,18 +454,77 @@ def classify_fitting_subtype(fitting_type: str, description: str,
                            main_nom: str, red_nom: str, type_data: Dict) -> Dict:
     """피팅 서브타입 분류"""
     
+    desc_upper = description.upper()
     subtypes = type_data.get("subtypes", {})
     
-    # 1. 키워드 기반 서브타입 분류 (우선)
+    # 1. 키워드 기반 서브타입 분류 (우선) - 대소문자 구분 없이
     for subtype, keywords in subtypes.items():
         for keyword in keywords:
-            if keyword in description:
+            if keyword.upper() in desc_upper:
                 return {
                     "subtype": subtype,
                     "confidence": 0.9,
                     "evidence": [f"SUBTYPE_KEYWORD: {keyword}"]
                 }
     
+    # 1.5. ELBOW 특별 처리 - 조합 키워드 우선 확인
+    if fitting_type == "ELBOW":
+        # 90도 + 반경 조합
+        if ("90" in desc_upper or "90°" in desc_upper or "90DEG" in desc_upper):
+            if ("LR" in desc_upper or "LONG RADIUS" in desc_upper or "장반경" in desc_upper):
+                return {
+                    "subtype": "90DEG_LONG_RADIUS",
+                    "confidence": 0.95,
+                    "evidence": ["90DEG + LONG_RADIUS"]
+                }
+            elif ("SR" in desc_upper or "SHORT RADIUS" in desc_upper or "단반경" in desc_upper):
+                return {
+                    "subtype": "90DEG_SHORT_RADIUS", 
+                    "confidence": 0.95,
+                    "evidence": ["90DEG + SHORT_RADIUS"]
+                }
+            else:
+                return {
+                    "subtype": "90DEG",
+                    "confidence": 0.85,
+                    "evidence": ["90DEG_DETECTED"]
+                }
+        
+        # 45도 + 반경 조합
+        elif ("45" in desc_upper or "45°" in desc_upper or "45DEG" in desc_upper):
+            if ("LR" in desc_upper or "LONG RADIUS" in desc_upper or "장반경" in desc_upper):
+                return {
+                    "subtype": "45DEG_LONG_RADIUS",
+                    "confidence": 0.95,
+                    "evidence": ["45DEG + LONG_RADIUS"]
+                }
+            elif ("SR" in desc_upper or "SHORT RADIUS" in desc_upper or "단반경" in desc_upper):
+                return {
+                    "subtype": "45DEG_SHORT_RADIUS",
+                    "confidence": 0.95,
+                    "evidence": ["45DEG + SHORT_RADIUS"]
+                }
+            else:
+                return {
+                    "subtype": "45DEG",
+                    "confidence": 0.85,
+                    "evidence": ["45DEG_DETECTED"]
+                }
+        
+        # 반경만 있는 경우 (기본 90도 가정)
+        elif ("LR" in desc_upper or "LONG RADIUS" in desc_upper or "장반경" in desc_upper):
+            return {
+                "subtype": "90DEG_LONG_RADIUS",
+                "confidence": 0.8,
+                "evidence": ["LONG_RADIUS_DEFAULT_90DEG"]
+            }
+        elif ("SR" in desc_upper or "SHORT RADIUS" in desc_upper or "단반경" in desc_upper):
+            return {
+                "subtype": "90DEG_SHORT_RADIUS",
+                "confidence": 0.8,
+                "evidence": ["SHORT_RADIUS_DEFAULT_90DEG"]
+            }
+    
     # 2. 사이즈 분석이 필요한 경우 (TEE, REDUCER 등)
     if type_data.get("size_analysis"):
         if red_nom and str(red_nom).strip() and red_nom != main_nom:

backend/app/services/flange_classifier.py

@@ -182,6 +182,14 @@ def classify_flange(dat_file: str, description: str, main_nom: str,
     dat_upper = dat_file.upper()
     
     # 1. 플랜지 키워드 확인 (재질만 있어도 통합 분류기가 이미 플랜지로 분류했으므로 진행)
+    # 사이트 글라스와 스트레이너는 밸브로 분류되어야 함
+    if 'SIGHT GLASS' in desc_upper or 'STRAINER' in desc_upper or '사이트글라스' in desc_upper or '스트레이너' in desc_upper:
+        return {
+            "category": "VALVE",
+            "overall_confidence": 1.0,
+            "reason": "SIGHT GLASS 또는 STRAINER는 밸브로 분류"
+        }
+    
     flange_keywords = ['FLG', 'FLANGE', '플랜지', 'ORIFICE', 'SPECTACLE', 'PADDLE', 'SPACER']
     has_flange_keyword = any(keyword in desc_upper or keyword in dat_upper for keyword in flange_keywords)
     

backend/app/services/integrated_classifier.py

@@ -6,71 +6,14 @@
 import re
 from typing import Dict, List, Optional, Tuple
 from .fitting_classifier import classify_fitting
-
-# Level 1: 명확한 타입 키워드 (최우선)
-LEVEL1_TYPE_KEYWORDS = {
-    "BOLT": ["FLANGE BOLT", "U-BOLT", "U BOLT", "BOLT", "STUD", "NUT", "SCREW", "WASHER", "볼트", "너트", "스터드", "나사", "와셔", "유볼트"],
-    "VALVE": ["VALVE", "GATE", "BALL", "GLOBE", "CHECK", "BUTTERFLY", "NEEDLE", "RELIEF", "밸브", "게이트", "볼", "글로브", "체크", "버터플라이", "니들", "릴리프"],
-    "FLANGE": ["FLG", "FLANGE", "플랜지", "프랜지", "ORIFICE", "SPECTACLE", "PADDLE", "SPACER", "BLIND"],
-    "PIPE": ["PIPE", "TUBE", "파이프", "배관", "SMLS", "SEAMLESS"],
-    "FITTING": ["ELBOW", "ELL", "TEE", "REDUCER", "RED", "CAP", "COUPLING", "NIPPLE", "SWAGE", "OLET", "PLUG", "엘보", "티", "리듀서", "캡", "니플", "커플링", "플러그", "CONC", "ECC", "SOCK-O-LET", "WELD-O-LET", "SOCKOLET", "WELDOLET", "THREADOLET"],
-    "GASKET": ["GASKET", "GASK", "가스켓", "SWG", "SPIRAL"],
-    "INSTRUMENT": ["GAUGE", "TRANSMITTER", "SENSOR", "THERMOMETER", "계기", "게이지", "트랜스미터", "센서"],
-    "SUPPORT": ["URETHANE BLOCK", "URETHANE", "BLOCK SHOE", "CLAMP", "SUPPORT", "HANGER", "SPRING", "우레탄", "블록", "클램프", "서포트", "행거", "스프링"]
-}
-
-# Level 2: 서브타입 키워드 (구체화)
-LEVEL2_SUBTYPE_KEYWORDS = {
-    "VALVE": {
-        "GATE": ["GATE VALVE", "GATE", "게이트 밸브"],
-        "BALL": ["BALL VALVE", "BALL", "볼 밸브"],
-        "GLOBE": ["GLOBE VALVE", "GLOBE", "글로브 밸브"],
-        "CHECK": ["CHECK VALVE", "CHECK", "체크 밸브", "역지 밸브"]
-    },
-    "FLANGE": {
-        "WELD_NECK": ["WELD NECK", "WN", "웰드넥"],
-        "SLIP_ON": ["SLIP ON", "SO", "슬립온"],
-        "BLIND": ["BLIND", "BL", "막음", "차단"],
-        "SOCKET_WELD": ["SOCKET WELD", "소켓웰드"]
-    },
-    "BOLT": {
-        "HEX_BOLT": ["HEX BOLT", "HEXAGON", "육각 볼트"],
-        "STUD_BOLT": ["STUD BOLT", "STUD", "스터드 볼트"],
-        "U_BOLT": ["U-BOLT", "U BOLT", "유볼트"]
-    },
-    "SUPPORT": {
-        "URETHANE_BLOCK": ["URETHANE BLOCK", "BLOCK SHOE", "우레탄 블록"],
-        "CLAMP": ["CLAMP", "클램프"],
-        "HANGER": ["HANGER", "SUPPORT", "행거", "서포트"],
-        "SPRING": ["SPRING", "스프링"]
-    }
-}
-
-# Level 3: 연결/압력 키워드 (공용)
-LEVEL3_CONNECTION_KEYWORDS = {
-    "SW": ["SW", "SOCKET WELD", "소켓웰드"],
-    "THD": ["THD", "THREADED", "NPT", "나사"],
-    "FL": ["FL", "FLANGED", "플랜지형"],
-    "BW": ["BW", "BUTT WELD", "맞대기용접"]
-}
-
-LEVEL3_PRESSURE_KEYWORDS = ["150LB", "300LB", "600LB", "900LB", "1500LB", "2500LB", "3000LB", "6000LB"]
-
-# Level 4: 재질 키워드 (최후 판단)
-LEVEL4_MATERIAL_KEYWORDS = {
-    "PIPE": ["A106", "A333", "A312", "A53"],
-    "FITTING": ["A234", "A403", "A420"],
-    "FLANGE": ["A182", "A350"],  # A105 제거 (범용 재질로 이동)
-    "VALVE": ["A216", "A217", "A351", "A352"],
-    "BOLT": ["A193", "A194", "A320", "A325", "A490"]
-}
-
-# 범용 재질 (여러 타입에 사용 가능)
-GENERIC_MATERIALS = {
-    "A105": ["VALVE", "FLANGE", "FITTING"],  # 우선순위 순서
-    "316": ["VALVE", "FLANGE", "FITTING", "PIPE", "BOLT"],
-    "304": ["VALVE", "FLANGE", "FITTING", "PIPE", "BOLT"]
-}
+from .classifier_constants import (
+    LEVEL1_TYPE_KEYWORDS,
+    LEVEL2_SUBTYPE_KEYWORDS,
+    LEVEL3_CONNECTION_KEYWORDS,
+    LEVEL3_PRESSURE_KEYWORDS,
+    LEVEL4_MATERIAL_KEYWORDS,
+    GENERIC_MATERIALS
+)
 
 def classify_material_integrated(description: str, main_nom: str = "", 
                                 red_nom: str = "", length: float = None) -> Dict:
@@ -90,26 +33,61 @@ def classify_material_integrated(description: str, main_nom: str = "",
     desc_upper = description.upper()
     
     # 최우선: SPECIAL 키워드 확인 (도면 업로드가 필요한 특수 자재)
-    special_keywords = ['SPECIAL', '스페셜', 'SPEC', 'SPL']
-    for keyword in special_keywords:
-        if keyword in desc_upper:
-            return {
-                "category": "SPECIAL",
-                "confidence": 1.0,
-                "evidence": [f"SPECIAL_KEYWORD: {keyword}"],
-                "classification_level": "LEVEL0_SPECIAL",
-                "reason": f"스페셜 키워드 발견: {keyword}"
-            }
-    
-    # U-BOLT 및 관련 부품 우선 확인 (BOLT 카테고리보다 먼저)
-    if ('U-BOLT' in desc_upper or 'U BOLT' in desc_upper or '유볼트' in desc_upper or
-        'URETHANE BLOCK' in desc_upper or 'BLOCK SHOE' in desc_upper or '우레탄' in desc_upper):
+    # SPECIAL이 포함된 경우 (단, SPECIFICATION은 제외)
+    if 'SPECIAL' in desc_upper and 'SPECIFICATION' not in desc_upper:
         return {
-            "category": "U_BOLT",
+            "category": "SPECIAL",
             "confidence": 1.0,
-            "evidence": ["U_BOLT_SYSTEM_KEYWORD"],
-            "classification_level": "LEVEL0_U_BOLT",
-            "reason": "U-BOLT 시스템 키워드 발견"
+            "evidence": ["SPECIAL_KEYWORD"],
+            "classification_level": "LEVEL0_SPECIAL",
+            "reason": "SPECIAL 키워드 발견"
+        }
+    
+    # 스페셜 관련 한글 키워드
+    if '스페셜' in desc_upper or 'SPL' in desc_upper:
+        return {
+            "category": "SPECIAL",
+            "confidence": 1.0,
+            "evidence": ["SPECIAL_KEYWORD"],
+            "classification_level": "LEVEL0_SPECIAL",
+            "reason": "스페셜 키워드 발견"
+        }
+    
+    
+    # VALVE 카테고리 우선 확인 (SIGHT GLASS, STRAINER)
+    if ('SIGHT GLASS' in desc_upper or 'STRAINER' in desc_upper or 
+        '사이트글라스' in desc_upper or '스트레이너' in desc_upper):
+        return {
+            "category": "VALVE",
+            "confidence": 1.0,
+            "evidence": ["VALVE_SPECIAL_KEYWORD"],
+            "classification_level": "LEVEL0_VALVE",
+            "reason": "SIGHT GLASS 또는 STRAINER 키워드 발견"
+        }
+    
+    # SUPPORT 카테고리 우선 확인 (BOLT 카테고리보다 먼저)
+    # U-BOLT, CLAMP, URETHANE BLOCK 등
+    if ('U-BOLT' in desc_upper or 'U BOLT' in desc_upper or '유볼트' in desc_upper or
+        'URETHANE BLOCK' in desc_upper or 'BLOCK SHOE' in desc_upper or '우레탄' in desc_upper or
+        'CLAMP' in desc_upper or '클램프' in desc_upper or 'PIPE CLAMP' in desc_upper):
+        return {
+            "category": "SUPPORT",
+            "confidence": 1.0,
+            "evidence": ["SUPPORT_SYSTEM_KEYWORD"],
+            "classification_level": "LEVEL0_SUPPORT",
+            "reason": "SUPPORT 시스템 키워드 발견"
+        }
+        
+    # [신규] Swagelok 스타일 파트 넘버 패턴 확인
+    # 예: SS-400-1-4, SS-810-6, B-400-9, SS-1610-P
+    swagelok_pattern = r'\b(SS|S|B|A|M)-([0-9]{3,4}|[0-9]+M[0-9]*)-([0-9A-Z])'
+    if re.search(swagelok_pattern, desc_upper):
+        return {
+            "category": "TUBE_FITTING",
+            "confidence": 0.98,
+            "evidence": ["SWAGELOK_PART_NO"],
+            "classification_level": "LEVEL0_PARTNO",
+            "reason": "Swagelok 스타일 파트넘버 감지"
         }
     
     # 쉼표로 구분된 각 부분을 별도로 체크 (예: "NIPPLE, SMLS, SCH 80")
@@ -117,24 +95,81 @@ def classify_material_integrated(description: str, main_nom: str = "",
     
     # 1단계: Level 1 키워드로 타입 식별
     detected_types = []
-    for material_type, keywords in LEVEL1_TYPE_KEYWORDS.items():
-        type_found = False
-        # 긴 키워드부터 확인 (FLANGE BOLT가 FLANGE보다 먼저 매칭되도록)
-        sorted_keywords = sorted(keywords, key=len, reverse=True)
-        for keyword in sorted_keywords:
-            # 전체 문자열에서 찾기
-            if keyword in desc_upper:
-                detected_types.append((material_type, keyword))
-                type_found = True
-                break
-            # 각 부분에서도 정확히 매칭되는지 확인
-            for part in desc_parts:
-                if keyword == part or keyword in part:
+    
+    # 특별 우선순위: REDUCING FLANGE 먼저 확인 (강화된 로직)
+    reducing_flange_patterns = [
+        "REDUCING FLANGE", "RED FLANGE", "REDUCER FLANGE", 
+        "REDUCING FLG", "RED FLG", "REDUCER FLG"
+    ]
+    
+    # FLANGE와 REDUCING/RED/REDUCER가 함께 있는 경우도 확인
+    has_flange = any(flange_word in desc_upper for flange_word in ["FLANGE", "FLG"])
+    has_reducing = any(red_word in desc_upper for red_word in ["REDUCING", "RED", "REDUCER"])
+    
+    # 직접 패턴 매칭 또는 FLANGE + REDUCING 조합
+    reducing_flange_detected = False
+    for pattern in reducing_flange_patterns:
+        if pattern in desc_upper:
+            detected_types.append(("FLANGE", "REDUCING FLANGE"))
+            reducing_flange_detected = True
+            break
+    
+    # FLANGE와 REDUCING이 모두 있으면 REDUCING FLANGE로 분류
+    if not reducing_flange_detected and has_flange and has_reducing:
+        detected_types.append(("FLANGE", "REDUCING FLANGE"))
+        reducing_flange_detected = True
+    
+    # REDUCING FLANGE가 감지되지 않은 경우에만 일반 키워드 검사
+    if not reducing_flange_detected:
+        for material_type, keywords in LEVEL1_TYPE_KEYWORDS.items():
+            type_found = False
+            # 긴 키워드부터 확인 (FLANGE BOLT가 FLANGE보다 먼저 매칭되도록)
+            sorted_keywords = sorted(keywords, key=len, reverse=True)
+            for keyword in sorted_keywords:
+                # [강화된 로직] 짧은 키워드나 중의적 키워드에 대한 엄격한 검사
+                is_strict_match = True
+                
+                # 1. "PL" 키워드 검사 (PLATE)
+                if keyword == "PL":
+                    # 단독 단어이거나 숫자 뒤에 붙는 경우만 허용 (예: 10PL, 10 PL)
+                    # COUPLING, NIPPLE, PLUG 등에 포함된 PL은 제외
+                    pl_pattern = r'(\b|\d)PL\b'
+                    if not re.search(pl_pattern, desc_upper):
+                        is_strict_match = False
+                
+                # 2. "ANGLE" 키워드 검사 (STRUCTURAL)
+                elif keyword == "ANGLE" or keyword == "앵글":
+                    # VALVE와 함께 쓰이면 제외 (ANGLE VALVE)
+                    if "VALVE" in desc_upper or "밸브" in desc_upper:
+                        is_strict_match = False
+                        
+                # 3. "UNION" 키워드 검사 (FITTING)
+                elif keyword == "UNION":
+                    # 계장용인지 파이프용인지 구분은 fitting_classifier에서 하되,
+                    # 여기서는 일단 FITTING으로 잡히도록 둠.
+                    pass
+                
+                # 4. "BEAM" 키워드 검사 (STRUCTURAL)
+                elif keyword == "BEAM":
+                     # "BEAM CLAMP" 같은 경우 SUPPORT로 가야 함 (SUPPORT가 우선순위 높으므로 괜찮음)
+                     pass
+
+                if not is_strict_match:
+                    continue
+
+                # 전체 문자열에서 찾기
+                if keyword in desc_upper:
                     detected_types.append((material_type, keyword))
                     type_found = True
                     break
-            if type_found:
-                break
+                # 각 부분에서도 정확히 매칭되는지 확인
+                for part in desc_parts:
+                    if keyword == part or keyword in part:
+                        detected_types.append((material_type, keyword))
+                        type_found = True
+                        break
+                if type_found:
+                    break
     
     # 2단계: 복수 타입 감지 시 Level 2로 구체화
     if len(detected_types) > 1:
@@ -247,7 +282,7 @@ def classify_material_integrated(description: str, main_nom: str = "",
     
     # 분류 실패
     return {
-        "category": "UNKNOWN",
+        "category": "UNCLASSIFIED",
         "confidence": 0.0,
         "evidence": ["NO_CLASSIFICATION_POSSIBLE"],
         "classification_level": "NONE"
@@ -263,4 +298,4 @@ def should_exclude_material(description: str) -> bool:
     ]
     
     desc_upper = description.upper()
-    return any(keyword in desc_upper for keyword in exclude_keywords) 
+    return any(keyword in desc_upper for keyword in exclude_keywords)

backend/app/services/material_service.py

@@ -0,0 +1,592 @@
+
+from sqlalchemy.orm import Session
+from sqlalchemy import text
+from typing import List, Dict, Optional
+import json
+from datetime import datetime
+
+from app.services.integrated_classifier import classify_material_integrated, should_exclude_material
+from app.services.bolt_classifier import classify_bolt
+from app.services.flange_classifier import classify_flange
+from app.services.fitting_classifier import classify_fitting
+from app.services.gasket_classifier import classify_gasket
+from app.services.instrument_classifier import classify_instrument
+from app.services.valve_classifier import classify_valve
+from app.services.support_classifier import classify_support
+from app.services.plate_classifier import classify_plate
+from app.services.structural_classifier import classify_structural
+from app.services.pipe_classifier import classify_pipe_for_purchase, extract_end_preparation_info
+from app.services.material_grade_extractor import extract_full_material_grade
+
+class MaterialService:
+    """자재 처리 및 저장을 담당하는 서비스"""
+
+    @staticmethod
+    def process_and_save_materials(
+        db: Session,
+        file_id: int,
+        materials_data: List[Dict],
+        revision_comparison: Optional[Dict] = None,
+        parent_file_id: Optional[int] = None,
+        purchased_materials_map: Optional[Dict] = None
+    ) -> int:
+        """
+        자재 목록을 분류하고 DB에 저장합니다.
+        
+        Args:
+            db: DB 세션
+            file_id: 파일 ID
+            materials_data: 파싱된 자재 데이터 목록
+            revision_comparison: 리비전 비교 결과
+            parent_file_id: 이전 리비전 파일 ID
+            purchased_materials_map: 구매 확정된 자재 매핑 정보
+            
+        Returns:
+            저장된 자재 수
+        """
+        materials_inserted = 0
+        
+        # 변경/신규 자재 키 집합 (리비전 추적용)
+        changed_materials_keys = set()
+        new_materials_keys = set()
+        
+        # 리비전 업로드인 경우 변경사항 분석
+        if parent_file_id is not None:
+            MaterialService._analyze_changes(
+                db, parent_file_id, materials_data, 
+                changed_materials_keys, new_materials_keys
+            )
+        
+        # 변경 없는 자재 (확정된 자재) 먼저 처리
+        if revision_comparison and revision_comparison.get("has_previous_confirmation", False):
+            unchanged_materials = revision_comparison.get("unchanged_materials", [])
+            for material_data in unchanged_materials:
+                MaterialService._save_unchanged_material(db, file_id, material_data)
+                materials_inserted += 1
+                
+        # 분류가 필요한 자재 처리 (신규 또는 변경된 자재)
+        # revision_comparison에서 필터링된 목록이 있으면 그것을 사용, 아니면 전체
+        materials_to_classify = materials_data
+        if revision_comparison and revision_comparison.get("materials_to_classify"):
+            materials_to_classify = revision_comparison.get("materials_to_classify")
+            
+        print(f"🔧 자재 분류 및 저장 시작: {len(materials_to_classify)}개")
+        
+        for material_data in materials_to_classify:
+            MaterialService._classify_and_save_single_material(
+                db, file_id, material_data, 
+                changed_materials_keys, new_materials_keys,
+                purchased_materials_map
+            )
+            materials_inserted += 1
+            
+        return materials_inserted
+
+    @staticmethod
+    def _analyze_changes(db: Session, parent_file_id: int, materials_data: List[Dict], 
+                        changed_keys: set, new_keys: set):
+        """이전 리비전과 비교하여 변경/신규 자재를 식별합니다."""
+        try:
+            prev_materials_query = text("""
+                SELECT original_description, size_spec, material_grade, main_nom, 
+                       drawing_name, line_no, quantity
+                FROM materials
+                WHERE file_id = :parent_file_id
+            """)
+            prev_materials = db.execute(prev_materials_query, {"parent_file_id": parent_file_id}).fetchall()
+            
+            prev_dict = {}
+            for pm in prev_materials:
+                key = MaterialService._generate_material_key(
+                    pm.drawing_name, pm.line_no, pm.original_description, 
+                    pm.size_spec, pm.material_grade
+                )
+                prev_dict[key] = float(pm.quantity) if pm.quantity else 0
+            
+            for mat in materials_data:
+                new_key = MaterialService._generate_material_key(
+                    mat.get("dwg_name"), mat.get("line_num"), mat["original_description"],
+                    mat.get("size_spec"), mat.get("material_grade")
+                )
+                
+                if new_key in prev_dict:
+                    if abs(prev_dict[new_key] - float(mat.get("quantity", 0))) > 0.001:
+                        changed_keys.add(new_key)
+                else:
+                    new_keys.add(new_key)
+                    
+        except Exception as e:
+            print(f"❌ 변경사항 분석 실패: {e}")
+
+    @staticmethod
+    def _generate_material_key(dwg, line, desc, size, grade):
+        """자재 고유 키 생성"""
+        parts = []
+        if dwg: parts.append(str(dwg))
+        elif line: parts.append(str(line))
+        
+        parts.append(str(desc))
+        parts.append(str(size or ''))
+        parts.append(str(grade or ''))
+        return "|".join(parts)
+
+    @staticmethod
+    def _save_unchanged_material(db: Session, file_id: int, material_data: Dict):
+        """변경 없는(확정된) 자재 저장"""
+        previous_item = material_data.get("previous_item", {})
+        
+        query = text("""
+            INSERT INTO materials (
+                file_id, original_description, classified_category, confidence,
+                quantity, unit, size_spec, material_grade, specification,
+                reused_from_confirmation, created_at
+            ) VALUES (
+                :file_id, :desc, :category, 1.0,
+                :qty, :unit, :size, :grade, :spec,
+                TRUE, :created_at
+            )
+        """)
+        
+        db.execute(query, {
+            "file_id": file_id,
+            "desc": material_data["original_description"],
+            "category": previous_item.get("category", "UNCLASSIFIED"),
+            "qty": material_data["quantity"],
+            "unit": material_data.get("unit", "EA"),
+            "size": material_data.get("size_spec", ""),
+            "grade": previous_item.get("material", ""),
+            "spec": previous_item.get("specification", ""),
+            "created_at": datetime.now()
+        })
+
+    @staticmethod
+    def _classify_and_save_single_material(
+        db: Session, file_id: int, material_data: Dict,
+        changed_keys: set, new_keys: set, purchased_map: Optional[Dict]
+    ):
+        """단일 자재 분류 및 저장 (상세 정보 포함)"""
+        description = material_data["original_description"]
+        main_nom = material_data.get("main_nom", "")
+        red_nom = material_data.get("red_nom", "")
+        length_val = material_data.get("length")
+        
+        # 1. 통합 분류
+        integrated_result = classify_material_integrated(description, main_nom, red_nom, length_val)
+        classification_result = integrated_result
+        
+        # 2. 상세 분류
+        if not should_exclude_material(description):
+            category = integrated_result.get('category')
+            if category == "PIPE":
+                classification_result = classify_pipe_for_purchase("", description, main_nom, length_val)
+            elif category == "FITTING":
+                classification_result = classify_fitting("", description, main_nom, red_nom)
+            elif category == "FLANGE":
+                classification_result = classify_flange("", description, main_nom, red_nom)
+            elif category == "VALVE":
+                classification_result = classify_valve("", description, main_nom)
+            elif category == "BOLT":
+                classification_result = classify_bolt("", description, main_nom)
+            elif category == "GASKET":
+                classification_result = classify_gasket("", description, main_nom)
+            elif category == "INSTRUMENT":
+                classification_result = classify_instrument("", description, main_nom)
+            elif category == "SUPPORT":
+                classification_result = classify_support("", description, main_nom)
+            elif category == "PLATE":
+                classification_result = classify_plate("", description, main_nom)
+            elif category == "STRUCTURAL":
+                classification_result = classify_structural("", description, main_nom)
+                
+            # 신뢰도 조정
+            if integrated_result.get('confidence', 0) < 0.5:
+                classification_result['overall_confidence'] = min(
+                    classification_result.get('overall_confidence', 1.0),
+                    integrated_result.get('confidence', 0.0) + 0.2
+                )
+        else:
+             classification_result = {"category": "EXCLUDE", "overall_confidence": 0.95}
+
+        # 3. 구매 확정 정보 상속 확인
+        is_purchase_confirmed = False
+        purchase_confirmed_at = None
+        purchase_confirmed_by = None
+        
+        if purchased_map:
+            key = f"{description.strip().upper()}|{material_data.get('size_spec', '')}"
+            if key in purchased_map:
+                info = purchased_map[key]
+                is_purchase_confirmed = True
+                purchase_confirmed_at = info.get("purchase_confirmed_at")
+                purchase_confirmed_by = info.get("purchase_confirmed_by")
+
+        # 4. 자재 기본 정보 저장
+        full_grade = extract_full_material_grade(description) or material_data.get("material_grade", "")
+        
+        insert_query = text("""
+            INSERT INTO materials (
+                file_id, original_description, quantity, unit, size_spec,
+                main_nom, red_nom, material_grade, full_material_grade, line_number, row_number,
+                classified_category, classification_confidence, is_verified,
+                drawing_name, line_no, created_at,
+                purchase_confirmed, purchase_confirmed_at, purchase_confirmed_by,
+                revision_status
+            ) VALUES (
+                :file_id, :desc, :qty, :unit, :size,
+                :main, :red, :grade, :full_grade, :line_num, :row_num,
+                :category, :confidence, :verified,
+                :dwg, :line, :created_at,
+                :confirmed, :confirmed_at, :confirmed_by,
+                :status
+            ) RETURNING id
+        """)
+        
+        # 리비전 상태 결정
+        mat_key = MaterialService._generate_material_key(
+            material_data.get("dwg_name"), material_data.get("line_num"), description,
+            material_data.get("size_spec"), material_data.get("material_grade")
+        )
+        rev_status = 'changed' if mat_key in changed_keys else ('active' if mat_key in new_keys else None)
+        
+        result = db.execute(insert_query, {
+            "file_id": file_id,
+            "desc": description,
+            "qty": material_data["quantity"],
+            "unit": material_data["unit"],
+            "size": material_data.get("size_spec", ""),
+            "main": main_nom,
+            "red": red_nom,
+            "grade": material_data.get("material_grade", ""),
+            "full_grade": full_grade,
+            "line_num": material_data.get("line_number"),
+            "row_num": material_data.get("row_number"),
+            "category": classification_result.get("category", "UNCLASSIFIED"),
+            "confidence": classification_result.get("overall_confidence", 0.0),
+            "verified": False,
+            "dwg": material_data.get("dwg_name"),
+            "line": material_data.get("line_num"),
+            "created_at": datetime.now(),
+            "confirmed": is_purchase_confirmed,
+            "confirmed_at": purchase_confirmed_at,
+            "confirmed_by": purchase_confirmed_by,
+            "status": rev_status
+        })
+        
+        material_id = result.fetchone()[0]
+        
+        # 5. 상세 정보 저장 (별도 메서드로 분리)
+        MaterialService._save_material_details(
+            db, material_id, file_id, classification_result, material_data
+        )
+
+    @staticmethod
+    def _save_material_details(db: Session, material_id: int, file_id: int, 
+                             result: Dict, data: Dict):
+        """카테고리별 상세 정보 저장"""
+        category = result.get("category")
+        
+        if category == "PIPE":
+            MaterialService._save_pipe_details(db, material_id, file_id, result, data)
+        elif category == "FITTING":
+            MaterialService._save_fitting_details(db, material_id, file_id, result, data)
+        elif category == "FLANGE":
+            MaterialService._save_flange_details(db, material_id, file_id, result, data)
+        elif category == "BOLT":
+            MaterialService._save_bolt_details(db, material_id, file_id, result, data)
+        elif category == "VALVE":
+            MaterialService._save_valve_details(db, material_id, file_id, result, data)
+        elif category == "GASKET":
+            MaterialService._save_gasket_details(db, material_id, file_id, result, data)
+        elif category == "SUPPORT":
+            MaterialService._save_support_details(db, material_id, file_id, result, data)
+        elif category == "PLATE":
+            MaterialService._save_plate_details(db, material_id, file_id, result, data)
+        elif category == "STRUCTURAL":
+            MaterialService._save_structural_details(db, material_id, file_id, result, data)
+
+    @staticmethod
+    def _save_plate_details(db: Session, mid: int, fid: int, res: Dict, data: Dict):
+        """판재 정보 업데이트 (현재는 materials 테이블에 요약 정보 저장)"""
+        details = res.get("details", {})
+        spec = f"{details.get('thickness')}T x {details.get('dimensions')}"
+        db.execute(text("""
+            UPDATE materials 
+            SET size_spec = :size, material_grade = :mat
+            WHERE id = :id
+        """), {"size": spec, "mat": details.get("material"), "id": mid})
+
+    @staticmethod
+    def _save_structural_details(db: Session, mid: int, fid: int, res: Dict, data: Dict):
+        """형강 정보 업데이트 (현재는 materials 테이블에 요약 정보 저장)"""
+        details = res.get("details", {})
+        spec = f"{details.get('type')} {details.get('dimension')}"
+        db.execute(text("""
+            UPDATE materials 
+            SET size_spec = :size
+            WHERE id = :id
+        """), {"size": spec, "id": mid})
+
+    # --- 각 카테고리별 상세 저장 메서드들 (기존 로직 이관) ---
+    
+    @staticmethod
+    def inherit_purchase_requests(db: Session, current_file_id: int, parent_file_id: int):
+        """이전 리비전의 구매신청 정보를 상속합니다."""
+        try:
+            print(f"🔄 구매신청 정보 상속 처리 시작...")
+            
+            # 1. 이전 리비전에서 그룹별 구매신청 수량 집계
+            prev_purchase_summary = text("""
+                SELECT 
+                    m.original_description,
+                    m.size_spec,
+                    m.material_grade,
+                    m.drawing_name,
+                    COUNT(DISTINCT pri.material_id) as purchased_count,
+                    SUM(pri.quantity) as total_purchased_qty,
+                    MIN(pri.request_id) as request_id
+                FROM materials m
+                JOIN purchase_request_items pri ON m.id = pri.material_id
+                WHERE m.file_id = :parent_file_id
+                GROUP BY m.original_description, m.size_spec, m.material_grade, m.drawing_name
+            """)
+            
+            prev_purchases = db.execute(prev_purchase_summary, {"parent_file_id": parent_file_id}).fetchall()
+            
+            # 2. 새 리비전에서 같은 그룹의 자재에 수량만큼 구매신청 상속
+            for prev_purchase in prev_purchases:
+                purchased_count = prev_purchase.purchased_count
+                
+                # 새 리비전에서 같은 그룹의 자재 조회 (순서대로)
+                new_group_materials = text("""
+                    SELECT id, quantity
+                    FROM materials
+                    WHERE file_id = :file_id
+                    AND original_description = :description
+                    AND COALESCE(size_spec, '') = :size_spec
+                    AND COALESCE(material_grade, '') = :material_grade
+                    AND COALESCE(drawing_name, '') = :drawing_name
+                    ORDER BY id
+                    LIMIT :limit
+                """)
+                
+                new_materials = db.execute(new_group_materials, {
+                    "file_id": current_file_id,
+                    "description": prev_purchase.original_description,
+                    "size_spec": prev_purchase.size_spec or '',
+                    "material_grade": prev_purchase.material_grade or '',
+                    "drawing_name": prev_purchase.drawing_name or '',
+                    "limit": purchased_count
+                }).fetchall()
+                
+                # 구매신청 수량만큼만 상속
+                for new_mat in new_materials:
+                    inherit_query = text("""
+                        INSERT INTO purchase_request_items (
+                            request_id, material_id, quantity, unit, user_requirement
+                        ) VALUES (
+                            :request_id, :material_id, :quantity, 'EA', ''
+                        )
+                        ON CONFLICT DO NOTHING
+                    """)
+                    db.execute(inherit_query, {
+                        "request_id": prev_purchase.request_id,
+                        "material_id": new_mat.id,
+                        "quantity": new_mat.quantity
+                    })
+                
+                inherited_count = len(new_materials)
+                if inherited_count > 0:
+                    print(f"  ✅ {prev_purchase.original_description[:30]}... (도면: {prev_purchase.drawing_name or 'N/A'}) → {inherited_count}/{purchased_count}개 상속")
+            
+            # 커밋은 호출하는 쪽에서 일괄 처리하거나 여기서 처리
+            # db.commit() 
+            print(f"✅ 구매신청 정보 상속 완료")
+            
+        except Exception as e:
+            print(f"❌ 구매신청 정보 상속 실패: {str(e)}")
+            # 상속 실패는 전체 프로세스를 중단하지 않음
+
+    @staticmethod
+    def _save_pipe_details(db, mid, fid, res, data):
+        # PIPE 상세 저장 로직
+        end_prep_info = extract_end_preparation_info(data["original_description"])
+        
+        # 1. End Prep 정보 저장
+        db.execute(text("""
+            INSERT INTO pipe_end_preparations (
+                material_id, file_id, end_preparation_type, end_preparation_code,
+                machining_required, cutting_note, original_description, confidence
+            ) VALUES (
+                :mid, :fid, :type, :code, :req, :note, :desc, :conf
+            )
+        """), {
+            "mid": mid, "fid": fid,
+            "type": end_prep_info["end_preparation_type"],
+            "code": end_prep_info["end_preparation_code"],
+            "req": end_prep_info["machining_required"],
+            "note": end_prep_info["cutting_note"],
+            "desc": end_prep_info["original_description"],
+            "conf": end_prep_info["confidence"]
+        })
+        
+        # 2. Pipe Details 저장
+        length_info = res.get("length_info", {})
+        length_mm = length_info.get("length_mm") or data.get("length", 0.0)
+        
+        mat_info = res.get("material", {})
+        sch_info = res.get("schedule", {})
+        
+        # 재질 정보 업데이트
+        if mat_info.get("grade"):
+            db.execute(text("UPDATE materials SET material_grade = :g WHERE id = :id"), 
+                      {"g": mat_info.get("grade"), "id": mid})
+
+        db.execute(text("""
+            INSERT INTO pipe_details (
+                material_id, file_id, outer_diameter, schedule,
+                material_spec, manufacturing_method, length_mm
+            ) VALUES (:mid, :fid, :od, :sch, :spec, :method, :len)
+        """), {
+            "mid": mid, "fid": fid,
+            "od": data.get("main_nom") or data.get("size_spec"),
+            "sch": sch_info.get("schedule", "UNKNOWN") if isinstance(sch_info, dict) else str(sch_info),
+            "spec": mat_info.get("grade", "") if isinstance(mat_info, dict) else "",
+            "method": res.get("manufacturing", {}).get("method", "UNKNOWN") if isinstance(res.get("manufacturing"), dict) else "UNKNOWN",
+            "len": length_mm or 0.0
+        })
+
+    @staticmethod
+    def _save_fitting_details(db, mid, fid, res, data):
+        fit_type = res.get("fitting_type", {})
+        mat_info = res.get("material", {})
+        
+        if mat_info.get("grade"):
+            db.execute(text("UPDATE materials SET material_grade = :g WHERE id = :id"), 
+                      {"g": mat_info.get("grade"), "id": mid})
+
+        db.execute(text("""
+            INSERT INTO fitting_details (
+                material_id, file_id, fitting_type, fitting_subtype,
+                connection_method, pressure_rating, material_grade,
+                main_size, reduced_size
+            ) VALUES (:mid, :fid, :type, :subtype, :conn, :rating, :grade, :main, :red)
+        """), {
+            "mid": mid, "fid": fid,
+            "type": fit_type.get("type", "UNKNOWN") if isinstance(fit_type, dict) else str(fit_type),
+            "subtype": fit_type.get("subtype", "UNKNOWN") if isinstance(fit_type, dict) else "UNKNOWN",
+            "conn": res.get("connection_method", {}).get("method", "UNKNOWN") if isinstance(res.get("connection_method"), dict) else "UNKNOWN",
+            "rating": res.get("pressure_rating", {}).get("rating", "UNKNOWN") if isinstance(res.get("pressure_rating"), dict) else "UNKNOWN",
+            "grade": mat_info.get("grade", "") if isinstance(mat_info, dict) else "",
+            "main": data.get("main_nom") or data.get("size_spec"),
+            "red": data.get("red_nom", "")
+        })
+
+    @staticmethod
+    def _save_flange_details(db, mid, fid, res, data):
+        flg_type = res.get("flange_type", {})
+        mat_info = res.get("material", {})
+
+        if mat_info.get("grade"):
+            db.execute(text("UPDATE materials SET material_grade = :g WHERE id = :id"), 
+                      {"g": mat_info.get("grade"), "id": mid})
+
+        db.execute(text("""
+            INSERT INTO flange_details (
+                material_id, file_id, flange_type, pressure_rating,
+                facing_type, material_grade, size_inches
+            ) VALUES (:mid, :fid, :type, :rating, :face, :grade, :size)
+        """), {
+            "mid": mid, "fid": fid,
+            "type": flg_type.get("type", "UNKNOWN") if isinstance(flg_type, dict) else str(flg_type),
+            "rating": res.get("pressure_rating", {}).get("rating", "UNKNOWN") if isinstance(res.get("pressure_rating"), dict) else "UNKNOWN",
+            "face": res.get("face_finish", {}).get("finish", "UNKNOWN") if isinstance(res.get("face_finish"), dict) else "UNKNOWN",
+            "grade": mat_info.get("grade", "") if isinstance(mat_info, dict) else "",
+            "size": data.get("main_nom") or data.get("size_spec")
+        })
+
+    @staticmethod
+    def _save_bolt_details(db, mid, fid, res, data):
+        fast_type = res.get("fastener_type", {})
+        mat_info = res.get("material", {})
+        dim_info = res.get("dimensions", {})
+        
+        if mat_info.get("grade"):
+            db.execute(text("UPDATE materials SET material_grade = :g WHERE id = :id"), 
+                      {"g": mat_info.get("grade"), "id": mid})
+
+        # 볼트 타입 결정 (특수 용도 고려)
+        bolt_type = fast_type.get("type", "UNKNOWN") if isinstance(fast_type, dict) else str(fast_type)
+        special_apps = res.get("special_applications", {}).get("detected_applications", [])
+        if "LT" in special_apps: bolt_type = "LT_BOLT"
+        elif "PSV" in special_apps: bolt_type = "PSV_BOLT"
+
+        # 코팅 타입
+        desc_upper = data["original_description"].upper()
+        coating = "UNKNOWN"
+        if "GALV" in desc_upper: coating = "GALVANIZED"
+        elif "ZINC" in desc_upper: coating = "ZINC_PLATED"
+
+        db.execute(text("""
+            INSERT INTO bolt_details (
+                material_id, file_id, bolt_type, thread_type,
+                diameter, length, material_grade, coating_type
+            ) VALUES (:mid, :fid, :type, :thread, :dia, :len, :grade, :coating)
+        """), {
+            "mid": mid, "fid": fid,
+            "type": bolt_type,
+            "thread": res.get("thread_specification", {}).get("standard", "UNKNOWN") if isinstance(res.get("thread_specification"), dict) else "UNKNOWN",
+            "dia": dim_info.get("nominal_size", data.get("main_nom", "")),
+            "len": dim_info.get("length", ""),
+            "grade": mat_info.get("grade", "") if isinstance(mat_info, dict) else "",
+            "coating": coating
+        })
+
+    @staticmethod
+    def _save_valve_details(db, mid, fid, res, data):
+        val_type = res.get("valve_type", {})
+        mat_info = res.get("material", {})
+        
+        if mat_info.get("grade"):
+            db.execute(text("UPDATE materials SET material_grade = :g WHERE id = :id"), 
+                      {"g": mat_info.get("grade"), "id": mid})
+
+        db.execute(text("""
+            INSERT INTO valve_details (
+                material_id, file_id, valve_type, connection_method, 
+                pressure_rating, body_material, size_inches
+            ) VALUES (:mid, :fid, :type, :conn, :rating, :body, :size)
+        """), {
+            "mid": mid, "fid": fid,
+            "type": val_type.get("type", "UNKNOWN") if isinstance(val_type, dict) else str(val_type),
+            "conn": res.get("connection_method", {}).get("method", "UNKNOWN") if isinstance(res.get("connection_method"), dict) else "UNKNOWN",
+            "rating": res.get("pressure_rating", {}).get("rating", "UNKNOWN") if isinstance(res.get("pressure_rating"), dict) else "UNKNOWN",
+            "body": mat_info.get("grade", "") if isinstance(mat_info, dict) else "",
+            "size": data.get("main_nom") or data.get("size_spec")
+        })
+
+    @staticmethod
+    def _save_gasket_details(db, mid, fid, res, data):
+        gask_type = res.get("gasket_type", {})
+        
+        db.execute(text("""
+            INSERT INTO gasket_details (
+                material_id, file_id, gasket_type, pressure_rating, size_inches
+            ) VALUES (:mid, :fid, :type, :rating, :size)
+        """), {
+            "mid": mid, "fid": fid,
+            "type": gask_type.get("type", "UNKNOWN") if isinstance(gask_type, dict) else str(gask_type),
+            "rating": res.get("pressure_rating", {}).get("rating", "UNKNOWN") if isinstance(res.get("pressure_rating"), dict) else "UNKNOWN",
+            "size": data.get("main_nom") or data.get("size_spec")
+        })
+
+    @staticmethod
+    def _save_support_details(db, mid, fid, res, data):
+        db.execute(text("""
+            INSERT INTO support_details (
+                material_id, file_id, support_type, pipe_size
+            ) VALUES (:mid, :fid, :type, :size)
+        """), {
+            "mid": mid, "fid": fid,
+            "type": res.get("support_type", "UNKNOWN"),
+            "size": res.get("size_info", {}).get("pipe_size", "")
+        })

backend/app/services/pipe_classifier.py

@@ -7,6 +7,60 @@ import re
 from typing import Dict, List, Optional
 from .material_classifier import classify_material, get_manufacturing_method_from_material
 
+# ========== PIPE USER 요구사항 키워드 ==========
+PIPE_USER_REQUIREMENTS = {
+    "IMPACT_TEST": {
+        "keywords": ["IMPACT", "충격시험", "CHARPY", "CVN", "IMPACT TEST", "충격", "NOTCH"],
+        "description": "충격시험 요구",
+        "confidence": 0.95
+    },
+    "ASME_CODE": {
+        "keywords": ["ASME", "ASME CODE", "CODE", "B31.1", "B31.3", "B31.4", "B31.8", "VIII"],
+        "description": "ASME 코드 준수",
+        "confidence": 0.95
+    },
+    "STRESS_RELIEF": {
+        "keywords": ["STRESS RELIEF", "SR", "응력제거", "열처리", "HEAT TREATMENT"],
+        "description": "응력제거 열처리",
+        "confidence": 0.90
+    },
+    "RADIOGRAPHIC_TEST": {
+        "keywords": ["RT", "RADIOGRAPHIC", "방사선시험", "X-RAY", "엑스레이"],
+        "description": "방사선 시험",
+        "confidence": 0.90
+    },
+    "ULTRASONIC_TEST": {
+        "keywords": ["UT", "ULTRASONIC", "초음파시험", "초음파"],
+        "description": "초음파 시험",
+        "confidence": 0.90
+    },
+    "MAGNETIC_PARTICLE": {
+        "keywords": ["MT", "MAGNETIC PARTICLE", "자분탐상", "자분"],
+        "description": "자분탐상 시험",
+        "confidence": 0.90
+    },
+    "LIQUID_PENETRANT": {
+        "keywords": ["PT", "LIQUID PENETRANT", "침투탐상", "침투"],
+        "description": "침투탐상 시험",
+        "confidence": 0.90
+    },
+    "HYDROSTATIC_TEST": {
+        "keywords": ["HYDROSTATIC", "수압시험", "PRESSURE TEST", "압력시험"],
+        "description": "수압 시험",
+        "confidence": 0.90
+    },
+    "LOW_TEMPERATURE": {
+        "keywords": ["LOW TEMP", "저온", "LTCS", "LOW TEMPERATURE", "CRYOGENIC"],
+        "description": "저온용",
+        "confidence": 0.85
+    },
+    "HIGH_TEMPERATURE": {
+        "keywords": ["HIGH TEMP", "고온", "HTCS", "HIGH TEMPERATURE"],
+        "description": "고온용",
+        "confidence": 0.85
+    }
+}
+
 # ========== PIPE 제조 방법별 분류 ==========
 PIPE_MANUFACTURING = {
     "SEAMLESS": {
@@ -138,6 +192,27 @@ PIPE_SCHEDULE = {
     ]
 }
 
+def extract_pipe_user_requirements(description: str) -> List[str]:
+    """
+    파이프 설명에서 User 요구사항 추출
+    
+    Args:
+        description: 파이프 설명
+    
+    Returns:
+        발견된 요구사항 리스트
+    """
+    desc_upper = description.upper()
+    found_requirements = []
+    
+    for req_type, req_data in PIPE_USER_REQUIREMENTS.items():
+        for keyword in req_data["keywords"]:
+            if keyword in desc_upper:
+                found_requirements.append(req_data["description"])
+                break  # 같은 타입에서 중복 방지
+    
+    return found_requirements
+
 def classify_pipe_for_purchase(dat_file: str, description: str, main_nom: str, 
                               length: Optional[float] = None) -> Dict:
     """구매용 파이프 분류 - 끝단 가공 정보 제외"""
@@ -215,13 +290,16 @@ def classify_pipe(dat_file: str, description: str, main_nom: str,
     # 3. 끝 가공 분류
     end_prep_result = classify_pipe_end_preparation(description)
     
-    # 4. 스케줄 분류
-    schedule_result = classify_pipe_schedule(description)
+    # 4. 스케줄 분류 (재질 정보 전달)
+    schedule_result = classify_pipe_schedule(description, material_result)
     
     # 5. 길이(절단 치수) 처리
     length_info = extract_pipe_length_info(length, description)
     
-    # 6. 최종 결과 조합
+    # 6. User 요구사항 추출
+    user_requirements = extract_pipe_user_requirements(description)
+    
+    # 7. 최종 결과 조합
     return {
         "category": "PIPE",
         
@@ -260,6 +338,9 @@ def classify_pipe(dat_file: str, description: str, main_nom: str,
             "length_mm": length_info.get('length_mm')
         },
         
+        # User 요구사항
+        "user_requirements": user_requirements,
+        
         # 전체 신뢰도
         "overall_confidence": calculate_pipe_confidence({
             "material": material_result.get('confidence', 0),
@@ -328,19 +409,43 @@ def classify_pipe_end_preparation(description: str) -> Dict:
         "matched_code": "DEFAULT"
     }
 
-def classify_pipe_schedule(description: str) -> Dict:
-    """파이프 스케줄 분류"""
+def classify_pipe_schedule(description: str, material_result: Dict = None) -> Dict:
+    """파이프 스케줄 분류 - 재질별 표현 개선"""
     
     desc_upper = description.upper()
     
+    # 재질 정보 확인
+    material_type = "CARBON"  # 기본값
+    if material_result:
+        material_grade = material_result.get('grade', '').upper()
+        material_standard = material_result.get('standard', '').upper()
+        
+        # 스테인리스 스틸 판단
+        if any(sus_indicator in material_grade or sus_indicator in material_standard 
+               for sus_indicator in ['SUS', 'SS', 'A312', 'A358', 'A376', '304', '316', '321', '347']):
+            material_type = "STAINLESS"
+    
     # 1. 스케줄 패턴 확인
     for pattern in PIPE_SCHEDULE["patterns"]:
         match = re.search(pattern, desc_upper)
         if match:
             schedule_num = match.group(1)
+            
+            # 재질별 스케줄 표현
+            if material_type == "STAINLESS":
+                # 스테인리스 스틸: SCH 40S, SCH 80S
+                if schedule_num in ["10", "20", "40", "80", "120", "160"]:
+                    schedule_display = f"SCH {schedule_num}S"
+                else:
+                    schedule_display = f"SCH {schedule_num}"
+            else:
+                # 카본 스틸: SCH 40, SCH 80
+                schedule_display = f"SCH {schedule_num}"
+            
             return {
-                "schedule": f"SCH {schedule_num}",
+                "schedule": schedule_display,
                 "schedule_number": schedule_num,
+                "material_type": material_type,
                 "confidence": 0.95,
                 "matched_pattern": pattern
             }
@@ -353,6 +458,7 @@ def classify_pipe_schedule(description: str) -> Dict:
             return {
                 "schedule": f"{thickness}mm THK",
                 "wall_thickness": f"{thickness}mm",
+                "material_type": material_type,
                 "confidence": 0.9,
                 "matched_pattern": pattern
             }
@@ -360,6 +466,7 @@ def classify_pipe_schedule(description: str) -> Dict:
     # 3. 기본값
     return {
         "schedule": "UNKNOWN",
+        "material_type": material_type,
         "confidence": 0.0
     }
 

backend/app/services/plate_classifier.py

@@ -0,0 +1,50 @@
+
+import re
+from typing import Dict, Optional
+
+def classify_plate(tag: str, description: str, main_nom: str = "") -> Dict:
+    """
+    판재(PLATE) 분류기
+    규격 예: PLATE 10T x 1219 x 2438
+    """
+    desc_upper = description.upper()
+    
+    # 1. 두께(Thickness) 추출
+    # 패턴: 10T, 10.5T, THK 10, THK. 10, t=10
+    thickness = None
+    t_match = re.search(r'(\d+(?:\.\d+)?)\s*T\b', desc_upper)
+    if not t_match:
+        t_match = re.search(r'(?:THK\.?|t=)\s*(\d+(?:\.\d+)?)', desc_upper, re.IGNORECASE)
+    
+    if t_match:
+        thickness = t_match.group(1)
+        
+    # 2. 규격(Dimensions) 추출
+    # 패턴: 1219x2438, 4'x8', 1000*2000
+    dimensions = ""
+    dim_match = re.search(r'(\d+(?:\.\d+)?)\s*[X\*]\s*(\d+(?:\.\d+)?)(?:\s*[X\*]\s*(\d+(?:\.\d+)?))?', desc_upper)
+    if dim_match:
+        groups = [g for g in dim_match.groups() if g]
+        dimensions = " x ".join(groups)
+
+    # 3. 재질 추출
+    material = "UNKNOWN"
+    # 압력용기용 및 일반 구조용 강판 재질 추가
+    plate_materials = [
+        "SUS304", "SUS316", "SUS321", "SS400", "A36", "SM490", 
+        "SA516", "A516", "SA283", "A283", "SA537", "A537", "POS-M"
+    ]
+    for mat in plate_materials:
+        if mat in desc_upper:
+            material = mat
+            break
+
+    return {
+        "category": "PLATE",
+        "overall_confidence": 0.9,
+        "details": {
+            "thickness": thickness,
+            "dimensions": dimensions,
+            "material": material
+        }
+    }

backend/app/services/revision_comparator.py

@@ -93,16 +93,11 @@ class RevisionComparator:
     def compare_materials(self, previous_confirmed: Dict, new_materials: List[Dict]) -> Dict:
         """
         기존 확정 자재와 신규 자재 비교
-        
-        Args:
-            previous_confirmed: 이전 확정 자재 정보
-            new_materials: 신규 업로드된 자재 목록
-            
-        Returns:
-            비교 결과 딕셔너리
         """
         try:
-            # 이전 확정 자재를 해시맵으로 변환 (빠른 검색을 위해)
+            from rapidfuzz import fuzz
+
+            # 이전 확정 자재 해시맵 생성
             confirmed_materials = {}
             for item in previous_confirmed["items"]:
                 material_hash = self._generate_material_hash(
@@ -112,13 +107,19 @@ class RevisionComparator:
                 )
                 confirmed_materials[material_hash] = item
             
+            # 해시 역참조 맵 (유사도 비교용)
+            # 해시 -> 정규화된 설명 문자열 (비교 대상)
+            # 여기서는 specification 자체를 비교 대상으로 사용 (가장 정보량이 많음)
+            confirmed_specs = {
+                h: item["specification"] for h, item in confirmed_materials.items()
+            }
+            
             # 신규 자재 분석
-            unchanged_materials = []  # 변경 없음 (분류 불필요)
-            changed_materials = []    # 변경됨 (재분류 필요)
-            new_materials_list = []   # 신규 추가 (분류 필요)
+            unchanged_materials = [] 
+            changed_materials = []    
+            new_materials_list = []   
             
             for new_material in new_materials:
-                # 자재 해시 생성 (description 기반)
                 description = new_material.get("description", "")
                 size = self._extract_size_from_description(description)
                 material = self._extract_material_from_description(description)
@@ -126,13 +127,13 @@ class RevisionComparator:
                 material_hash = self._generate_material_hash(description, size, material)
                 
                 if material_hash in confirmed_materials:
+                    # 정확히 일치하는 자재 발견 (해시 일치)
                     confirmed_item = confirmed_materials[material_hash]
                     
-                    # 수량 비교
                     new_qty = float(new_material.get("quantity", 0))
                     confirmed_qty = float(confirmed_item["bom_quantity"])
                     
-                    if abs(new_qty - confirmed_qty) > 0.001:  # 수량 변경
+                    if abs(new_qty - confirmed_qty) > 0.001:
                         changed_materials.append({
                             **new_material,
                             "change_type": "QUANTITY_CHANGED",
@@ -140,27 +141,49 @@ class RevisionComparator:
                             "previous_item": confirmed_item
                         })
                     else:
-                        # 수량 동일 - 기존 분류 결과 재사용
                         unchanged_materials.append({
                             **new_material,
                             "reuse_classification": True,
                             "previous_item": confirmed_item
                         })
                 else:
-                    # 신규 자재
-                    new_materials_list.append({
-                        **new_material,
-                        "change_type": "NEW_MATERIAL"
-                    })
+                    # 해시 불일치 - 유사도 검사 (Fuzzy Matching)
+                    # 신규 자재 설명과 기존 확정 자재들의 스펙 비교
+                    best_match_hash = None
+                    best_match_score = 0
+                    
+                    # 성능을 위해 간단한 필터링 후 정밀 비교 권장되나, 
+                    # 현재는 전체 비교 (데이터량이 많지 않다고 가정)
+                    for h, spec in confirmed_specs.items():
+                        score = fuzz.ratio(description.lower(), spec.lower())
+                        if score > 85: # 85점 이상이면 매우 유사
+                            if score > best_match_score:
+                                best_match_score = score
+                                best_match_hash = h
+                    
+                    if best_match_hash:
+                        # 유사한 자재 발견 (오타 또는 미세 변경 가능성)
+                        similar_item = confirmed_materials[best_match_hash]
+                        new_materials_list.append({
+                            **new_material,
+                            "change_type": "NEW_BUT_SIMILAR",
+                            "similarity_score": best_match_score,
+                            "similar_to": similar_item
+                        })
+                    else:
+                        # 완전히 새로운 자재
+                        new_materials_list.append({
+                            **new_material,
+                            "change_type": "NEW_MATERIAL"
+                        })
             
-            # 삭제된 자재 찾기 (이전에는 있었지만 현재는 없는 것)
+            # 삭제된 자재 찾기
             new_material_hashes = set()
             for material in new_materials:
-                description = material.get("description", "")
-                size = self._extract_size_from_description(description)
-                material_grade = self._extract_material_from_description(description)
-                hash_key = self._generate_material_hash(description, size, material_grade)
-                new_material_hashes.add(hash_key)
+                d = material.get("description", "")
+                s = self._extract_size_from_description(d)
+                m = self._extract_material_from_description(d)
+                new_material_hashes.add(self._generate_material_hash(d, s, m))
             
             removed_materials = []
             for hash_key, confirmed_item in confirmed_materials.items():
@@ -186,7 +209,7 @@ class RevisionComparator:
                 "removed_materials": removed_materials
             }
             
-            logger.info(f"리비전 비교 완료: 변경없음 {len(unchanged_materials)}, "
+            logger.info(f"리비전 비교 완료 (Fuzzy 적용): 변경없음 {len(unchanged_materials)}, "
                        f"변경됨 {len(changed_materials)}, 신규 {len(new_materials_list)}, "
                        f"삭제됨 {len(removed_materials)}")
             
@@ -195,7 +218,7 @@ class RevisionComparator:
         except Exception as e:
             logger.error(f"자재 비교 실패: {str(e)}")
             raise
-    
+
     def _extract_revision_number(self, revision: str) -> int:
         """리비전 문자열에서 숫자 추출 (Rev.1 → 1)"""
         try:
@@ -206,37 +229,136 @@ class RevisionComparator:
             return 0
     
     def _generate_material_hash(self, description: str, size: str, material: str) -> str:
-        """자재 고유성 판단을 위한 해시 생성"""
-        # RULES.md의 코딩 컨벤션 준수
-        hash_input = f"{description}|{size}|{material}".lower().strip()
+        """
+        자재 고유성 판단을 위한 해시 생성
+        
+        Args:
+            description: 자재 설명
+            size: 자재 규격/크기
+            material: 자재 재질
+            
+        Returns:
+            MD5 해시 문자열
+        """
+        import re
+        
+        def normalize(s: Optional[str]) -> str:
+            if s is None:
+                return ""
+            # 다중 공백을 단일 공백으로 치환하고 앞뒤 공백 제거
+            s = re.sub(r'\s+', ' ', str(s))
+            return s.strip().lower()
+
+        # 각 컴포넌트 정규화
+        d_norm = normalize(description)
+        s_norm = normalize(size)
+        m_norm = normalize(material)
+
+        # RULES.md의 코딩 컨벤션 준수 (pipe separator 사용)
+        # 값이 없는 경우에도 구분자를 포함하여 구조 유지 (예: "desc||mat")
+        hash_input = f"{d_norm}|{s_norm}|{m_norm}"
+        
         return hashlib.md5(hash_input.encode()).hexdigest()
     
     def _extract_size_from_description(self, description: str) -> str:
-        """자재 설명에서 사이즈 정보 추출"""
-        # 간단한 사이즈 패턴 추출 (실제로는 더 정교한 로직 필요)
+        """
+        자재 설명에서 사이즈 정보 추출
+        
+        지원하는 패턴 (단어 경계 \b 추가하여 정확도 향상):
+        - 1/2" (인치)
+        - 100A (A단위)
+        - 50mm (밀리미터)
+        - 10x20 (가로x세로)
+        - DN100 (DN단위)
+        """
+        if not description:
+            return ""
+            
         import re
         size_patterns = [
-            r'(\d+(?:\.\d+)?)\s*(?:mm|MM|인치|inch|")',
-            r'(\d+(?:\.\d+)?)\s*x\s*(\d+(?:\.\d+)?)',
-            r'DN\s*(\d+)',
-            r'(\d+)\s*A'
+            # 인치 패턴 (분수 포함): 1/2", 1.5", 1-1/2"
+            r'\b(\d+(?:[-/.]\d+)?)\s*(?:inch|인치|")',
+            # 밀리미터 패턴: 100mm, 100.5 MM
+            r'\b(\d+(?:\.\d+)?)\s*(?:mm|MM)\b',
+            # A단위 패턴: 100A, 100 A
+            r'\b(\d+)\s*A\b',
+            # DN단위 패턴: DN100, DN 100
+            r'DN\s*(\d+)\b',
+            # 치수 패턴: 10x20, 10*20
+            r'\b(\d+(?:\.\d+)?)\s*[xX*]\s*(\d+(?:\.\d+)?)\b'
         ]
         
         for pattern in size_patterns:
             match = re.search(pattern, description, re.IGNORECASE)
             if match:
-                return match.group(0)
+                return match.group(0).strip()
         
         return ""
     
+    def _load_materials_from_db(self) -> List[str]:
+        """DB에서 자재 목록 동적 로딩 (캐싱 적용 고려 가능)"""
+        try:
+            # MaterialSpecification 및 SpecialMaterial 테이블에서 자재 코드 조회
+            query = text("""
+                SELECT spec_code FROM material_specifications 
+                WHERE is_active = TRUE
+                UNION 
+                SELECT grade_code FROM material_grades 
+                WHERE is_active = TRUE
+                UNION
+                SELECT material_name FROM special_materials
+                WHERE is_active = TRUE
+            """)
+            result = self.db.execute(query).fetchall()
+            db_materials = [row[0] for row in result]
+            
+            # 기본 하드코딩 리스트 (DB 조회 실패 시 또는 보완용)
+            default_materials = [
+                "SUS316L", "SUS316", "SUS304L", "SUS304",
+                "SS316L", "SS316", "SS304L", "SS304",
+                "A105N", "A105", 
+                "A234 WPB", "A234",
+                "A106 Gr.B", "A106",
+                "WCB", "CF8M", "CF8", 
+                "CS", "STS", "PVC", "PP", "PE"
+            ]
+            
+            # 합치고 중복 제거 후 길이 역순 정렬 (긴 단어 우선 매칭)
+            combined = list(set(db_materials + default_materials))
+            combined.sort(key=len, reverse=True)
+            
+            return combined
+            
+        except Exception as e:
+            logger.warning(f"DB 자재 로딩 실패 (기본값 사용): {str(e)}")
+            materials = [
+                "SUS316L", "SUS316", "SUS304L", "SUS304",
+                "SS316L", "SS316", "SS304L", "SS304",
+                "A105N", "A105", 
+                "A234 WPB", "A234",
+                "A106 Gr.B", "A106",
+                "WCB", "CF8M", "CF8", 
+                "CS", "STS", "PVC", "PP", "PE"
+            ]
+            return materials
+
     def _extract_material_from_description(self, description: str) -> str:
-        """자재 설명에서 재질 정보 추출"""
-        # 일반적인 재질 패턴
-        materials = ["SS304", "SS316", "SS316L", "A105", "WCB", "CF8M", "CF8", "CS"]
+        """
+        자재 설명에서 재질 정보 추출
+        우선순위에 따라 매칭 (구체적인 재질 먼저)
+        """
+        if not description:
+            return ""
+            
+        # 자재 목록 로딩 (메모리 캐싱을 위해 클래스 속성으로 저장 고려 가능하지만 여기선 매번 호출로 단순화)
+        # 성능이 중요하다면 __init__ 시점에 로드하거나 lru_cache 사용 권장
+        materials = self._load_materials_from_db()
         
         description_upper = description.upper()
+        
         for material in materials:
-            if material in description_upper:
+            # 단어 매칭을 위해 간단한 검사 수행 (부분 문자열이 다른 단어의 일부가 아닌지)
+            if material.upper() in description_upper:
                 return material
         
         return ""

backend/app/services/revision_comparison_service.py

@@ -0,0 +1,457 @@
+"""
+리비전 비교 및 변경 처리 서비스
+- 자재 비교 로직 (구매된/미구매 자재 구분)
+- 리비전 액션 결정 (추가구매, 재고이관, 수량변경 등)
+- GASKET/BOLT 특별 처리 (BOM 원본 수량 기준)
+"""
+
+import logging
+from typing import Dict, List, Optional, Any, Tuple
+from decimal import Decimal
+from sqlalchemy.orm import Session
+from sqlalchemy import text, and_, or_
+
+from ..models import Material
+
+logger = logging.getLogger(__name__)
+
+
+class RevisionComparisonService:
+    """리비전 비교 및 변경 처리 서비스"""
+    
+    def __init__(self, db: Session):
+        self.db = db
+    
+    def compare_materials_by_category(
+        self, 
+        current_file_id: int, 
+        previous_file_id: int, 
+        category: str,
+        session_id: int
+    ) -> Dict[str, Any]:
+        """카테고리별 자재 비교 및 변경사항 기록"""
+        
+        try:
+            logger.info(f"카테고리 {category} 자재 비교 시작 (현재: {current_file_id}, 이전: {previous_file_id})")
+            
+            # 현재 파일의 자재 조회
+            current_materials = self._get_materials_by_category(current_file_id, category)
+            previous_materials = self._get_materials_by_category(previous_file_id, category)
+            
+            logger.info(f"현재 자재: {len(current_materials)}개, 이전 자재: {len(previous_materials)}개")
+            
+            # 자재 그룹화 (동일 자재 식별)
+            current_grouped = self._group_materials_by_key(current_materials, category)
+            previous_grouped = self._group_materials_by_key(previous_materials, category)
+            
+            # 비교 결과 저장
+            comparison_results = {
+                "added": [],
+                "removed": [],
+                "changed": [],
+                "unchanged": []
+            }
+            
+            # 현재 자재 기준으로 비교
+            for key, current_group in current_grouped.items():
+                if key in previous_grouped:
+                    previous_group = previous_grouped[key]
+                    
+                    # 수량 비교 (GASKET/BOLT는 BOM 원본 수량 기준)
+                    current_qty = self._get_comparison_quantity(current_group, category)
+                    previous_qty = self._get_comparison_quantity(previous_group, category)
+                    
+                    if current_qty != previous_qty:
+                        # 수량 변경됨
+                        change_record = self._create_change_record(
+                            current_group, previous_group, "quantity_changed", 
+                            current_qty, previous_qty, category, session_id
+                        )
+                        comparison_results["changed"].append(change_record)
+                    else:
+                        # 수량 동일
+                        unchanged_record = self._create_change_record(
+                            current_group, previous_group, "unchanged",
+                            current_qty, previous_qty, category, session_id
+                        )
+                        comparison_results["unchanged"].append(unchanged_record)
+                else:
+                    # 새로 추가된 자재
+                    current_qty = self._get_comparison_quantity(current_group, category)
+                    added_record = self._create_change_record(
+                        current_group, None, "added",
+                        current_qty, 0, category, session_id
+                    )
+                    comparison_results["added"].append(added_record)
+            
+            # 제거된 자재 확인
+            for key, previous_group in previous_grouped.items():
+                if key not in current_grouped:
+                    previous_qty = self._get_comparison_quantity(previous_group, category)
+                    removed_record = self._create_change_record(
+                        None, previous_group, "removed",
+                        0, previous_qty, category, session_id
+                    )
+                    comparison_results["removed"].append(removed_record)
+            
+            # DB에 변경사항 저장
+            self._save_material_changes(comparison_results, session_id)
+            
+            # 통계 정보
+            summary = {
+                "category": category,
+                "added_count": len(comparison_results["added"]),
+                "removed_count": len(comparison_results["removed"]),
+                "changed_count": len(comparison_results["changed"]),
+                "unchanged_count": len(comparison_results["unchanged"]),
+                "total_changes": len(comparison_results["added"]) + len(comparison_results["removed"]) + len(comparison_results["changed"])
+            }
+            
+            logger.info(f"카테고리 {category} 비교 완료: {summary}")
+            
+            return {
+                "summary": summary,
+                "changes": comparison_results
+            }
+            
+        except Exception as e:
+            logger.error(f"카테고리 {category} 자재 비교 실패: {e}")
+            raise
+    
+    def _get_materials_by_category(self, file_id: int, category: str) -> List[Material]:
+        """파일의 특정 카테고리 자재 조회"""
+        
+        return self.db.query(Material).filter(
+            and_(
+                Material.file_id == file_id,
+                Material.classified_category == category,
+                Material.is_active == True
+            )
+        ).all()
+    
+    def _group_materials_by_key(self, materials: List[Material], category: str) -> Dict[str, Dict]:
+        """자재를 고유 키로 그룹화"""
+        
+        grouped = {}
+        
+        for material in materials:
+            # 카테고리별 고유 키 생성 전략
+            if category == "PIPE":
+                # PIPE: description + material_grade + main_nom
+                key_parts = [
+                    material.original_description.strip().upper(),
+                    material.material_grade or '',
+                    material.main_nom or ''
+                ]
+            elif category in ["GASKET", "BOLT"]:
+                # GASKET/BOLT: description + main_nom (집계 공식 적용 전 원본 기준)
+                key_parts = [
+                    material.original_description.strip().upper(),
+                    material.main_nom or ''
+                ]
+            else:
+                # 기타: description + drawing + main_nom + red_nom
+                key_parts = [
+                    material.original_description.strip().upper(),
+                    material.drawing_name or '',
+                    material.main_nom or '',
+                    material.red_nom or ''
+                ]
+            
+            key = "|".join(key_parts)
+            
+            if key in grouped:
+                # 동일한 자재가 있으면 수량 합산
+                grouped[key]['total_quantity'] += float(material.quantity)
+                grouped[key]['materials'].append(material)
+                
+                # 구매 확정 상태 확인 (하나라도 구매 확정되면 전체가 구매 확정)
+                if getattr(material, 'purchase_confirmed', False):
+                    grouped[key]['purchase_confirmed'] = True
+                    grouped[key]['purchase_confirmed_at'] = getattr(material, 'purchase_confirmed_at', None)
+                    
+            else:
+                grouped[key] = {
+                    'key': key,
+                    'representative_material': material,
+                    'materials': [material],
+                    'total_quantity': float(material.quantity),
+                    'purchase_confirmed': getattr(material, 'purchase_confirmed', False),
+                    'purchase_confirmed_at': getattr(material, 'purchase_confirmed_at', None),
+                    'category': category
+                }
+        
+        return grouped
+    
+    def _get_comparison_quantity(self, material_group: Dict, category: str) -> Decimal:
+        """비교용 수량 계산 (GASKET/BOLT는 집계 공식 적용 전 원본 수량)"""
+        
+        if category in ["GASKET", "BOLT"]:
+            # GASKET/BOLT: BOM 원본 수량 기준 (집계 공식 적용 전)
+            # 실제 BOM에서 읽은 원본 수량을 사용
+            original_quantity = 0
+            for material in material_group['materials']:
+                # classification_details에서 원본 수량 추출 시도
+                details = getattr(material, 'classification_details', {})
+                if isinstance(details, dict) and 'original_quantity' in details:
+                    original_quantity += float(details['original_quantity'])
+                else:
+                    # 원본 수량 정보가 없으면 현재 수량 사용
+                    original_quantity += float(material.quantity)
+            
+            return Decimal(str(original_quantity))
+        else:
+            # 기타 카테고리: 현재 수량 사용
+            return Decimal(str(material_group['total_quantity']))
+    
+    def _create_change_record(
+        self, 
+        current_group: Optional[Dict], 
+        previous_group: Optional[Dict],
+        change_type: str,
+        current_qty: Decimal,
+        previous_qty: Decimal,
+        category: str,
+        session_id: int
+    ) -> Dict[str, Any]:
+        """변경 기록 생성"""
+        
+        # 대표 자재 정보
+        if current_group:
+            material = current_group['representative_material']
+            material_id = material.id
+            description = material.original_description
+            purchase_status = 'purchased' if current_group['purchase_confirmed'] else 'not_purchased'
+            purchase_confirmed_at = current_group.get('purchase_confirmed_at')
+        else:
+            material = previous_group['representative_material']
+            material_id = None  # 제거된 자재는 현재 material_id가 없음
+            description = material.original_description
+            purchase_status = 'purchased' if previous_group['purchase_confirmed'] else 'not_purchased'
+            purchase_confirmed_at = previous_group.get('purchase_confirmed_at')
+        
+        # 리비전 액션 결정
+        revision_action = self._determine_revision_action(
+            change_type, current_qty, previous_qty, purchase_status, category
+        )
+        
+        return {
+            "session_id": session_id,
+            "material_id": material_id,
+            "previous_material_id": material.id if previous_group else None,
+            "material_description": description,
+            "category": category,
+            "change_type": change_type,
+            "current_quantity": float(current_qty),
+            "previous_quantity": float(previous_qty),
+            "quantity_difference": float(current_qty - previous_qty),
+            "purchase_status": purchase_status,
+            "purchase_confirmed_at": purchase_confirmed_at,
+            "revision_action": revision_action
+        }
+    
+    def _determine_revision_action(
+        self, 
+        change_type: str, 
+        current_qty: Decimal, 
+        previous_qty: Decimal,
+        purchase_status: str,
+        category: str
+    ) -> str:
+        """리비전 액션 결정 로직"""
+        
+        if change_type == "added":
+            return "new_material"
+        elif change_type == "removed":
+            if purchase_status == "purchased":
+                return "inventory_transfer"  # 구매된 자재 → 재고 이관
+            else:
+                return "purchase_cancel"     # 미구매 자재 → 구매 취소
+        elif change_type == "quantity_changed":
+            quantity_diff = current_qty - previous_qty
+            
+            if purchase_status == "purchased":
+                if quantity_diff > 0:
+                    return "additional_purchase"  # 구매된 자재 수량 증가 → 추가 구매
+                else:
+                    return "inventory_transfer"   # 구매된 자재 수량 감소 → 재고 이관
+            else:
+                return "quantity_update"          # 미구매 자재 → 수량 업데이트
+        else:
+            return "maintain"  # 변경 없음
+    
+    def _save_material_changes(self, comparison_results: Dict, session_id: int):
+        """변경사항을 DB에 저장"""
+        
+        try:
+            all_changes = []
+            for change_type, changes in comparison_results.items():
+                all_changes.extend(changes)
+            
+            if not all_changes:
+                return
+            
+            # 배치 삽입
+            insert_query = """
+                INSERT INTO revision_material_changes (
+                    session_id, material_id, previous_material_id, material_description,
+                    category, change_type, current_quantity, previous_quantity,
+                    quantity_difference, purchase_status, purchase_confirmed_at, revision_action
+                ) VALUES (
+                    :session_id, :material_id, :previous_material_id, :material_description,
+                    :category, :change_type, :current_quantity, :previous_quantity,
+                    :quantity_difference, :purchase_status, :purchase_confirmed_at, :revision_action
+                )
+            """
+            
+            self.db.execute(text(insert_query), all_changes)
+            self.db.commit()
+            
+            logger.info(f"변경사항 {len(all_changes)}건 저장 완료 (세션: {session_id})")
+            
+        except Exception as e:
+            self.db.rollback()
+            logger.error(f"변경사항 저장 실패: {e}")
+            raise
+    
+    def get_session_changes(self, session_id: int, category: str = None) -> List[Dict[str, Any]]:
+        """세션의 변경사항 조회"""
+        
+        try:
+            query = """
+                SELECT 
+                    id, material_id, material_description, category,
+                    change_type, current_quantity, previous_quantity, quantity_difference,
+                    purchase_status, revision_action, action_status,
+                    processed_by, processed_at, processing_notes
+                FROM revision_material_changes 
+                WHERE session_id = :session_id
+            """
+            params = {"session_id": session_id}
+            
+            if category:
+                query += " AND category = :category"
+                params["category"] = category
+            
+            query += " ORDER BY category, material_description"
+            
+            changes = self.db.execute(text(query), params).fetchall()
+            
+            return [dict(change._mapping) for change in changes]
+            
+        except Exception as e:
+            logger.error(f"세션 변경사항 조회 실패: {e}")
+            raise
+    
+    def process_revision_action(
+        self, 
+        change_id: int, 
+        action: str, 
+        username: str,
+        notes: str = None
+    ) -> Dict[str, Any]:
+        """리비전 액션 처리"""
+        
+        try:
+            # 변경사항 조회
+            change = self.db.execute(text("""
+                SELECT * FROM revision_material_changes WHERE id = :change_id
+            """), {"change_id": change_id}).fetchone()
+            
+            if not change:
+                raise ValueError(f"변경사항을 찾을 수 없습니다: {change_id}")
+            
+            result = {"success": False, "message": ""}
+            
+            # 액션별 처리
+            if action == "additional_purchase":
+                result = self._process_additional_purchase(change, username, notes)
+            elif action == "inventory_transfer":
+                result = self._process_inventory_transfer(change, username, notes)
+            elif action == "purchase_cancel":
+                result = self._process_purchase_cancel(change, username, notes)
+            elif action == "quantity_update":
+                result = self._process_quantity_update(change, username, notes)
+            else:
+                result = {"success": True, "message": "처리 완료"}
+            
+            # 처리 상태 업데이트
+            status = "completed" if result["success"] else "failed"
+            self.db.execute(text("""
+                UPDATE revision_material_changes 
+                SET action_status = :status, processed_by = :username, 
+                    processed_at = CURRENT_TIMESTAMP, processing_notes = :notes
+                WHERE id = :change_id
+            """), {
+                "change_id": change_id,
+                "status": status,
+                "username": username,
+                "notes": notes or result["message"]
+            })
+            
+            # 액션 로그 기록
+            self.db.execute(text("""
+                INSERT INTO revision_action_logs (
+                    session_id, revision_change_id, action_type, action_description,
+                    executed_by, result, result_message
+                ) VALUES (
+                    :session_id, :change_id, :action, :description,
+                    :username, :result, :message
+                )
+            """), {
+                "session_id": change.session_id,
+                "change_id": change_id,
+                "action": action,
+                "description": f"{change.material_description} - {action}",
+                "username": username,
+                "result": "success" if result["success"] else "failed",
+                "message": result["message"]
+            })
+            
+            self.db.commit()
+            
+            return result
+            
+        except Exception as e:
+            self.db.rollback()
+            logger.error(f"리비전 액션 처리 실패: {e}")
+            raise
+    
+    def _process_additional_purchase(self, change, username: str, notes: str) -> Dict[str, Any]:
+        """추가 구매 처리"""
+        # 구매 요청 생성 로직 구현
+        return {"success": True, "message": f"추가 구매 요청 생성: {change.quantity_difference}개"}
+    
+    def _process_inventory_transfer(self, change, username: str, notes: str) -> Dict[str, Any]:
+        """재고 이관 처리"""
+        # 재고 이관 로직 구현
+        try:
+            self.db.execute(text("""
+                INSERT INTO inventory_transfers (
+                    revision_change_id, material_description, category,
+                    quantity, unit, transferred_by, storage_notes
+                ) VALUES (
+                    :change_id, :description, :category,
+                    :quantity, 'EA', :username, :notes
+                )
+            """), {
+                "change_id": change.id,
+                "description": change.material_description,
+                "category": change.category,
+                "quantity": abs(change.quantity_difference),
+                "username": username,
+                "notes": notes
+            })
+            
+            return {"success": True, "message": f"재고 이관 완료: {abs(change.quantity_difference)}개"}
+            
+        except Exception as e:
+            return {"success": False, "message": f"재고 이관 실패: {str(e)}"}
+    
+    def _process_purchase_cancel(self, change, username: str, notes: str) -> Dict[str, Any]:
+        """구매 취소 처리"""
+        return {"success": True, "message": "구매 취소 완료"}
+    
+    def _process_quantity_update(self, change, username: str, notes: str) -> Dict[str, Any]:
+        """수량 업데이트 처리"""
+        return {"success": True, "message": f"수량 업데이트 완료: {change.current_quantity}개"}

backend/app/services/revision_session_service.py

@@ -0,0 +1,289 @@
+"""
+리비전 세션 관리 서비스
+- 리비전 세션 생성, 관리, 완료 처리
+- 자재 변경 사항 추적 및 처리
+"""
+
+import logging
+from typing import Dict, List, Optional, Any
+from datetime import datetime
+from sqlalchemy.orm import Session
+from sqlalchemy import text, and_, or_
+
+from ..models import File, Material
+from ..database import get_db
+
+logger = logging.getLogger(__name__)
+
+
+class RevisionSessionService:
+    """리비전 세션 관리 서비스"""
+    
+    def __init__(self, db: Session):
+        self.db = db
+    
+    def create_revision_session(
+        self, 
+        job_no: str, 
+        current_file_id: int, 
+        previous_file_id: int,
+        username: str
+    ) -> Dict[str, Any]:
+        """새로운 리비전 세션 생성"""
+        
+        try:
+            # 파일 정보 조회
+            current_file = self.db.query(File).filter(File.id == current_file_id).first()
+            previous_file = self.db.query(File).filter(File.id == previous_file_id).first()
+            
+            if not current_file or not previous_file:
+                raise ValueError("파일 정보를 찾을 수 없습니다")
+            
+            # 기존 진행 중인 세션이 있는지 확인
+            existing_session = self.db.execute(text("""
+                SELECT id FROM revision_sessions 
+                WHERE job_no = :job_no AND status = 'processing'
+            """), {"job_no": job_no}).fetchone()
+            
+            if existing_session:
+                logger.warning(f"기존 진행 중인 리비전 세션이 있습니다: {existing_session[0]}")
+                return {"session_id": existing_session[0], "status": "existing"}
+            
+            # 새 세션 생성
+            session_data = {
+                "job_no": job_no,
+                "current_file_id": current_file_id,
+                "previous_file_id": previous_file_id,
+                "current_revision": current_file.revision,
+                "previous_revision": previous_file.revision,
+                "status": "processing",
+                "created_by": username
+            }
+            
+            result = self.db.execute(text("""
+                INSERT INTO revision_sessions (
+                    job_no, current_file_id, previous_file_id, 
+                    current_revision, previous_revision, status, created_by
+                ) VALUES (
+                    :job_no, :current_file_id, :previous_file_id,
+                    :current_revision, :previous_revision, :status, :created_by
+                ) RETURNING id
+            """), session_data)
+            
+            session_id = result.fetchone()[0]
+            self.db.commit()
+            
+            logger.info(f"새 리비전 세션 생성: {session_id} (Job: {job_no})")
+            
+            return {
+                "session_id": session_id,
+                "status": "created",
+                "job_no": job_no,
+                "current_revision": current_file.revision,
+                "previous_revision": previous_file.revision
+            }
+            
+        except Exception as e:
+            self.db.rollback()
+            logger.error(f"리비전 세션 생성 실패: {e}")
+            raise
+    
+    def get_session_status(self, session_id: int) -> Dict[str, Any]:
+        """리비전 세션 상태 조회"""
+        
+        try:
+            session_info = self.db.execute(text("""
+                SELECT 
+                    id, job_no, current_file_id, previous_file_id,
+                    current_revision, previous_revision, status,
+                    total_materials, processed_materials,
+                    added_count, removed_count, changed_count, unchanged_count,
+                    purchase_cancel_count, inventory_transfer_count, additional_purchase_count,
+                    created_by, created_at, completed_at
+                FROM revision_sessions 
+                WHERE id = :session_id
+            """), {"session_id": session_id}).fetchone()
+            
+            if not session_info:
+                raise ValueError(f"리비전 세션을 찾을 수 없습니다: {session_id}")
+            
+            # 변경 사항 상세 조회
+            changes = self.db.execute(text("""
+                SELECT 
+                    category, change_type, revision_action, action_status,
+                    COUNT(*) as count,
+                    SUM(CASE WHEN purchase_status = 'purchased' THEN 1 ELSE 0 END) as purchased_count,
+                    SUM(CASE WHEN purchase_status = 'not_purchased' THEN 1 ELSE 0 END) as unpurchased_count
+                FROM revision_material_changes 
+                WHERE session_id = :session_id
+                GROUP BY category, change_type, revision_action, action_status
+                ORDER BY category, change_type
+            """), {"session_id": session_id}).fetchall()
+            
+            return {
+                "session_info": dict(session_info._mapping),
+                "changes_summary": [dict(change._mapping) for change in changes],
+                "progress_percentage": (
+                    (session_info.processed_materials / session_info.total_materials * 100) 
+                    if session_info.total_materials > 0 else 0
+                )
+            }
+            
+        except Exception as e:
+            logger.error(f"리비전 세션 상태 조회 실패: {e}")
+            raise
+    
+    def update_session_progress(
+        self, 
+        session_id: int, 
+        total_materials: int = None,
+        processed_materials: int = None,
+        **counts
+    ) -> bool:
+        """리비전 세션 진행 상황 업데이트"""
+        
+        try:
+            update_fields = []
+            update_values = {"session_id": session_id}
+            
+            if total_materials is not None:
+                update_fields.append("total_materials = :total_materials")
+                update_values["total_materials"] = total_materials
+            
+            if processed_materials is not None:
+                update_fields.append("processed_materials = :processed_materials")
+                update_values["processed_materials"] = processed_materials
+            
+            # 카운트 필드들 업데이트
+            count_fields = [
+                "added_count", "removed_count", "changed_count", "unchanged_count",
+                "purchase_cancel_count", "inventory_transfer_count", "additional_purchase_count"
+            ]
+            
+            for field in count_fields:
+                if field in counts:
+                    update_fields.append(f"{field} = :{field}")
+                    update_values[field] = counts[field]
+            
+            if not update_fields:
+                return True  # 업데이트할 내용이 없음
+            
+            query = f"""
+                UPDATE revision_sessions 
+                SET {', '.join(update_fields)}
+                WHERE id = :session_id
+            """
+            
+            self.db.execute(text(query), update_values)
+            self.db.commit()
+            
+            logger.info(f"리비전 세션 진행 상황 업데이트: {session_id}")
+            return True
+            
+        except Exception as e:
+            self.db.rollback()
+            logger.error(f"리비전 세션 진행 상황 업데이트 실패: {e}")
+            raise
+    
+    def complete_session(self, session_id: int, username: str) -> Dict[str, Any]:
+        """리비전 세션 완료 처리"""
+        
+        try:
+            # 세션 상태를 완료로 변경
+            self.db.execute(text("""
+                UPDATE revision_sessions 
+                SET status = 'completed', completed_at = CURRENT_TIMESTAMP
+                WHERE id = :session_id AND status = 'processing'
+            """), {"session_id": session_id})
+            
+            # 완료 로그 기록
+            self.db.execute(text("""
+                INSERT INTO revision_action_logs (
+                    session_id, action_type, action_description, 
+                    executed_by, result, result_message
+                ) VALUES (
+                    :session_id, 'session_complete', '리비전 세션 완료',
+                    :username, 'success', '모든 리비전 처리 완료'
+                )
+            """), {
+                "session_id": session_id,
+                "username": username
+            })
+            
+            self.db.commit()
+            
+            # 최종 상태 조회
+            final_status = self.get_session_status(session_id)
+            
+            logger.info(f"리비전 세션 완료: {session_id}")
+            
+            return {
+                "status": "completed",
+                "session_id": session_id,
+                "final_status": final_status
+            }
+            
+        except Exception as e:
+            self.db.rollback()
+            logger.error(f"리비전 세션 완료 처리 실패: {e}")
+            raise
+    
+    def cancel_session(self, session_id: int, username: str, reason: str = None) -> bool:
+        """리비전 세션 취소"""
+        
+        try:
+            # 세션 상태를 취소로 변경
+            self.db.execute(text("""
+                UPDATE revision_sessions 
+                SET status = 'cancelled', completed_at = CURRENT_TIMESTAMP
+                WHERE id = :session_id AND status = 'processing'
+            """), {"session_id": session_id})
+            
+            # 취소 로그 기록
+            self.db.execute(text("""
+                INSERT INTO revision_action_logs (
+                    session_id, action_type, action_description, 
+                    executed_by, result, result_message
+                ) VALUES (
+                    :session_id, 'session_cancel', '리비전 세션 취소',
+                    :username, 'cancelled', :reason
+                )
+            """), {
+                "session_id": session_id,
+                "username": username,
+                "reason": reason or "사용자 요청에 의한 취소"
+            })
+            
+            self.db.commit()
+            
+            logger.info(f"리비전 세션 취소: {session_id}, 사유: {reason}")
+            return True
+            
+        except Exception as e:
+            self.db.rollback()
+            logger.error(f"리비전 세션 취소 실패: {e}")
+            raise
+    
+    def get_job_revision_history(self, job_no: str) -> List[Dict[str, Any]]:
+        """Job의 리비전 히스토리 조회"""
+        
+        try:
+            sessions = self.db.execute(text("""
+                SELECT 
+                    rs.id, rs.current_revision, rs.previous_revision,
+                    rs.status, rs.created_by, rs.created_at, rs.completed_at,
+                    rs.added_count, rs.removed_count, rs.changed_count,
+                    cf.filename as current_filename,
+                    pf.filename as previous_filename
+                FROM revision_sessions rs
+                LEFT JOIN files cf ON rs.current_file_id = cf.id
+                LEFT JOIN files pf ON rs.previous_file_id = pf.id
+                WHERE rs.job_no = :job_no
+                ORDER BY rs.created_at DESC
+            """), {"job_no": job_no}).fetchall()
+            
+            return [dict(session._mapping) for session in sessions]
+            
+        except Exception as e:
+            logger.error(f"리비전 히스토리 조회 실패: {e}")
+            raise

backend/app/services/structural_classifier.py

@@ -0,0 +1,34 @@
+
+import re
+from typing import Dict
+
+def classify_structural(tag: str, description: str, main_nom: str = "") -> Dict:
+    """
+    형강(STRUCTURAL) 분류기
+    규격 예: H-BEAM 100x100x6x8
+    """
+    desc_upper = description.upper()
+    
+    # 1. 타입 식별
+    struct_type = "UNKNOWN"
+    if "H-BEAM" in desc_upper or "H-SECTION" in desc_upper: struct_type = "H-BEAM"
+    elif "ANGLE" in desc_upper or "L-SECTION" in desc_upper: struct_type = "ANGLE"
+    elif "CHANNEL" in desc_upper or "C-SECTION" in desc_upper: struct_type = "CHANNEL"
+    elif "BEAM" in desc_upper: struct_type = "I-BEAM"
+
+    # 2. 규격 추출
+    # 패턴: 100x100, 100x100x6x8, 50x50x5T, H-200x200
+    dimension = ""
+    # 숫자와 x 또는 *로 구성된 패턴, 앞에 H- 등이 붙을 수 있음
+    dim_match = re.search(r'(?:H-|L-|C-)?(\d+(?:\.\d+)?(?:\s*[X\*]\s*\d+(?:\.\d+)?){1,3})', desc_upper)
+    if dim_match:
+        dimension = dim_match.group(1).replace("*", "x")
+
+    return {
+        "category": "STRUCTURAL",
+        "overall_confidence": 0.9,
+        "details": {
+            "type": struct_type,
+            "dimension": dimension
+        }
+    }

backend/app/services/support_classifier.py

@@ -108,7 +108,22 @@ def classify_support(dat_file: str, description: str, main_nom: str,
     # 4. 사이즈 정보 추출
     size_result = extract_support_size(description, main_nom)
     
-    # 5. 최종 결과 조합
+    # 5. 사용자 요구사항 추출
+    user_requirements = extract_support_user_requirements(description)
+    
+    # 6. 우레탄 블럭슈 두께 정보 추출 및 Material Grade 보강
+    enhanced_material_grade = material_result.get('grade', 'UNKNOWN')
+    if support_type_result.get("support_type") == "URETHANE_BLOCK":
+        # 두께 정보 추출 (40t, 27t 등)
+        thickness_match = re.search(r'(\d+)\s*[tT](?![oO])', description.upper())
+        if thickness_match:
+            thickness = f"{thickness_match.group(1)}t"
+            if enhanced_material_grade == 'UNKNOWN' or not enhanced_material_grade:
+                enhanced_material_grade = thickness
+            elif thickness not in enhanced_material_grade:
+                enhanced_material_grade = f"{enhanced_material_grade} {thickness}"
+    
+    # 7. 최종 결과 조합
     return {
         "category": "SUPPORT",
         
@@ -118,10 +133,10 @@ def classify_support(dat_file: str, description: str, main_nom: str,
         "load_rating": load_result.get("load_rating", ""),
         "load_capacity": load_result.get("capacity", ""),
         
-        # 재질 정보 (공통 모듈)
+        # 재질 정보 (공통 모듈) - 우레탄 블럭슈 두께 정보 포함
         "material": {
             "standard": material_result.get('standard', 'UNKNOWN'),
-            "grade": material_result.get('grade', 'UNKNOWN'),
+            "grade": enhanced_material_grade,
             "material_type": material_result.get('material_type', 'UNKNOWN'),
             "confidence": material_result.get('confidence', 0.0)
         },
@@ -129,6 +144,9 @@ def classify_support(dat_file: str, description: str, main_nom: str,
         # 사이즈 정보
         "size_info": size_result,
         
+        # 사용자 요구사항
+        "user_requirements": user_requirements,
+        
         # 전체 신뢰도
         "overall_confidence": calculate_support_confidence({
             "type": support_type_result.get('confidence', 0),
@@ -183,6 +201,34 @@ def classify_support_type(dat_file: str, description: str) -> Dict:
         "evidence": ["NO_SUPPORT_TYPE_FOUND"]
     }
 
+def extract_support_user_requirements(description: str) -> List[str]:
+    """서포트 사용자 요구사항 추출"""
+    
+    desc_upper = description.upper()
+    requirements = []
+    
+    # 표면처리 관련
+    if 'GALV' in desc_upper or 'GALVANIZED' in desc_upper:
+        requirements.append('GALVANIZED')
+    if 'HDG' in desc_upper or 'HOT DIP' in desc_upper:
+        requirements.append('HOT DIP GALVANIZED')
+    if 'PAINT' in desc_upper or 'PAINTED' in desc_upper:
+        requirements.append('PAINTED')
+    
+    # 재질 관련
+    if 'SS' in desc_upper or 'STAINLESS' in desc_upper:
+        requirements.append('STAINLESS STEEL')
+    if 'CARBON' in desc_upper:
+        requirements.append('CARBON STEEL')
+    
+    # 특수 요구사항
+    if 'FIRE SAFE' in desc_upper:
+        requirements.append('FIRE SAFE')
+    if 'SEISMIC' in desc_upper or '내진' in desc_upper:
+        requirements.append('SEISMIC')
+    
+    return requirements
+
 def classify_load_rating(description: str) -> Dict:
     """하중 등급 분류"""
     

backend/app/services/valve_classifier.py

@@ -89,6 +89,24 @@ VALVE_TYPES = {
         "typical_connections": ["FLANGED", "THREADED"],
         "pressure_range": "150LB ~ 600LB",
         "special_features": ["LUBRICATED", "NON_LUBRICATED"]
+    },
+    
+    "SIGHT_GLASS": {
+        "dat_file_patterns": ["SIGHT_", "SG_"],
+        "description_keywords": ["SIGHT GLASS", "SIGHT", "사이트글라스", "사이트 글라스"],
+        "characteristics": "유체 확인용 관찰창",
+        "typical_connections": ["FLANGED", "THREADED"],
+        "pressure_range": "150LB ~ 600LB",
+        "special_features": ["TRANSPARENT", "VISUAL_INSPECTION"]
+    },
+    
+    "STRAINER": {
+        "dat_file_patterns": ["STRAINER_", "STR_"],
+        "description_keywords": ["STRAINER", "스트레이너", "여과기"],
+        "characteristics": "이물질 여과용",
+        "typical_connections": ["FLANGED", "THREADED"],
+        "pressure_range": "150LB ~ 600LB",
+        "special_features": ["MESH_FILTER", "Y_TYPE", "BASKET_TYPE"]
     }
 }
 
@@ -212,8 +230,13 @@ def classify_valve(dat_file: str, description: str, main_nom: str, length: float
     desc_upper = description.upper()
     dat_upper = dat_file.upper()
     
-    # 1. 밸브 키워드 확인 (재질만 있어도 통합 분류기가 이미 밸브로 분류했으므로 진행)
-    valve_keywords = ['VALVE', 'GATE', 'BALL', 'GLOBE', 'CHECK', 'BUTTERFLY', 'NEEDLE', 'RELIEF', 'SOLENOID', '밸브', '게이트', '볼', '글로브', '체크', '버터플라이', '니들', '릴리프', '솔레노이드']
+    # 1. 사이트 글라스와 스트레이너 우선 확인
+    if 'SIGHT GLASS' in desc_upper or 'STRAINER' in desc_upper or '사이트글라스' in desc_upper or '스트레이너' in desc_upper:
+        # 사이트 글라스와 스트레이너는 항상 밸브로 분류
+        pass
+    
+    # 밸브 키워드 확인 (재질만 있어도 통합 분류기가 이미 밸브로 분류했으므로 진행)
+    valve_keywords = ['VALVE', 'GATE', 'BALL', 'GLOBE', 'CHECK', 'BUTTERFLY', 'NEEDLE', 'RELIEF', 'SOLENOID', 'SIGHT GLASS', 'STRAINER', '밸브', '게이트', '볼', '글로브', '체크', '버터플라이', '니들', '릴리프', '솔레노이드', '사이트글라스', '스트레이너']
     has_valve_keyword = any(keyword in desc_upper or keyword in dat_upper for keyword in valve_keywords)
     
     # 밸브 재질 확인 (A216, A217, A351, A352)

backend/entrypoint.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+set -e
+
+# Wait for DB to be ready (optional, but good practice if not handled by docker-compose)
+# /wait-for-it.sh db:5432 --
+
+# Run migrations
+echo "Running database migrations..."
+alembic upgrade head
+
+# Start application
+echo "Starting application..."
+exec "$@"

backend/exports/PR-20251014-001.json

@@ -0,0 +1,576 @@
+{
+  "request_no": "PR-20251014-001",
+  "job_no": "테스트용",
+  "created_at": "2025-10-14T22:16:10.998006",
+  "materials": [
+    {
+      "material_id": 60768,
+      "description": "PIPE, SMLS, SCH 40S, ASTM A312 TP304",
+      "category": "PIPE",
+      "size": "1/2\"",
+      "material_grade": "ASTM A312 TP304",
+      "quantity": 11,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 60776,
+      "description": "PIPE, SMLS, SCH 80, ASTM A106 B",
+      "category": "PIPE",
+      "size": "3/4\"",
+      "material_grade": "ASTM A106 B",
+      "quantity": 92,
+      "unit": "EA",
+      "user_requirement": ""
+    }
+  ],
+  "grouped_materials": [
+    {
+      "group_key": "PIPE, SMLS, SCH 40S, ASTM A312 TP304|1/2\"|undefined|ASTM A312 TP304",
+      "material_ids": [
+        60768
+      ],
+      "description": "PIPE, SMLS, SCH 40S, ASTM A312 TP304",
+      "category": "PIPE",
+      "size": "1/2\"",
+      "material_grade": "ASTM A312 TP304",
+      "quantity": 11,
+      "unit": "m",
+      "total_length": 1395.1,
+      "pipe_lengths": [
+        {
+          "length": 70,
+          "quantity": 1,
+          "totalLength": 70
+        },
+        {
+          "length": 70,
+          "quantity": 1,
+          "totalLength": 70
+        },
+        {
+          "length": 100,
+          "quantity": 1,
+          "totalLength": 100
+        },
+        {
+          "length": 100,
+          "quantity": 1,
+          "totalLength": 100
+        },
+        {
+          "length": 155,
+          "quantity": 1,
+          "totalLength": 155
+        },
+        {
+          "length": 155,
+          "quantity": 1,
+          "totalLength": 155
+        },
+        {
+          "length": 200,
+          "quantity": 1,
+          "totalLength": 200
+        },
+        {
+          "length": 245.1,
+          "quantity": 1,
+          "totalLength": 245.1
+        },
+        {
+          "length": 100,
+          "quantity": 1,
+          "totalLength": 100
+        },
+        {
+          "length": 100,
+          "quantity": 1,
+          "totalLength": 100
+        },
+        {
+          "length": 100,
+          "quantity": 1,
+          "totalLength": 100
+        }
+      ],
+      "user_requirement": ""
+    },
+    {
+      "group_key": "PIPE, SMLS, SCH 80, ASTM A106 B|3/4\"|undefined|ASTM A106 B",
+      "material_ids": [
+        60776
+      ],
+      "description": "PIPE, SMLS, SCH 80, ASTM A106 B",
+      "category": "PIPE",
+      "size": "3/4\"",
+      "material_grade": "ASTM A106 B",
+      "quantity": 92,
+      "unit": "m",
+      "total_length": 7920.2,
+      "pipe_lengths": [
+        {
+          "length": 60,
+          "quantity": 1,
+          "totalLength": 60
+        },
+        {
+          "length": 60,
+          "quantity": 1,
+          "totalLength": 60
+        },
+        {
+          "length": 60,
+          "quantity": 1,
+          "totalLength": 60
+        },
+        {
+          "length": 60,
+          "quantity": 1,
+          "totalLength": 60
+        },
+        {
+          "length": 43.3,
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backend/exports/PR-20251016-001.json

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backend/exports/PR-20251016-002.json

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+      "material_grade": "ASTM A105",
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+      "unit": "EA",
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+      "size": "3\" x 3/4\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 3,
+      "unit": "EA",
+      "user_requirement": ""
+    },
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+      "description": "SOCK O LET, SW, 3000LB, ASTM A105",
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+      "material_grade": "ASTM A105",
+      "quantity": 1,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 5446,
+      "description": "SOCK O LET, SW, 3000LB, ASTM A105",
+      "category": "FITTING",
+      "size": "4\" x 3/4\"",
+      "material_grade": "ASTM A105",
+      "quantity": 1,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 5447,
+      "description": "SOCK O LET, SW, 3000LB, ASTM A105",
+      "category": "FITTING",
+      "size": "6\" x 1 1/2\"",
+      "material_grade": "ASTM A105",
+      "quantity": 2,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 5449,
+      "description": "SOCK O LET, SW, 3000LB, ASTM A105",
+      "category": "FITTING",
+      "size": "6\" x 3/4\"",
+      "material_grade": "ASTM A105",
+      "quantity": 1,
+      "unit": "EA",
+      "user_requirement": ""
+    }
+  ],
+  "grouped_materials": []
+}

backend/exports/PR-20251016-003.json

@@ -0,0 +1,168 @@
+{
+  "request_no": "PR-20251016-003",
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+  "created_at": "2025-10-16T06:01:25.896639",
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+      "quantity": 11,
+      "unit": "EA",
+      "user_requirement": ""
+    },
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+      "description": "PIPE, SMLS, SCH 80, ASTM A106 B",
+      "category": "PIPE",
+      "size": "3/4\"",
+      "material_grade": "ASTM A106 B",
+      "quantity": 92,
+      "unit": "EA",
+      "user_requirement": ""
+    },
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+      "description": "PIPE, SMLS, SCH 40S, ASTM A312 TP304",
+      "category": "PIPE",
+      "size": "1\"",
+      "material_grade": "ASTM A312 TP304",
+      "quantity": 23,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
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+      "description": "PIPE, SMLS, SCH 80, ASTM A106 B",
+      "category": "PIPE",
+      "size": "1\"",
+      "material_grade": "ASTM A106 B",
+      "quantity": 139,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 7113,
+      "description": "PIPE, SMLS, SCH 40S, ASTM A312 TP304",
+      "category": "PIPE",
+      "size": "1 1/2\"",
+      "material_grade": "ASTM A312 TP304",
+      "quantity": 14,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 7127,
+      "description": "PIPE, SMLS, SCH 80, ASTM A106 B",
+      "category": "PIPE",
+      "size": "1 1/2\"",
+      "material_grade": "ASTM A106 B",
+      "quantity": 98,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
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+      "description": "PIPE, SMLS, SCH 80, ASTM A106 B",
+      "category": "PIPE",
+      "size": "1/2\"",
+      "material_grade": "ASTM A106 B",
+      "quantity": 82,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
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+      "description": "PIPE, SMLS, SCH 40S, ASTM A312 TP304",
+      "category": "PIPE",
+      "size": "10\"",
+      "material_grade": "ASTM A312 TP304",
+      "quantity": 4,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
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+      "description": "PIPE, SMLS, SCH 40S, ASTM A312 TP304",
+      "category": "PIPE",
+      "size": "12\"",
+      "material_grade": "ASTM A312 TP304",
+      "quantity": 1,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
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+      "description": "PIPE, SMLS, SCH 40, ASTM A106 B",
+      "category": "PIPE",
+      "size": "2\"",
+      "material_grade": "ASTM A106 B",
+      "quantity": 50,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
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+      "description": "PIPE, SMLS, SCH 40S, ASTM A312 TP304",
+      "category": "PIPE",
+      "size": "2\"",
+      "material_grade": "ASTM A312 TP304",
+      "quantity": 9,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
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+      "description": "PIPE, SMLS, SCH 40, ASTM A106 B",
+      "category": "PIPE",
+      "size": "3\"",
+      "material_grade": "ASTM A106 B",
+      "quantity": 25,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
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+      "description": "PIPE, SMLS, SCH 40S, ASTM A312 TP304",
+      "category": "PIPE",
+      "size": "3\"",
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+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 7562,
+      "description": "PIPE, SMLS, SCH 40S, ASTM A312 TP304",
+      "category": "PIPE",
+      "size": "3/4\"",
+      "material_grade": "ASTM A312 TP304",
+      "quantity": 15,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 7665,
+      "description": "PIPE, SMLS, SCH 40, ASTM A106 B",
+      "category": "PIPE",
+      "size": "4\"",
+      "material_grade": "ASTM A106 B",
+      "quantity": 12,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 7677,
+      "description": "PIPE, SMLS, SCH 40, ASTM A106 B",
+      "category": "PIPE",
+      "size": "6\"",
+      "material_grade": "ASTM A106 B",
+      "quantity": 13,
+      "unit": "EA",
+      "user_requirement": ""
+    }
+  ],
+  "grouped_materials": []
+}

backend/exports/PR-20251016-004.json

@@ -0,0 +1,408 @@
+{
+  "request_no": "PR-20251016-004",
+  "job_no": "5",
+  "created_at": "2025-10-16T05:24:45.921468",
+  "materials": [
+    {
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+      "description": "FLG WELD NECK RF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "10\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 5,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 118839,
+      "description": "FLG WELD NECK RF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "12\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 1,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 118840,
+      "description": "FLG WELD NECK RF SCH 40, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "2\"",
+      "material_grade": "ASTM A105",
+      "quantity": 36,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 118876,
+      "description": "FLG WELD NECK RF SCH 40, 300LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "2\"",
+      "material_grade": "ASTM A105",
+      "quantity": 6,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 118882,
+      "description": "FLG WELD NECK RF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "2\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 7,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 118890,
+      "description": "FLG WELD NECK RF SCH 40, 600LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "3\"",
+      "material_grade": "ASTM A105",
+      "quantity": 8,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 118895,
+      "description": "FLG WELD NECK RF SCH 40S, 600LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "3\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 2,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 118897,
+      "description": "FLG WELD NECK RF SCH 40, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "3\"",
+      "material_grade": "ASTM A105",
+      "quantity": 12,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 118909,
+      "description": "FLG WELD NECK RF SCH 40, 300LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "3\"",
+      "material_grade": "ASTM A105",
+      "quantity": 2,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 118914,
+      "description": "FLG WELD NECK RF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "3\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 9,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 118923,
+      "description": "FLG WELD NECK RF SCH 40, 300LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "4\"",
+      "material_grade": "ASTM A105",
+      "quantity": 3,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 118926,
+      "description": "FLG WELD NECK RF SCH 40, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "6\"",
+      "material_grade": "ASTM A105",
+      "quantity": 10,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 118936,
+      "description": "FLG SWRF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "1/2\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 14,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 118948,
+      "description": "FLG SWRF SCH 80, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "3/4\"",
+      "material_grade": "ASTM A105",
+      "quantity": 15,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 118952,
+      "description": "FLG SWRF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "1\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 9,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 118953,
+      "description": "FLG SWRF SCH 80, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1\"",
+      "material_grade": "ASTM A105",
+      "quantity": 66,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 118957,
+      "description": "FLG SWRF SCH 80, 600LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1\"",
+      "material_grade": "ASTM A105",
+      "quantity": 6,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 118959,
+      "description": "FLG SWRF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "1 1/2\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 8,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 118967,
+      "description": "FLG SWRF SCH 80, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1 1/2\"",
+      "material_grade": "ASTM A105",
+      "quantity": 40,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119003,
+      "description": "FLG SWRF SCH 80, 600LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1 1/2\"",
+      "material_grade": "ASTM A105",
+      "quantity": 5,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119008,
+      "description": "RED. FLG SWRF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "1 1/2\" x 3/4\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 2,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119010,
+      "description": "RED. FLG SWRF SCH 80, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1 1/2\" x 3/4\"",
+      "material_grade": "ASTM A105",
+      "quantity": 4,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119014,
+      "description": "RED. FLG SWRF SCH 80, 600LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1 1/2\" x 3/4\"",
+      "material_grade": "ASTM A105",
+      "quantity": 2,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119024,
+      "description": "FLG SWRF SCH 40S, 600LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "1\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 1,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119092,
+      "description": "RED. FLG SWRF SCH 80, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1\" x 3/4\"",
+      "material_grade": "ASTM A105",
+      "quantity": 1,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119097,
+      "description": "FLG SWRF SCH 80, 300LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1 1/2\"",
+      "material_grade": "ASTM A105",
+      "quantity": 3,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119102,
+      "description": "FLG SWRF SCH 80, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1/2\"",
+      "material_grade": "ASTM A105",
+      "quantity": 57,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119159,
+      "description": "FLG SWRF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "3/4\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 7,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119166,
+      "description": "FLG SWRF SCH 40S, 300LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "3/4\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 1,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119167,
+      "description": "FLG SWRF SCH 40S, 600LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "3/4\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 1,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119179,
+      "description": "FLG SWRF SCH 80, 300LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "3/4\"",
+      "material_grade": "ASTM A105",
+      "quantity": 2,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119181,
+      "description": "FLG SWRF SCH 80, 600LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "3/4\"",
+      "material_grade": "ASTM A105",
+      "quantity": 5,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119985,
+      "description": "ORIFICE, 150LB",
+      "category": "FLANGE",
+      "size": "10\"",
+      "material_grade": "-",
+      "quantity": 1,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119987,
+      "description": "WOOD ORIFICE, 300LB",
+      "category": "FLANGE",
+      "size": "10\"",
+      "material_grade": "-",
+      "quantity": 2,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119989,
+      "description": "WOOD ORIFICE, 600LB",
+      "category": "FLANGE",
+      "size": "3\"",
+      "material_grade": "-",
+      "quantity": 1,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119990,
+      "description": "WOOD ORIFICE, 300LB",
+      "category": "FLANGE",
+      "size": "4\"",
+      "material_grade": "-",
+      "quantity": 2,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119992,
+      "description": "WOOD ORIFICE, 300LB",
+      "category": "FLANGE",
+      "size": "5\"",
+      "material_grade": "-",
+      "quantity": 1,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119993,
+      "description": "WOOD ORIFICE, 600LB",
+      "category": "FLANGE",
+      "size": "5\"",
+      "material_grade": "-",
+      "quantity": 1,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119994,
+      "description": "WOOD ORIFICE, 150LB",
+      "category": "FLANGE",
+      "size": "6\"",
+      "material_grade": "-",
+      "quantity": 2,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 119996,
+      "description": "WOOD ORIFICE, 300LB",
+      "category": "FLANGE",
+      "size": "8\"",
+      "material_grade": "-",
+      "quantity": 2,
+      "unit": "EA",
+      "user_requirement": ""
+    }
+  ],
+  "grouped_materials": []
+}

backend/requirements.txt

@@ -1,41 +1,63 @@
-# FastAPI 웹 프레임워크
-fastapi==0.104.1
-uvicorn[standard]==0.24.0
-
-# 데이터베이스
-sqlalchemy==2.0.23
-psycopg2-binary==2.9.9
 alembic==1.13.1
-
-# 파일 처리
-pandas==2.1.4
+annotated-types==0.7.0
+anyio==3.7.1
+async-timeout==5.0.1
+bcrypt==4.1.2
+black==23.11.0
+certifi==2026.1.4
+click==8.1.8
+coverage==7.10.7
+dnspython==2.7.0
+email-validator==2.3.0
+et_xmlfile==2.0.0
+exceptiongroup==1.3.1
+fastapi==0.104.1
+flake8==6.1.0
+h11==0.16.0
+httpcore==1.0.9
+httptools==0.7.1
+httpx==0.25.2
+idna==3.11
+iniconfig==2.1.0
+Mako==1.3.10
+MarkupSafe==3.0.3
+mccabe==0.7.0
+mypy_extensions==1.1.0
+numpy==1.26.4
 openpyxl==3.1.2
-xlrd>=2.0.1
-python-multipart==0.0.6
-
-# 데이터 검증
+packaging==25.0
+pandas==2.1.4
+pathspec==1.0.1
+platformdirs==4.4.0
+pluggy==1.6.0
+psycopg2-binary==2.9.9
+pycodestyle==2.11.1
 pydantic==2.5.2
 pydantic-settings==2.1.0
-
-# 기타 유틸리티
-python-dotenv==1.0.0
-httpx==0.25.2
-redis==5.0.1
-python-magic==0.4.27
-
-# 인증 시스템
+pydantic_core==2.14.5
+pyflakes==3.1.0
 PyJWT==2.8.0
-bcrypt==4.1.2
-python-multipart==0.0.6
-email-validator==2.3.0
-
-# 개발 도구
 pytest==7.4.3
 pytest-asyncio==0.21.1
 pytest-cov==4.1.0
 pytest-mock==3.12.0
-black==23.11.0
-flake8==6.1.0
+python-dateutil==2.9.0.post0
+python-dotenv==1.0.0
+python-magic==0.4.27
 python-multipart==0.0.6
-openpyxl==3.1.2
+pytz==2025.2
+PyYAML==6.0.3
+RapidFuzz==3.13.0
+redis==5.0.1
+six==1.17.0
+sniffio==1.3.1
+SQLAlchemy==2.0.23
+starlette==0.27.0
+tomli==2.3.0
+typing_extensions==4.15.0
+tzdata==2025.3
+uvicorn==0.24.0
+uvloop==0.22.1
+watchfiles==1.1.1
+websockets==15.0.1
 xlrd==2.0.1

backend/scripts/26_add_user_status_column.sql

@@ -0,0 +1,28 @@
+-- users 테이블에 status 컬럼 추가 및 기존 데이터 마이그레이션
+
+-- 1. status 컬럼 추가 (기본값은 'active')
+ALTER TABLE users 
+ADD COLUMN IF NOT EXISTS status VARCHAR(20) DEFAULT 'active';
+
+-- 2. status 컬럼에 CHECK 제약 조건 추가
+ALTER TABLE users 
+ADD CONSTRAINT users_status_check 
+CHECK (status IN ('pending', 'active', 'suspended', 'deleted'));
+
+-- 3. 기존 데이터 마이그레이션
+-- is_active가 false인 사용자는 'pending'으로
+-- is_active가 true인 사용자는 'active'로
+UPDATE users 
+SET status = CASE 
+    WHEN is_active = FALSE THEN 'pending'
+    WHEN is_active = TRUE THEN 'active'
+    ELSE 'active'
+END;
+
+-- 4. status 컬럼에 인덱스 추가 (조회 성능 향상)
+CREATE INDEX IF NOT EXISTS idx_users_status ON users(status);
+
+-- 5. 향후 is_active 컬럼은 deprecated로 간주
+-- 하지만 하위 호환성을 위해 당분간 유지
+COMMENT ON COLUMN users.status IS 'User account status: pending, active, suspended, deleted';
+COMMENT ON COLUMN users.is_active IS 'DEPRECATED: Use status column instead. Kept for backward compatibility.';

backend/scripts/27_add_purchase_tracking.sql

@@ -0,0 +1,135 @@
+-- 엑셀 내보내기 이력 및 구매 상태 관리 테이블
+
+-- 1. 엑셀 내보내기 이력 테이블
+CREATE TABLE IF NOT EXISTS excel_export_history (
+    export_id SERIAL PRIMARY KEY,
+    file_id INTEGER REFERENCES files(id) ON DELETE CASCADE,
+    job_no VARCHAR(50) REFERENCES jobs(job_no),
+    exported_by INTEGER REFERENCES users(user_id),
+    export_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    export_type VARCHAR(50), -- 'full', 'category', 'filtered'
+    category VARCHAR(50), -- PIPE, FLANGE, VALVE 등
+    material_count INTEGER,
+    file_name VARCHAR(255),
+    notes TEXT,
+    -- 메타데이터
+    filters_applied JSONB, -- 적용된 필터 조건들
+    export_options JSONB -- 내보내기 옵션들
+);
+
+-- 2. 내보낸 자재 상세 (어떤 자재들이 내보내졌는지 추적)
+CREATE TABLE IF NOT EXISTS exported_materials (
+    id SERIAL PRIMARY KEY,
+    export_id INTEGER REFERENCES excel_export_history(export_id) ON DELETE CASCADE,
+    material_id INTEGER REFERENCES materials(id),
+    purchase_status VARCHAR(50) DEFAULT 'pending', -- pending, requested, ordered, received, cancelled
+    purchase_request_no VARCHAR(100), -- 구매요청 번호
+    purchase_order_no VARCHAR(100), -- 구매주문 번호
+    requested_date TIMESTAMP,
+    ordered_date TIMESTAMP,
+    expected_date DATE,
+    received_date TIMESTAMP,
+    quantity_exported INTEGER, -- 내보낸 수량
+    quantity_ordered INTEGER, -- 주문 수량
+    quantity_received INTEGER, -- 입고 수량
+    unit_price DECIMAL(15, 2),
+    total_price DECIMAL(15, 2),
+    vendor_name VARCHAR(255),
+    notes TEXT,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_by INTEGER REFERENCES users(user_id)
+);
+
+-- 3. 구매 상태 이력 (상태 변경 추적)
+CREATE TABLE IF NOT EXISTS purchase_status_history (
+    history_id SERIAL PRIMARY KEY,
+    exported_material_id INTEGER REFERENCES exported_materials(id) ON DELETE CASCADE,
+    material_id INTEGER REFERENCES materials(id),
+    previous_status VARCHAR(50),
+    new_status VARCHAR(50),
+    changed_by INTEGER REFERENCES users(user_id),
+    changed_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    reason TEXT,
+    metadata JSONB -- 추가 정보 (예: 문서 번호, 승인자 등)
+);
+
+-- 4. 구매 문서 관리
+CREATE TABLE IF NOT EXISTS purchase_documents (
+    document_id SERIAL PRIMARY KEY,
+    export_id INTEGER REFERENCES excel_export_history(export_id),
+    document_type VARCHAR(50), -- 'purchase_request', 'purchase_order', 'invoice', 'receipt'
+    document_no VARCHAR(100),
+    document_date DATE,
+    file_path VARCHAR(500),
+    uploaded_by INTEGER REFERENCES users(user_id),
+    uploaded_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    notes TEXT
+);
+
+-- 인덱스 추가
+CREATE INDEX IF NOT EXISTS idx_export_history_file_id ON excel_export_history(file_id);
+CREATE INDEX IF NOT EXISTS idx_export_history_job_no ON excel_export_history(job_no);
+CREATE INDEX IF NOT EXISTS idx_export_history_date ON excel_export_history(export_date);
+CREATE INDEX IF NOT EXISTS idx_exported_materials_export_id ON exported_materials(export_id);
+CREATE INDEX IF NOT EXISTS idx_exported_materials_material_id ON exported_materials(material_id);
+CREATE INDEX IF NOT EXISTS idx_exported_materials_status ON exported_materials(purchase_status);
+CREATE INDEX IF NOT EXISTS idx_exported_materials_pr_no ON exported_materials(purchase_request_no);
+CREATE INDEX IF NOT EXISTS idx_exported_materials_po_no ON exported_materials(purchase_order_no);
+CREATE INDEX IF NOT EXISTS idx_purchase_history_material ON purchase_status_history(material_id);
+CREATE INDEX IF NOT EXISTS idx_purchase_history_date ON purchase_status_history(changed_at);
+
+-- 뷰 생성: 구매 상태별 자재 현황
+CREATE OR REPLACE VIEW v_purchase_status_summary AS
+SELECT 
+    em.purchase_status,
+    COUNT(DISTINCT em.material_id) as material_count,
+    COUNT(DISTINCT em.export_id) as export_count,
+    SUM(em.quantity_exported) as total_quantity_exported,
+    SUM(em.quantity_ordered) as total_quantity_ordered,
+    SUM(em.quantity_received) as total_quantity_received,
+    SUM(em.total_price) as total_amount,
+    MAX(em.updated_at) as last_updated
+FROM exported_materials em
+GROUP BY em.purchase_status;
+
+-- 뷰 생성: 자재별 최신 구매 상태
+CREATE OR REPLACE VIEW v_material_latest_purchase_status AS
+SELECT DISTINCT ON (m.id)
+    m.id as material_id,
+    m.original_description,
+    m.classified_category,
+    em.purchase_status,
+    em.purchase_request_no,
+    em.purchase_order_no,
+    em.vendor_name,
+    em.expected_date,
+    em.quantity_ordered,
+    em.quantity_received,
+    em.updated_at as status_updated_at,
+    eeh.export_date as last_exported_date
+FROM materials m
+LEFT JOIN exported_materials em ON m.id = em.material_id
+LEFT JOIN excel_export_history eeh ON em.export_id = eeh.export_id
+ORDER BY m.id, em.updated_at DESC;
+
+-- 트리거: updated_at 자동 업데이트
+CREATE OR REPLACE FUNCTION update_exported_materials_updated_at()
+RETURNS TRIGGER AS $$
+BEGIN
+    NEW.updated_at = CURRENT_TIMESTAMP;
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER update_exported_materials_updated_at_trigger
+BEFORE UPDATE ON exported_materials
+FOR EACH ROW
+EXECUTE FUNCTION update_exported_materials_updated_at();
+
+-- 코멘트 추가
+COMMENT ON TABLE excel_export_history IS '엑셀 내보내기 이력 관리';
+COMMENT ON TABLE exported_materials IS '내보낸 자재의 구매 상태 추적';
+COMMENT ON TABLE purchase_status_history IS '구매 상태 변경 이력';
+COMMENT ON TABLE purchase_documents IS '구매 관련 문서 관리';
+COMMENT ON COLUMN exported_materials.purchase_status IS 'pending: 구매신청 전, requested: 구매신청, ordered: 구매주문, received: 입고완료, cancelled: 취소';

backend/scripts/28_add_purchase_requests.sql

@@ -0,0 +1,44 @@
+-- 구매신청 관리 테이블
+
+-- 구매신청 그룹 (같이 신청한 항목들의 묶음)
+CREATE TABLE IF NOT EXISTS purchase_requests (
+    request_id SERIAL PRIMARY KEY,
+    request_no VARCHAR(50) UNIQUE, -- PR-20241014-001 형식
+    file_id INTEGER REFERENCES files(id),
+    job_no VARCHAR(50) REFERENCES jobs(job_no),
+    category VARCHAR(50),
+    material_count INTEGER,
+    excel_file_path VARCHAR(500), -- 저장된 엑셀 파일 경로
+    requested_by INTEGER REFERENCES users(user_id),
+    requested_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    status VARCHAR(20) DEFAULT 'requested', -- requested, ordered, received
+    notes TEXT
+);
+
+-- 구매신청 자재 상세
+CREATE TABLE IF NOT EXISTS purchase_request_items (
+    item_id SERIAL PRIMARY KEY,
+    request_id INTEGER REFERENCES purchase_requests(request_id) ON DELETE CASCADE,
+    material_id INTEGER REFERENCES materials(id),
+    quantity INTEGER,
+    unit VARCHAR(20),
+    user_requirement TEXT,
+    is_ordered BOOLEAN DEFAULT FALSE,
+    is_received BOOLEAN DEFAULT FALSE,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+-- 인덱스
+CREATE INDEX IF NOT EXISTS idx_purchase_requests_file_id ON purchase_requests(file_id);
+CREATE INDEX IF NOT EXISTS idx_purchase_requests_job_no ON purchase_requests(job_no);
+CREATE INDEX IF NOT EXISTS idx_purchase_requests_status ON purchase_requests(status);
+CREATE INDEX IF NOT EXISTS idx_purchase_request_items_request_id ON purchase_request_items(request_id);
+CREATE INDEX IF NOT EXISTS idx_purchase_request_items_material_id ON purchase_request_items(material_id);
+
+-- 뷰: 구매신청된 자재 ID 목록
+CREATE OR REPLACE VIEW v_requested_material_ids AS
+SELECT DISTINCT material_id
+FROM purchase_request_items;
+
+COMMENT ON TABLE purchase_requests IS '구매신청 그룹 관리';
+COMMENT ON TABLE purchase_request_items IS '구매신청 자재 상세';

backend/scripts/29_add_revision_status.sql

@@ -0,0 +1,20 @@
+-- 리비전 관리 개선: 자재 상태 추적
+-- 리비전 업로드 시 삭제된 자재의 상태를 추적
+
+-- materials 테이블에 revision_status 컬럼 추가
+ALTER TABLE materials ADD COLUMN IF NOT EXISTS revision_status VARCHAR(20) DEFAULT 'active';
+-- 가능한 값: 'active', 'inventory', 'deleted_not_purchased', 'changed'
+
+-- revision_status 설명:
+-- 'active': 정상 활성 자재 (기본값)
+-- 'inventory': 재고품 (구매신청 후 리비전에서 삭제됨 - 연노랑색 표시)
+-- 'deleted_not_purchased': 구매신청 전 삭제됨 (숨김 처리)
+-- 'changed': 변경된 자재 (추가 구매 필요)
+
+-- 인덱스 추가 (성능 최적화)
+CREATE INDEX IF NOT EXISTS idx_materials_revision_status ON materials(revision_status);
+CREATE INDEX IF NOT EXISTS idx_materials_drawing_name ON materials(drawing_name);
+CREATE INDEX IF NOT EXISTS idx_materials_line_no ON materials(line_no);
+
+COMMENT ON COLUMN materials.revision_status IS '리비전 자재 상태: active(활성), inventory(재고품), deleted_not_purchased(삭제됨), changed(변경됨)';
+

backend/scripts/create_missing_tables.py

@@ -0,0 +1,654 @@
+#!/usr/bin/env python3
+"""
+누락된 테이블 생성 스크립트
+- support_details
+- special_material_details  
+- purchase_requests
+- purchase_request_items
+"""
+
+import sys
+import os
+import psycopg2
+from psycopg2.extras import RealDictCursor
+import bcrypt
+
+# 프로젝트 루트를 Python path에 추가
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+def get_db_connection():
+    """데이터베이스 연결"""
+    try:
+        # Docker 환경에서는 서비스명으로 연결
+        conn = psycopg2.connect(
+            host="tk-mp-postgres",
+            port="5432",
+            database="tk_mp_bom",
+            user="tkmp_user",
+            password="tkmp_password_2025"
+        )
+        return conn
+    except Exception as e:
+        print(f"❌ DB 연결 실패: {e}")
+        return None
+
+def create_admin_user(cursor):
+    """기본 admin 계정 생성"""
+    try:
+        # admin 계정이 이미 있는지 확인
+        cursor.execute("SELECT COUNT(*) FROM users WHERE username = 'admin';")
+        if cursor.fetchone()[0] > 0:
+            print("✅ admin 계정이 이미 존재합니다.")
+            return
+        
+        # bcrypt로 비밀번호 해시 생성
+        password = "admin123"
+        hashed_password = bcrypt.hashpw(password.encode('utf-8'), bcrypt.gensalt()).decode('utf-8')
+        
+        # admin 계정 생성
+        cursor.execute("""
+            INSERT INTO users (
+                username, password, name, email, role, access_level, 
+                is_active, status, department, position
+            ) VALUES (
+                'admin', %s, 'System Administrator', 'admin@example.com', 
+                'admin', 'admin', true, 'active', 'IT', 'Administrator'
+            );
+        """, (hashed_password,))
+        
+        print("✅ admin 계정 생성 완료 (username: admin, password: admin123)")
+        
+    except Exception as e:
+        print(f"⚠️ admin 계정 생성 실패: {e}")
+
+def add_missing_columns(cursor):
+    """누락된 컬럼들 추가"""
+    try:
+        print("🔧 누락된 컬럼 확인 및 추가 중...")
+        
+        # users 테이블에 status 컬럼 확인 및 추가
+        cursor.execute("""
+            SELECT column_name 
+            FROM information_schema.columns 
+            WHERE table_name = 'users' AND column_name = 'status';
+        """)
+        
+        if not cursor.fetchone():
+            print("➕ users 테이블에 status 컬럼 추가 중...")
+            cursor.execute("""
+                ALTER TABLE users ADD COLUMN status VARCHAR(20) DEFAULT 'active';
+            """)
+            print("✅ users.status 컬럼 추가 완료")
+        else:
+            print("✅ users.status 컬럼이 이미 존재합니다")
+        
+        # files 테이블에 누락된 컬럼들 확인 및 추가
+        files_columns = {
+            'job_no': 'VARCHAR(50)',
+            'bom_name': 'VARCHAR(255)',
+            'description': 'TEXT',
+            'parsed_count': 'INTEGER DEFAULT 0',
+            'classification_completed': 'BOOLEAN DEFAULT FALSE'
+        }
+        
+        for column_name, column_type in files_columns.items():
+            cursor.execute("""
+                SELECT column_name 
+                FROM information_schema.columns 
+                WHERE table_name = 'files' AND column_name = %s;
+            """, (column_name,))
+            
+            if not cursor.fetchone():
+                print(f"➕ files 테이블에 {column_name} 컬럼 추가 중...")
+                cursor.execute(f"""
+                    ALTER TABLE files ADD COLUMN {column_name} {column_type};
+                """)
+                print(f"✅ files.{column_name} 컬럼 추가 완료")
+            else:
+                print(f"✅ files.{column_name} 컬럼이 이미 존재합니다")
+        
+        # materials 테이블에 누락된 컬럼들 확인 및 추가
+        materials_columns = {
+            'main_nom': 'VARCHAR(50)',
+            'red_nom': 'VARCHAR(50)',
+            'full_material_grade': 'TEXT',
+            'row_number': 'INTEGER',
+            'length': 'NUMERIC(10,3)',
+            'purchase_confirmed': 'BOOLEAN DEFAULT FALSE',
+            'confirmed_quantity': 'NUMERIC(10,3)',
+            'purchase_status': 'VARCHAR(20)',
+            'purchase_confirmed_by': 'VARCHAR(100)',
+            'purchase_confirmed_at': 'TIMESTAMP',
+            'revision_status': 'VARCHAR(20)',
+            'material_hash': 'VARCHAR(64)',
+            'normalized_description': 'TEXT',
+            'drawing_reference': 'VARCHAR(100)',
+            'notes': 'TEXT',
+            'created_at': 'TIMESTAMP DEFAULT CURRENT_TIMESTAMP',
+            'brand': 'VARCHAR(100)',
+            'user_requirement': 'TEXT',
+            'is_active': 'BOOLEAN DEFAULT TRUE',
+            'total_length': 'NUMERIC(10,3)'
+        }
+        
+        for column_name, column_type in materials_columns.items():
+            cursor.execute("""
+                SELECT column_name 
+                FROM information_schema.columns 
+                WHERE table_name = 'materials' AND column_name = %s;
+            """, (column_name,))
+            
+            if not cursor.fetchone():
+                print(f"➕ materials 테이블에 {column_name} 컬럼 추가 중...")
+                cursor.execute(f"""
+                    ALTER TABLE materials ADD COLUMN {column_name} {column_type};
+                """)
+                print(f"✅ materials.{column_name} 컬럼 추가 완료")
+            else:
+                print(f"✅ materials.{column_name} 컬럼이 이미 존재합니다")
+        
+        # purchase_requests 테이블에 누락된 컬럼들 확인 및 추가
+        purchase_requests_columns = {
+            'file_id': 'INTEGER REFERENCES files(id)'
+        }
+        
+        for column_name, column_type in purchase_requests_columns.items():
+            cursor.execute("""
+                SELECT column_name 
+                FROM information_schema.columns 
+                WHERE table_name = 'purchase_requests' AND column_name = %s;
+            """, (column_name,))
+            
+            if not cursor.fetchone():
+                print(f"➕ purchase_requests 테이블에 {column_name} 컬럼 추가 중...")
+                cursor.execute(f"""
+                    ALTER TABLE purchase_requests ADD COLUMN {column_name} {column_type};
+                """)
+                print(f"✅ purchase_requests.{column_name} 컬럼 추가 완료")
+            else:
+                print(f"✅ purchase_requests.{column_name} 컬럼이 이미 존재합니다")
+        
+        # material_purchase_tracking 테이블에 누락된 컬럼들 확인 및 추가
+        mpt_columns = {
+            'description': 'TEXT',
+            'purchase_status': 'VARCHAR(20) DEFAULT \'pending\''
+        }
+        
+        for column_name, column_type in mpt_columns.items():
+            cursor.execute("""
+                SELECT column_name 
+                FROM information_schema.columns 
+                WHERE table_name = 'material_purchase_tracking' AND column_name = %s;
+            """, (column_name,))
+            
+            if not cursor.fetchone():
+                print(f"➕ material_purchase_tracking 테이블에 {column_name} 컬럼 추가 중...")
+                cursor.execute(f"""
+                    ALTER TABLE material_purchase_tracking ADD COLUMN {column_name} {column_type};
+                """)
+                print(f"✅ material_purchase_tracking.{column_name} 컬럼 추가 완료")
+            else:
+                print(f"✅ material_purchase_tracking.{column_name} 컬럼이 이미 존재합니다")
+        
+        # purchase_requests 테이블에 누락된 컬럼들 확인 및 추가
+        purchase_requests_columns = {
+            'file_id': 'INTEGER REFERENCES files(id)',
+            'category': 'VARCHAR(50)',
+            'material_count': 'INTEGER DEFAULT 0',
+            'excel_file_path': 'VARCHAR(500)'
+        }
+        
+        for column_name, column_type in purchase_requests_columns.items():
+            cursor.execute("""
+                SELECT column_name 
+                FROM information_schema.columns 
+                WHERE table_name = 'purchase_requests' AND column_name = %s;
+            """, (column_name,))
+            
+            if not cursor.fetchone():
+                print(f"➕ purchase_requests 테이블에 {column_name} 컬럼 추가 중...")
+                cursor.execute(f"""
+                    ALTER TABLE purchase_requests ADD COLUMN {column_name} {column_type};
+                """)
+                print(f"✅ purchase_requests.{column_name} 컬럼 추가 완료")
+            else:
+                print(f"✅ purchase_requests.{column_name} 컬럼이 이미 존재합니다")
+        
+        # purchase_request_items 테이블에 누락된 컬럼들 확인 및 추가
+        purchase_request_items_columns = {
+            'user_requirement': 'TEXT',
+            'description': 'TEXT',
+            'category': 'VARCHAR(50)',
+            'subcategory': 'VARCHAR(100)',
+            'material_grade': 'VARCHAR(50)',
+            'size_spec': 'VARCHAR(50)',
+            'drawing_name': 'VARCHAR(100)',
+            'notes': 'TEXT',
+            'is_ordered': 'BOOLEAN DEFAULT FALSE',
+            'is_received': 'BOOLEAN DEFAULT FALSE'
+        }
+        
+        for column_name, column_type in purchase_request_items_columns.items():
+            cursor.execute("""
+                SELECT column_name 
+                FROM information_schema.columns 
+                WHERE table_name = 'purchase_request_items' AND column_name = %s;
+            """, (column_name,))
+            
+            if not cursor.fetchone():
+                print(f"➕ purchase_request_items 테이블에 {column_name} 컬럼 추가 중...")
+                cursor.execute(f"""
+                    ALTER TABLE purchase_request_items ADD COLUMN {column_name} {column_type};
+                """)
+                print(f"✅ purchase_request_items.{column_name} 컬럼 추가 완료")
+            else:
+                print(f"✅ purchase_request_items.{column_name} 컬럼이 이미 존재합니다")
+        
+        print("✅ 모든 누락된 컬럼 추가 완료!")
+            
+    except Exception as e:
+        print(f"⚠️ 컬럼 추가 실패: {e}")
+
+def create_missing_tables():
+    """누락된 테이블들 생성 (처음 설치 시에만)"""
+    
+    conn = get_db_connection()
+    if not conn:
+        return False
+    
+    try:
+        cursor = conn.cursor()
+        
+        # 이미 설치되어 있는지 확인 (핵심 테이블들이 모두 존재하는지 체크)
+        print("🔍 기존 설치 상태 확인 중...")
+        cursor.execute("""
+            SELECT COUNT(*) FROM information_schema.tables 
+            WHERE table_schema = 'public' 
+            AND table_name IN ('support_details', 'special_material_details', 'purchase_requests', 'purchase_request_items');
+        """)
+        
+        existing_tables = cursor.fetchone()[0]
+        
+        if existing_tables == 4:
+            print("✅ 모든 테이블이 이미 존재합니다.")
+            
+            # 컬럼 체크는 항상 수행
+            print("🔧 누락된 컬럼 확인 중...")
+            add_missing_columns(cursor)
+            
+            # admin 계정 확인
+            cursor.execute("SELECT COUNT(*) FROM users WHERE username = 'admin';")
+            admin_exists = cursor.fetchone()[0]
+            
+            if admin_exists == 0:
+                print("👤 admin 계정 생성 중...")
+                create_admin_user(cursor)
+                conn.commit()
+                print("✅ admin 계정 생성 완료")
+            else:
+                print("✅ admin 계정이 이미 존재합니다.")
+            
+            conn.commit()
+            return True
+        
+        print(f"🔍 누락된 테이블 확인 및 생성 중... ({existing_tables}/4개 존재)")
+        
+        # 1. support_details 테이블
+        print("📋 1. support_details 테이블 확인...")
+        cursor.execute("""
+            SELECT EXISTS (
+                SELECT FROM information_schema.tables 
+                WHERE table_schema = 'public' 
+                AND table_name = 'support_details'
+            );
+        """)
+        
+        if not cursor.fetchone()[0]:
+            print("➕ support_details 테이블 생성 중...")
+            cursor.execute("""
+                CREATE TABLE support_details (
+                    id SERIAL PRIMARY KEY,
+                    material_id INTEGER REFERENCES materials(id) ON DELETE CASCADE,
+                    file_id INTEGER REFERENCES files(id) ON DELETE CASCADE,
+                    support_type VARCHAR(50),
+                    support_subtype VARCHAR(100),
+                    load_rating VARCHAR(50),
+                    load_capacity VARCHAR(50),
+                    material_standard VARCHAR(100),
+                    material_grade VARCHAR(50),
+                    pipe_size VARCHAR(20),
+                    length_mm NUMERIC(10,2),
+                    width_mm NUMERIC(10,2),
+                    height_mm NUMERIC(10,2),
+                    classification_confidence NUMERIC(3,2),
+                    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+                );
+                
+                CREATE INDEX idx_support_details_material_id ON support_details(material_id);
+                CREATE INDEX idx_support_details_file_id ON support_details(file_id);
+            """)
+            print("✅ support_details 테이블 생성 완료")
+        else:
+            print("✅ support_details 테이블 이미 존재")
+        
+        # 2. special_material_details 테이블
+        print("📋 2. special_material_details 테이블 확인...")
+        cursor.execute("""
+            SELECT EXISTS (
+                SELECT FROM information_schema.tables 
+                WHERE table_schema = 'public' 
+                AND table_name = 'special_material_details'
+            );
+        """)
+        
+        if not cursor.fetchone()[0]:
+            print("➕ special_material_details 테이블 생성 중...")
+            cursor.execute("""
+                CREATE TABLE special_material_details (
+                    id SERIAL PRIMARY KEY,
+                    material_id INTEGER REFERENCES materials(id) ON DELETE CASCADE,
+                    file_id INTEGER REFERENCES files(id) ON DELETE CASCADE,
+                    special_type VARCHAR(50),
+                    special_subtype VARCHAR(100),
+                    material_standard VARCHAR(100),
+                    material_grade VARCHAR(50),
+                    specifications TEXT,
+                    dimensions VARCHAR(100),
+                    weight_kg NUMERIC(10,3),
+                    classification_confidence NUMERIC(3,2),
+                    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+                );
+                
+                CREATE INDEX idx_special_material_details_material_id ON special_material_details(material_id);
+                CREATE INDEX idx_special_material_details_file_id ON special_material_details(file_id);
+            """)
+            print("✅ special_material_details 테이블 생성 완료")
+        else:
+            print("✅ special_material_details 테이블 이미 존재")
+        
+        # 3. purchase_requests 테이블
+        print("📋 3. purchase_requests 테이블 확인...")
+        cursor.execute("""
+            SELECT EXISTS (
+                SELECT FROM information_schema.tables 
+                WHERE table_schema = 'public' 
+                AND table_name = 'purchase_requests'
+            );
+        """)
+        
+        if not cursor.fetchone()[0]:
+            print("➕ purchase_requests 테이블 생성 중...")
+            cursor.execute("""
+                CREATE TABLE purchase_requests (
+                    request_id SERIAL PRIMARY KEY,
+                    request_no VARCHAR(50) UNIQUE NOT NULL,
+                    file_id INTEGER REFERENCES files(id),
+                    job_no VARCHAR(50) NOT NULL,
+                    category VARCHAR(50),
+                    material_count INTEGER DEFAULT 0,
+                    excel_file_path VARCHAR(500),
+                    project_name VARCHAR(200),
+                    requested_by INTEGER REFERENCES users(user_id),
+                    requested_by_username VARCHAR(100),
+                    request_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                    status VARCHAR(20) DEFAULT 'pending',
+                    total_items INTEGER DEFAULT 0,
+                    notes TEXT,
+                    approved_by INTEGER REFERENCES users(user_id),
+                    approved_by_username VARCHAR(100),
+                    approved_at TIMESTAMP,
+                    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+                );
+                
+                CREATE INDEX idx_purchase_requests_job_no ON purchase_requests(job_no);
+                CREATE INDEX idx_purchase_requests_status ON purchase_requests(status);
+                CREATE INDEX idx_purchase_requests_requested_by ON purchase_requests(requested_by);
+            """)
+            print("✅ purchase_requests 테이블 생성 완료")
+        else:
+            print("✅ purchase_requests 테이블 이미 존재")
+        
+        # 4. purchase_request_items 테이블
+        print("📋 4. purchase_request_items 테이블 확인...")
+        cursor.execute("""
+            SELECT EXISTS (
+                SELECT FROM information_schema.tables 
+                WHERE table_schema = 'public' 
+                AND table_name = 'purchase_request_items'
+            );
+        """)
+        
+        if not cursor.fetchone()[0]:
+            print("➕ purchase_request_items 테이블 생성 중...")
+            cursor.execute("""
+                CREATE TABLE purchase_request_items (
+                    item_id SERIAL PRIMARY KEY,
+                    request_id INTEGER REFERENCES purchase_requests(request_id) ON DELETE CASCADE,
+                    material_id INTEGER REFERENCES materials(id) ON DELETE CASCADE,
+                    description TEXT NOT NULL,
+                    category VARCHAR(50),
+                    subcategory VARCHAR(100),
+                    material_grade VARCHAR(50),
+                    size_spec VARCHAR(50),
+                    quantity NUMERIC(10,3) NOT NULL,
+                    unit VARCHAR(10) NOT NULL,
+                    drawing_name VARCHAR(100),
+                    notes TEXT,
+                    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+                );
+                
+                CREATE INDEX idx_purchase_request_items_request_id ON purchase_request_items(request_id);
+                CREATE INDEX idx_purchase_request_items_material_id ON purchase_request_items(material_id);
+                CREATE INDEX idx_purchase_request_items_category ON purchase_request_items(category);
+            """)
+            print("✅ purchase_request_items 테이블 생성 완료")
+        else:
+            print("✅ purchase_request_items 테이블 이미 존재")
+
+        # 5. revision_sessions 테이블
+        print("📋 5. revision_sessions 테이블 확인...")
+        cursor.execute("""
+            SELECT EXISTS (
+                SELECT FROM information_schema.tables 
+                WHERE table_schema = 'public' AND table_name = 'revision_sessions'
+            );
+        """)
+        if not cursor.fetchone()[0]:
+            print("➕ revision_sessions 테이블 생성 중...")
+            cursor.execute("""
+                CREATE TABLE revision_sessions (
+                    id SERIAL PRIMARY KEY,
+                    job_no VARCHAR(50) NOT NULL,
+                    current_file_id INTEGER REFERENCES files(id),
+                    previous_file_id INTEGER REFERENCES files(id),
+                    current_revision VARCHAR(20) NOT NULL,
+                    previous_revision VARCHAR(20) NOT NULL,
+                    
+                    status VARCHAR(20) DEFAULT 'processing',
+                    total_materials INTEGER DEFAULT 0,
+                    processed_materials INTEGER DEFAULT 0,
+                    
+                    added_count INTEGER DEFAULT 0,
+                    removed_count INTEGER DEFAULT 0,
+                    changed_count INTEGER DEFAULT 0,
+                    unchanged_count INTEGER DEFAULT 0,
+                    
+                    purchase_cancel_count INTEGER DEFAULT 0,
+                    inventory_transfer_count INTEGER DEFAULT 0,
+                    additional_purchase_count INTEGER DEFAULT 0,
+                    
+                    created_by VARCHAR(100),
+                    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                    completed_at TIMESTAMP
+                );
+                CREATE INDEX idx_revision_sessions_job_no ON revision_sessions(job_no);
+                CREATE INDEX idx_revision_sessions_status ON revision_sessions(status);
+            """)
+            print("✅ revision_sessions 테이블 생성 완료")
+        else:
+            print("✅ revision_sessions 테이블 이미 존재")
+
+        # 6. revision_material_changes 테이블
+        print("📋 6. revision_material_changes 테이블 확인...")
+        cursor.execute("""
+            SELECT EXISTS (
+                SELECT FROM information_schema.tables 
+                WHERE table_schema = 'public' AND table_name = 'revision_material_changes'
+            );
+        """)
+        if not cursor.fetchone()[0]:
+            print("➕ revision_material_changes 테이블 생성 중...")
+            cursor.execute("""
+                CREATE TABLE revision_material_changes (
+                    id SERIAL PRIMARY KEY,
+                    session_id INTEGER REFERENCES revision_sessions(id) ON DELETE CASCADE,
+                    
+                    material_id INTEGER REFERENCES materials(id),
+                    previous_material_id INTEGER,
+                    material_description TEXT NOT NULL,
+                    category VARCHAR(50) NOT NULL,
+                    
+                    change_type VARCHAR(20) NOT NULL,
+                    previous_quantity NUMERIC(10,3),
+                    current_quantity NUMERIC(10,3),
+                    quantity_difference NUMERIC(10,3),
+                    
+                    purchase_status VARCHAR(20) NOT NULL,
+                    purchase_confirmed_at TIMESTAMP,
+                    
+                    revision_action VARCHAR(30),
+                    action_status VARCHAR(20) DEFAULT 'pending',
+                    
+                    processed_by VARCHAR(100),
+                    processed_at TIMESTAMP,
+                    processing_notes TEXT,
+                    
+                    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+                );
+                CREATE INDEX idx_revision_changes_session ON revision_material_changes(session_id);
+                CREATE INDEX idx_revision_changes_action ON revision_material_changes(revision_action);
+                CREATE INDEX idx_revision_changes_status ON revision_material_changes(action_status);
+            """)
+            print("✅ revision_material_changes 테이블 생성 완료")
+        else:
+            print("✅ revision_material_changes 테이블 이미 존재")
+
+        # 7. inventory_transfers 테이블
+        print("📋 7. inventory_transfers 테이블 확인...")
+        cursor.execute("""
+            SELECT EXISTS (
+                SELECT FROM information_schema.tables 
+                WHERE table_schema = 'public' AND table_name = 'inventory_transfers'
+            );
+        """)
+        if not cursor.fetchone()[0]:
+            print("➕ inventory_transfers 테이블 생성 중...")
+            cursor.execute("""
+                CREATE TABLE inventory_transfers (
+                    id SERIAL PRIMARY KEY,
+                    revision_change_id INTEGER REFERENCES revision_material_changes(id),
+                    
+                    material_description TEXT NOT NULL,
+                    category VARCHAR(50) NOT NULL,
+                    quantity NUMERIC(10,3) NOT NULL,
+                    unit VARCHAR(10) NOT NULL,
+                    
+                    inventory_location VARCHAR(100),
+                    storage_notes TEXT,
+                    
+                    transferred_by VARCHAR(100) NOT NULL,
+                    transferred_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                    
+                    status VARCHAR(20) DEFAULT 'transferred'
+                );
+                CREATE INDEX idx_inventory_transfers_material ON inventory_transfers(material_description);
+                CREATE INDEX idx_inventory_transfers_date ON inventory_transfers(transferred_at);
+            """)
+            print("✅ inventory_transfers 테이블 생성 완료")
+        else:
+            print("✅ inventory_transfers 테이블 이미 존재")
+
+        # 8. revision_action_logs 테이블
+        print("📋 8. revision_action_logs 테이블 확인...")
+        cursor.execute("""
+            SELECT EXISTS (
+                SELECT FROM information_schema.tables 
+                WHERE table_schema = 'public' AND table_name = 'revision_action_logs'
+            );
+        """)
+        if not cursor.fetchone()[0]:
+            print("➕ revision_action_logs 테이블 생성 중...")
+            cursor.execute("""
+                CREATE TABLE revision_action_logs (
+                    id SERIAL PRIMARY KEY,
+                    session_id INTEGER REFERENCES revision_sessions(id),
+                    revision_change_id INTEGER REFERENCES revision_material_changes(id),
+                    
+                    action_type VARCHAR(30) NOT NULL,
+                    action_description TEXT,
+                    
+                    executed_by VARCHAR(100) NOT NULL,
+                    executed_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                    
+                    result VARCHAR(20) NOT NULL,
+                    result_message TEXT,
+                    result_data JSONB
+                );
+                CREATE INDEX idx_revision_logs_session ON revision_action_logs(session_id);
+                CREATE INDEX idx_revision_logs_type ON revision_action_logs(action_type);
+                CREATE INDEX idx_revision_logs_date ON revision_action_logs(executed_at);
+            """)
+            print("✅ revision_action_logs 테이블 생성 완료")
+        else:
+            print("✅ revision_action_logs 테이블 이미 존재")
+        
+        # 변경사항 커밋
+        conn.commit()
+        print("\n🎉 누락된 테이블 생성 완료!")
+        
+        # 최종 테이블 목록 확인
+        print("\n📋 현재 테이블 목록:")
+        cursor.execute("""
+            SELECT table_name 
+            FROM information_schema.tables 
+            WHERE table_schema = 'public' 
+            ORDER BY table_name;
+        """)
+        
+        tables = cursor.fetchall()
+        for table in tables:
+            print(f"  - {table[0]}")
+        
+        print(f"\n총 {len(tables)}개 테이블 존재")
+        
+        # users 테이블에 status 컬럼 추가 (필요한 경우)
+        add_missing_columns(cursor)
+        
+        # admin 계정 생성
+        create_admin_user(cursor)
+        conn.commit()
+        
+        return True
+        
+    except Exception as e:
+        print(f"❌ 테이블 생성 실패: {e}")
+        conn.rollback()
+        return False
+    
+    finally:
+        if conn:
+            conn.close()
+
+if __name__ == "__main__":
+    print("🚀 누락된 테이블 생성 시작...")
+    success = create_missing_tables()
+    
+    if success:
+        print("✅ 모든 작업 완료!")
+        sys.exit(0)
+    else:
+        print("❌ 작업 실패!")
+        sys.exit(1)

backend/start.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+echo "🚀 TK-MP Backend 시작 중..."
+
+# 데이터베이스 연결 대기
+echo "⏳ 데이터베이스 연결 대기 중..."
+while ! nc -z tk-mp-postgres 5432; do
+  sleep 1
+done
+echo "✅ 데이터베이스 연결 확인"
+
+# 자동 마이그레이션 실행 (처음 설치 시에만)
+echo "🔧 자동 마이그레이션 실행 중..."
+python scripts/create_missing_tables.py
+
+migration_result=$?
+if [ $migration_result -eq 0 ]; then
+    echo "✅ 마이그레이션 완료"
+else
+    echo "⚠️ 마이그레이션에 문제가 있었지만 서버를 시작합니다..."
+fi
+
+# FastAPI 서버 시작
+echo "🌟 FastAPI 서버 시작..."
+exec uvicorn app.main:app --host 0.0.0.0 --port 8000

backend/tests/test_classifier_refactor.py

@@ -0,0 +1,53 @@
+
+import pytest
+from app.services.integrated_classifier import classify_material_integrated
+from app.services.fitting_classifier import classify_fitting
+from app.services.classifier_constants import LEVEL1_TYPE_KEYWORDS
+
+def test_classify_simple_pipe():
+    result = classify_material_integrated("PIPE, A106 Gr.B, 2 INCH")
+    # LEVEL1_TYPE_KEYWORDS["PIPE"] contains "PIPE"
+    assert result["category"] == "PIPE"
+
+def test_classify_fitting_elbow():
+    result = classify_material_integrated("ELBOW 90DEG, BW")
+    # Should route to FITTING and then call fitting_classifier
+    assert result["category"] == "FITTING"
+    # detail check
+    if "fitting_type" in result:
+        assert result["fitting_type"]["type"] == "ELBOW"
+
+def test_classify_swagelok_partno():
+    # Regex check in integrated_classifier
+    result = classify_material_integrated("SS-400-1-4 CONNECTOR")
+    # Should be detected by swagelok_pattern as TUBE_FITTING (Level 0)
+    assert result["category"] == "TUBE_FITTING"
+
+def test_classify_swagelok_keyword():
+    # Keyword check
+    result = classify_material_integrated("SWAGELOK UNION 1/4 INCH")
+    # 'SWAGELOK' is in FITTING list in constants.
+    # So it should be FITTING?
+    # BUT integrated_classifier has logic: if detected_type == FITTING -> call classify_fitting
+    # classify_fitting checks 'SWAGELOK' -> sets category 'INSTRUMENT_FITTING'
+    
+    # Let's see what meaningful category it returns.
+    # The return from classify_fitting overrides integrated result if present.
+    assert result["category"] in ["FITTING", "INSTRUMENT_FITTING"]
+
+def test_classify_u_bolt():
+    # Priority check: U-BOLT is in BOLT keywords but integrated_classifier has early check for SUPPORT
+    result = classify_material_integrated("U-BOLT, 2 INCH")
+    assert result["category"] == "SUPPORT"
+
+def test_classify_pressure_constants_usage():
+    # fitting_classifier uses imported constants
+    # Test if it recognizes 3000LB (from constants)
+    result = classify_fitting("P_DAT", "COUPLING, 3000LB, SW", "2")
+    assert result["pressure_rating"]["rating"] == "3000LB"
+    assert result["pressure_rating"]["confidence"] > 0.9
+
+def test_classify_olet_constants_usage():
+    # Detect OLET
+    result = classify_fitting("P_DAT", "WELDOLET, 3000LB", "2", "1")
+    assert result["fitting_type"]["type"] == "OLET"

backend/tests/test_revision_comparison.py

@@ -0,0 +1,199 @@
+import pytest
+from unittest.mock import MagicMock
+from app.services.revision_comparator import RevisionComparator
+
+@pytest.fixture
+def mock_db():
+    return MagicMock()
+
+@pytest.fixture
+def comparator(mock_db):
+    return RevisionComparator(mock_db)
+
+def test_generate_material_hash(comparator):
+    """해시 생성 로직 테스트"""
+    # 1. 기본 케이스
+    desc = "PIPE 100A SCH40"
+    size = "100A"
+    mat = "A105"
+    hash1 = comparator._generate_material_hash(desc, size, mat)
+    
+    # 2. 공백/대소문자 차이 (정규화 확인)
+    hash2 = comparator._generate_material_hash("  pipe 100a sch40  ", "100A", "a105")
+    assert hash1 == hash2, "공백과 대소문자는 무시되어야 합니다."
+    
+    # 3. None 값 처리 (Robustness)
+    hash3 = comparator._generate_material_hash(None, None, None)
+    assert isinstance(hash3, str)
+    assert len(hash3) == 32 # MD5 checking
+    
+    # 4. 빈 문자열 처리
+    hash4 = comparator._generate_material_hash("", "", "")
+    assert hash3 == hash4, "None과 빈 문자열은 동일하게 처리되어야 합니다."
+
+def test_extract_size_from_description(comparator):
+    """사이즈 추출 로직 테스트"""
+    # 1. inch patterns
+    assert comparator._extract_size_from_description('PIPE 1/2" SCH40') == '1/2"'
+    assert comparator._extract_size_from_description('ELBOW 1.5inch 90D') == '1.5inch'
+    
+    # 2. mm patterns
+    assert comparator._extract_size_from_description('Plate 100mm') == '100mm'
+    assert comparator._extract_size_from_description('Bar 50.5 MM') == '50.5 MM'
+    
+    # 3. A patterns
+    assert comparator._extract_size_from_description('PIPE 100A') == '100A'
+    assert comparator._extract_size_from_description('FLANGE 50 A') == '50 A'
+    
+    # 4. DN patterns
+    assert comparator._extract_size_from_description('VALVE DN100') == 'DN100'
+    
+    # 5. Dimensions
+    assert comparator._extract_size_from_description('GASKET 10x20') == '10x20'
+    assert comparator._extract_size_from_description('SHEET 10*20') == '10*20'
+    
+    # 6. No match
+    assert comparator._extract_size_from_description('Just Text') == ""
+    assert comparator._extract_size_from_description(None) == ""
+
+def test_extract_material_from_description(comparator):
+    """재질 추출 로직 테스트"""
+    # 1. Standard materials
+    assert comparator._extract_material_from_description('PIPE A106 Gr.B') == 'A106 Gr.B' # Should match longer first if implemented correctly
+    assert comparator._extract_material_from_description('FLANGE A105') == 'A105'
+    
+    # 2. Stainless Steel
+    assert comparator._extract_material_from_description('PIPE SUS304L') == 'SUS304L'
+    assert comparator._extract_material_from_description('PIPE SS316') == 'SS316'
+    
+    # 3. Case Insensitivity
+    assert comparator._extract_material_from_description('pipe sus316l') == 'SUS316L'
+    
+    # 4. Partial matches (should prioritize specific)
+    # If "A106" is checked before "A106 Gr.B", it might return "A106". 
+    # The implementation list order matters.
+    # In our impl: "A106 Gr.B" is before "A106", so it should work.
+    assert comparator._extract_material_from_description('Material A106 Gr.B Spec') == 'A106 Gr.B'
+
+def test_compare_materials_logic_flow(comparator):
+    """비교 로직 통합 테스트"""
+    previous_confirmed = {
+        "revision": "Rev.0",
+        "confirmed_at": "2024-01-01",
+        "items": [
+            {
+                "specification": "PIPE 100A A106",
+                "size": "100A",
+                "material": "A106",  # Extraction will find 'A106' from 'PIPE 100A A106'
+                "bom_quantity": 10.0
+            }
+        ]
+    }
+    
+    # Case 1: Identical (Normalized)
+    new_materials_same = [{"description": "pipe 100a", "quantity": 10.0}] 
+    # Note: extraction logic needs to find size/mat from description to match hash.
+    # "pipe 100a" -> size="100A", mat="" (A106 not in desc)
+    # The hash will be MD5("pipe 100a|100a|")
+    # Previous hash was MD5("pipe 100a|100a|a106")
+    # They WON'T match if extraction fails to find "A106".
+    
+    # Let's provide description that allows extraction to work fully
+    new_materials_full = [{"description": "PIPE 100A A106", "quantity": 10.0}]
+    
+    result = comparator.compare_materials(previous_confirmed, new_materials_full)
+    assert result["unchanged_count"] == 1
+    
+    # Case 2: Quantity Changed
+    new_materials_qty = [{"description": "PIPE 100A A106", "quantity": 20.0}]
+    result = comparator.compare_materials(previous_confirmed, new_materials_qty)
+    assert result["changed_count"] == 1
+    assert result["changed_materials"][0]["change_type"] == "QUANTITY_CHANGED"
+    
+    # Case 3: New Item
+    new_materials_new = [{"description": "NEW ITEM SUS304", "quantity": 1.0}]
+    result = comparator.compare_materials(previous_confirmed, new_materials_new)
+    assert result["new_count"] == 1
+
+def test_compare_materials_fuzzy_match(comparator):
+    """Fuzzy Matching 테스트"""
+    previous_confirmed = {
+        "revision": "Rev.0",
+        "confirmed_at": "2024-01-01",
+        "items": [
+            {
+                "specification": "PIPE 100A SCH40 A106",
+                "size": "100A",
+                "material": "A106",
+                "bom_quantity": 10.0
+            }
+        ]
+    }
+    
+    # 오타가 포함된 유사 자재 (PIPEE -> PIPE, A106 -> A106)
+    # 정규화/해시는 다르지만 텍스트 유사도는 높음
+    new_materials_typo = [{
+        "description": "PIPEE 100A SCH40 A106", 
+        "quantity": 10.0
+    }]
+    
+    # RapidFuzz가 설치되어 있어야 동작
+    try:
+        import rapidfuzz
+        result = comparator.compare_materials(previous_confirmed, new_materials_typo)
+        
+        # 해시는 다르므로 new_count에 포함되거나 유사 자재로 분류됨
+        # 구현에 따라 "new_materials" 리스트에 "change_type": "NEW_BUT_SIMILAR" 로 들어감
+        assert result["new_count"] == 1
+        new_item = result["new_materials"][0]
+        assert new_item["change_type"] == "NEW_BUT_SIMILAR"
+        assert new_item["similarity_score"] > 85
+        
+    except ImportError:
+        pytest.skip("rapidfuzz not installed")
+
+def test_extract_size_word_boundary(comparator):
+    """Regex Word Boundary 테스트"""
+    # 1. mm boundary check
+    # "100mm" -> ok, "100mm2" -> fail if boundary used
+    assert comparator._extract_size_from_description("100mm") == "100mm"
+    # assert comparator._extract_size_from_description("100mmm") == "" # This depends on implementation strictness
+    
+    # 2. inch boundary
+    assert comparator._extract_size_from_description("1/2 inch") == "1/2 inch"
+    
+    # 3. DN boundary
+    assert comparator._extract_size_from_description("DN100") == "DN100"
+    # "DN100A" should ideally not match DN100 if we want strictness, or it might match 100A.
+
+
+def test_dynamic_material_loading(comparator, mock_db):
+    """DB 기반 동적 자재 로딩 테스트"""
+    # Mocking DB result
+    # fetchall returns list of rows (tuples)
+    mock_db.execute.return_value.fetchall.return_value = [
+        ("TITANIUM_GR2",),
+        ("INCONEL625",),
+    ]
+    
+    # 1. Check if DB loaded materials are correctly extracted
+    # Test with a material that is ONLY in the mocked DB response, not in default list
+    description = "PIPE 100A TITANIUM_GR2"
+    material = comparator._extract_material_from_description(description)
+    assert material == "TITANIUM_GR2"
+    
+    # Verify DB execute was called
+    assert mock_db.execute.called
+
+    # 2. Test fallback mechanism (simulate DB connection failure)
+    # mock_db.execute.side_effect = Exception("DB Connection Error")
+    # Reset mock to raise exception on next call
+    mock_db.execute.side_effect = Exception("DB Fail")
+    
+    # SUS316L is in the default fallback list
+    description_fallback = "PIPE 100A SUS316L"
+    material_fallback = comparator._extract_material_from_description(description_fallback)
+    
+    # Should still work using default list
+    assert material_fallback == "SUS316L"
+

current_schema.txt

@@ -0,0 +1,620 @@
+          table_name           |        column_name         |          data_type          | is_nullable |                        column_default                        
+-------------------------------+----------------------------+-----------------------------+-------------+--------------------------------------------------------------
+ bolt_details                  | id                         | integer                     | NO          | nextval('bolt_details_id_seq'::regclass)
+ bolt_details                  | material_id                | integer                     | YES         | 
+ bolt_details                  | file_id                    | integer                     | YES         | 
+ bolt_details                  | bolt_type                  | character varying           | YES         | 
+ bolt_details                  | thread_type                | character varying           | YES         | 
+ bolt_details                  | diameter                   | character varying           | YES         | 
+ bolt_details                  | length                     | character varying           | YES         | 
+ bolt_details                  | material_standard          | character varying           | YES         | 
+ bolt_details                  | material_grade             | character varying           | YES         | 
+ bolt_details                  | coating_type               | character varying           | YES         | 
+ bolt_details                  | pressure_rating            | character varying           | YES         | 
+ bolt_details                  | includes_nut               | boolean                     | YES         | 
+ bolt_details                  | includes_washer            | boolean                     | YES         | 
+ bolt_details                  | nut_type                   | character varying           | YES         | 
+ bolt_details                  | washer_type                | character varying           | YES         | 
+ bolt_details                  | classification_confidence  | double precision            | YES         | 
+ bolt_details                  | additional_info            | jsonb                       | YES         | 
+ bolt_details                  | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ bolt_details                  | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ confirmed_purchase_items      | id                         | integer                     | NO          | nextval('confirmed_purchase_items_id_seq'::regclass)
+ confirmed_purchase_items      | confirmation_id            | integer                     | YES         | 
+ confirmed_purchase_items      | item_code                  | character varying           | NO          | 
+ confirmed_purchase_items      | category                   | character varying           | NO          | 
+ confirmed_purchase_items      | specification              | text                        | YES         | 
+ confirmed_purchase_items      | size                       | character varying           | YES         | 
+ confirmed_purchase_items      | material                   | character varying           | YES         | 
+ confirmed_purchase_items      | bom_quantity               | numeric                     | NO          | 0
+ confirmed_purchase_items      | calculated_qty             | numeric                     | NO          | 0
+ confirmed_purchase_items      | unit                       | character varying           | NO          | 'EA'::character varying
+ confirmed_purchase_items      | safety_factor              | numeric                     | NO          | 1.0
+ confirmed_purchase_items      | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ files                         | id                         | integer                     | NO          | nextval('files_id_seq'::regclass)
+ files                         | project_id                 | integer                     | YES         | 
+ files                         | filename                   | character varying           | NO          | 
+ files                         | original_filename          | character varying           | NO          | 
+ files                         | file_path                  | character varying           | NO          | 
+ files                         | revision                   | character varying           | YES         | 'Rev.0'::character varying
+ files                         | upload_date                | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ files                         | uploaded_by                | character varying           | YES         | 
+ files                         | file_type                  | character varying           | YES         | 
+ files                         | file_size                  | integer                     | YES         | 
+ files                         | is_active                  | boolean                     | YES         | true
+ files                         | purchase_confirmed         | boolean                     | YES         | false
+ files                         | confirmed_at               | timestamp without time zone | YES         | 
+ files                         | confirmed_by               | character varying           | YES         | 
+ files                         | job_no                     | character varying           | YES         | 
+ files                         | bom_name                   | character varying           | YES         | 
+ files                         | description                | text                        | YES         | 
+ files                         | parsed_count               | integer                     | YES         | 0
+ fitting_details               | id                         | integer                     | NO          | nextval('fitting_details_id_seq'::regclass)
+ fitting_details               | material_id                | integer                     | YES         | 
+ fitting_details               | file_id                    | integer                     | YES         | 
+ fitting_details               | fitting_type               | character varying           | YES         | 
+ fitting_details               | fitting_subtype            | character varying           | YES         | 
+ fitting_details               | connection_method          | character varying           | YES         | 
+ fitting_details               | connection_code            | character varying           | YES         | 
+ fitting_details               | pressure_rating            | character varying           | YES         | 
+ fitting_details               | max_pressure               | character varying           | YES         | 
+ fitting_details               | manufacturing_method       | character varying           | YES         | 
+ fitting_details               | material_standard          | character varying           | YES         | 
+ fitting_details               | material_grade             | character varying           | YES         | 
+ fitting_details               | material_type              | character varying           | YES         | 
+ fitting_details               | main_size                  | character varying           | YES         | 
+ fitting_details               | reduced_size               | character varying           | YES         | 
+ fitting_details               | length_mm                  | numeric                     | YES         | 
+ fitting_details               | schedule                   | character varying           | YES         | 
+ fitting_details               | classification_confidence  | double precision            | YES         | 
+ fitting_details               | additional_info            | jsonb                       | YES         | 
+ fitting_details               | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ fitting_details               | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ flange_details                | id                         | integer                     | NO          | nextval('flange_details_id_seq'::regclass)
+ flange_details                | material_id                | integer                     | YES         | 
+ flange_details                | file_id                    | integer                     | YES         | 
+ flange_details                | flange_type                | character varying           | YES         | 
+ flange_details                | facing_type                | character varying           | YES         | 
+ flange_details                | pressure_rating            | character varying           | YES         | 
+ flange_details                | material_standard          | character varying           | YES         | 
+ flange_details                | material_grade             | character varying           | YES         | 
+ flange_details                | size_inches                | character varying           | YES         | 
+ flange_details                | bolt_hole_count            | integer                     | YES         | 
+ flange_details                | bolt_hole_size             | character varying           | YES         | 
+ flange_details                | classification_confidence  | double precision            | YES         | 
+ flange_details                | additional_info            | jsonb                       | YES         | 
+ flange_details                | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ flange_details                | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ gasket_details                | id                         | integer                     | NO          | nextval('gasket_details_id_seq'::regclass)
+ gasket_details                | material_id                | integer                     | YES         | 
+ gasket_details                | file_id                    | integer                     | YES         | 
+ gasket_details                | gasket_type                | character varying           | YES         | 
+ gasket_details                | gasket_subtype             | character varying           | YES         | 
+ gasket_details                | material_type              | character varying           | YES         | 
+ gasket_details                | filler_material            | character varying           | YES         | 
+ gasket_details                | size_inches                | character varying           | YES         | 
+ gasket_details                | pressure_rating            | character varying           | YES         | 
+ gasket_details                | thickness                  | character varying           | YES         | 
+ gasket_details                | temperature_range          | character varying           | YES         | 
+ gasket_details                | fire_safe                  | boolean                     | YES         | 
+ gasket_details                | classification_confidence  | double precision            | YES         | 
+ gasket_details                | additional_info            | jsonb                       | YES         | 
+ gasket_details                | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ gasket_details                | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ instrument_details            | id                         | integer                     | NO          | nextval('instrument_details_id_seq'::regclass)
+ instrument_details            | material_id                | integer                     | YES         | 
+ instrument_details            | file_id                    | integer                     | YES         | 
+ instrument_details            | instrument_type            | character varying           | YES         | 
+ instrument_details            | instrument_subtype         | character varying           | YES         | 
+ instrument_details            | measurement_type           | character varying           | YES         | 
+ instrument_details            | measurement_range          | character varying           | YES         | 
+ instrument_details            | accuracy                   | character varying           | YES         | 
+ instrument_details            | connection_type            | character varying           | YES         | 
+ instrument_details            | connection_size            | character varying           | YES         | 
+ instrument_details            | body_material              | character varying           | YES         | 
+ instrument_details            | wetted_parts_material      | character varying           | YES         | 
+ instrument_details            | electrical_rating          | character varying           | YES         | 
+ instrument_details            | output_signal              | character varying           | YES         | 
+ instrument_details            | classification_confidence  | double precision            | YES         | 
+ instrument_details            | additional_info            | jsonb                       | YES         | 
+ instrument_details            | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ instrument_details            | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ jobs                          | job_no                     | character varying           | NO          | 
+ jobs                          | job_name                   | character varying           | NO          | 
+ jobs                          | client_name                | character varying           | NO          | 
+ jobs                          | end_user                   | character varying           | YES         | 
+ jobs                          | epc_company                | character varying           | YES         | 
+ jobs                          | project_site               | character varying           | YES         | 
+ jobs                          | contract_date              | date                        | YES         | 
+ jobs                          | delivery_date              | date                        | YES         | 
+ jobs                          | delivery_terms             | character varying           | YES         | 
+ jobs                          | status                     | character varying           | YES         | '진행중'::character varying
+ jobs                          | delivery_completed_date    | date                        | YES         | 
+ jobs                          | project_closed_date        | date                        | YES         | 
+ jobs                          | description                | text                        | YES         | 
+ jobs                          | created_by                 | character varying           | YES         | 
+ jobs                          | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ jobs                          | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ jobs                          | is_active                  | boolean                     | YES         | true
+ jobs                          | updated_by                 | character varying           | YES         | 
+ jobs                          | assigned_to                | character varying           | YES         | 
+ jobs                          | project_type               | character varying           | NO          | '냉동기'::character varying
+ login_logs                    | log_id                     | integer                     | NO          | nextval('login_logs_log_id_seq'::regclass)
+ login_logs                    | user_id                    | integer                     | YES         | 
+ login_logs                    | login_time                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ login_logs                    | ip_address                 | character varying           | YES         | 
+ login_logs                    | user_agent                 | text                        | YES         | 
+ login_logs                    | login_status               | character varying           | YES         | 
+ login_logs                    | failure_reason             | character varying           | YES         | 
+ login_logs                    | session_duration           | integer                     | YES         | 
+ login_logs                    | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ material_categories           | id                         | integer                     | NO          | nextval('material_categories_id_seq'::regclass)
+ material_categories           | standard_id                | integer                     | YES         | 
+ material_categories           | category_code              | character varying           | NO          | 
+ material_categories           | category_name              | character varying           | NO          | 
+ material_categories           | description                | text                        | YES         | 
+ material_categories           | is_active                  | boolean                     | YES         | true
+ material_categories           | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ material_categories           | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ material_comparison_details   | id                         | integer                     | NO          | nextval('material_comparison_details_id_seq'::regclass)
+ material_comparison_details   | comparison_id              | integer                     | NO          | 
+ material_comparison_details   | material_hash              | character varying           | NO          | 
+ material_comparison_details   | change_type                | character varying           | NO          | 
+ material_comparison_details   | description                | text                        | NO          | 
+ material_comparison_details   | size_spec                  | character varying           | YES         | 
+ material_comparison_details   | material_grade             | character varying           | YES         | 
+ material_comparison_details   | previous_quantity          | numeric                     | YES         | 0
+ material_comparison_details   | current_quantity           | numeric                     | YES         | 0
+ material_comparison_details   | quantity_diff              | numeric                     | YES         | 0
+ material_comparison_details   | additional_purchase_needed | numeric                     | YES         | 0
+ material_comparison_details   | classified_category        | character varying           | YES         | 
+ material_comparison_details   | classification_confidence  | numeric                     | YES         | 
+ material_comparison_details   | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ material_grades               | id                         | integer                     | NO          | nextval('material_grades_id_seq'::regclass)
+ material_grades               | specification_id           | integer                     | YES         | 
+ material_grades               | grade_code                 | character varying           | NO          | 
+ material_grades               | grade_name                 | character varying           | YES         | 
+ material_grades               | composition                | character varying           | YES         | 
+ material_grades               | applications               | character varying           | YES         | 
+ material_grades               | temp_max                   | character varying           | YES         | 
+ material_grades               | temp_range                 | character varying           | YES         | 
+ material_grades               | yield_strength             | character varying           | YES         | 
+ material_grades               | tensile_strength           | character varying           | YES         | 
+ material_grades               | corrosion_resistance       | character varying           | YES         | 
+ material_grades               | stabilizer                 | character varying           | YES         | 
+ material_grades               | base_grade                 | character varying           | YES         | 
+ material_grades               | is_active                  | boolean                     | YES         | true
+ material_grades               | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ material_grades               | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ material_patterns             | id                         | integer                     | NO          | nextval('material_patterns_id_seq'::regclass)
+ material_patterns             | specification_id           | integer                     | YES         | 
+ material_patterns             | pattern                    | text                        | NO          | 
+ material_patterns             | description                | character varying           | YES         | 
+ material_patterns             | priority                   | integer                     | YES         | 1
+ material_patterns             | is_active                  | boolean                     | YES         | true
+ material_patterns             | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ material_patterns             | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ material_purchase_mapping     | id                         | integer                     | NO          | nextval('material_purchase_mapping_id_seq'::regclass)
+ material_purchase_mapping     | material_id                | integer                     | NO          | 
+ material_purchase_mapping     | purchase_item_id           | integer                     | NO          | 
+ material_purchase_mapping     | quantity_ratio             | numeric                     | YES         | 1.0
+ material_purchase_mapping     | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ material_purchase_tracking    | id                         | integer                     | NO          | nextval('material_purchase_tracking_id_seq'::regclass)
+ material_purchase_tracking    | material_hash              | character varying           | NO          | 
+ material_purchase_tracking    | original_description       | text                        | NO          | 
+ material_purchase_tracking    | size_spec                  | character varying           | YES         | 
+ material_purchase_tracking    | material_grade             | character varying           | YES         | 
+ material_purchase_tracking    | bom_quantity               | numeric                     | NO          | 
+ material_purchase_tracking    | confirmed_quantity         | numeric                     | YES         | 
+ material_purchase_tracking    | purchase_quantity          | numeric                     | YES         | 
+ material_purchase_tracking    | status                     | character varying           | YES         | 'pending'::character varying
+ material_purchase_tracking    | confirmed_by               | character varying           | YES         | 
+ material_purchase_tracking    | confirmed_at               | timestamp without time zone | YES         | 
+ material_purchase_tracking    | ordered_by                 | character varying           | YES         | 
+ material_purchase_tracking    | ordered_at                 | timestamp without time zone | YES         | 
+ material_purchase_tracking    | approved_by                | character varying           | YES         | 
+ material_purchase_tracking    | approved_at                | timestamp without time zone | YES         | 
+ material_purchase_tracking    | job_no                     | character varying           | YES         | 
+ material_purchase_tracking    | revision                   | character varying           | YES         | 
+ material_purchase_tracking    | file_id                    | integer                     | YES         | 
+ material_purchase_tracking    | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ material_purchase_tracking    | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ material_revisions_comparison | id                         | integer                     | NO          | nextval('material_revisions_comparison_id_seq'::regclass)
+ material_revisions_comparison | job_no                     | character varying           | NO          | 
+ material_revisions_comparison | current_revision           | character varying           | NO          | 
+ material_revisions_comparison | previous_revision          | character varying           | NO          | 
+ material_revisions_comparison | current_file_id            | integer                     | NO          | 
+ material_revisions_comparison | previous_file_id           | integer                     | NO          | 
+ material_revisions_comparison | total_current_items        | integer                     | YES         | 0
+ material_revisions_comparison | total_previous_items       | integer                     | YES         | 0
+ material_revisions_comparison | new_items_count            | integer                     | YES         | 0
+ material_revisions_comparison | modified_items_count       | integer                     | YES         | 0
+ material_revisions_comparison | removed_items_count        | integer                     | YES         | 0
+ material_revisions_comparison | unchanged_items_count      | integer                     | YES         | 0
+ material_revisions_comparison | comparison_details         | jsonb                       | YES         | 
+ material_revisions_comparison | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ material_revisions_comparison | created_by                 | character varying           | YES         | 
+ material_specifications       | id                         | integer                     | NO          | nextval('material_specifications_id_seq'::regclass)
+ material_specifications       | category_id                | integer                     | YES         | 
+ material_specifications       | spec_code                  | character varying           | NO          | 
+ material_specifications       | spec_name                  | character varying           | NO          | 
+ material_specifications       | description                | text                        | YES         | 
+ material_specifications       | material_type              | character varying           | YES         | 
+ material_specifications       | manufacturing              | character varying           | YES         | 
+ material_specifications       | pressure_rating            | character varying           | YES         | 
+ material_specifications       | is_active                  | boolean                     | YES         | true
+ material_specifications       | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ material_specifications       | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ material_standards            | id                         | integer                     | NO          | nextval('material_standards_id_seq'::regclass)
+ material_standards            | standard_code              | character varying           | NO          | 
+ material_standards            | standard_name              | character varying           | NO          | 
+ material_standards            | description                | text                        | YES         | 
+ material_standards            | country                    | character varying           | YES         | 
+ material_standards            | is_active                  | boolean                     | YES         | true
+ material_standards            | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ material_standards            | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ material_tubing_mapping       | id                         | integer                     | NO          | nextval('material_tubing_mapping_id_seq'::regclass)
+ material_tubing_mapping       | material_id                | integer                     | YES         | 
+ material_tubing_mapping       | tubing_product_id          | integer                     | YES         | 
+ material_tubing_mapping       | confidence_score           | numeric                     | YES         | 
+ material_tubing_mapping       | mapping_method             | character varying           | YES         | 
+ material_tubing_mapping       | mapped_by                  | character varying           | YES         | 
+ material_tubing_mapping       | mapped_at                  | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ material_tubing_mapping       | required_length_m          | numeric                     | YES         | 
+ material_tubing_mapping       | calculated_quantity        | numeric                     | YES         | 
+ material_tubing_mapping       | is_verified                | boolean                     | YES         | false
+ material_tubing_mapping       | verified_by                | character varying           | YES         | 
+ material_tubing_mapping       | verified_at                | timestamp without time zone | YES         | 
+ material_tubing_mapping       | notes                      | text                        | YES         | 
+ material_tubing_mapping       | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ materials                     | id                         | integer                     | NO          | nextval('materials_id_seq'::regclass)
+ materials                     | file_id                    | integer                     | YES         | 
+ materials                     | line_number                | integer                     | YES         | 
+ materials                     | original_description       | text                        | NO          | 
+ materials                     | classified_category        | character varying           | YES         | 
+ materials                     | classified_subcategory     | character varying           | YES         | 
+ materials                     | material_grade             | character varying           | YES         | 
+ materials                     | schedule                   | character varying           | YES         | 
+ materials                     | size_spec                  | character varying           | YES         | 
+ materials                     | quantity                   | numeric                     | NO          | 
+ materials                     | unit                       | character varying           | NO          | 
+ materials                     | drawing_name               | character varying           | YES         | 
+ materials                     | area_code                  | character varying           | YES         | 
+ materials                     | line_no                    | character varying           | YES         | 
+ materials                     | classification_confidence  | numeric                     | YES         | 
+ materials                     | classification_details     | jsonb                       | YES         | 
+ materials                     | is_verified                | boolean                     | YES         | false
+ materials                     | verified_by                | character varying           | YES         | 
+ materials                     | verified_at                | timestamp without time zone | YES         | 
+ materials                     | drawing_reference          | character varying           | YES         | 
+ materials                     | notes                      | text                        | YES         | 
+ materials                     | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ materials                     | main_nom                   | character varying           | YES         | 
+ materials                     | red_nom                    | character varying           | YES         | 
+ materials                     | full_material_grade        | text                        | YES         | 
+ materials                     | row_number                 | integer                     | YES         | 
+ materials                     | length                     | numeric                     | YES         | 
+ materials                     | purchase_confirmed         | boolean                     | YES         | false
+ materials                     | confirmed_quantity         | numeric                     | YES         | 
+ materials                     | purchase_status            | character varying           | YES         | 
+ materials                     | purchase_confirmed_by      | character varying           | YES         | 
+ materials                     | purchase_confirmed_at      | timestamp without time zone | YES         | 
+ materials                     | revision_status            | character varying           | YES         | 
+ materials                     | material_hash              | character varying           | YES         | 
+ materials                     | normalized_description     | text                        | YES         | 
+ materials                     | brand                      | character varying           | YES         | 
+ materials                     | user_requirement           | text                        | YES         | 
+ materials                     | is_active                  | boolean                     | YES         | true
+ materials                     | total_length               | numeric                     | YES         | 
+ permissions                   | permission_id              | integer                     | NO          | nextval('permissions_permission_id_seq'::regclass)
+ permissions                   | permission_name            | character varying           | NO          | 
+ permissions                   | description                | text                        | YES         | 
+ permissions                   | module                     | character varying           | YES         | 
+ permissions                   | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ pipe_details                  | id                         | integer                     | NO          | nextval('pipe_details_id_seq'::regclass)
+ pipe_details                  | material_id                | integer                     | YES         | 
+ pipe_details                  | file_id                    | integer                     | YES         | 
+ pipe_details                  | outer_diameter             | character varying           | YES         | 
+ pipe_details                  | schedule                   | character varying           | YES         | 
+ pipe_details                  | material_spec              | character varying           | YES         | 
+ pipe_details                  | manufacturing_method       | character varying           | YES         | 
+ pipe_details                  | end_preparation            | character varying           | YES         | 
+ pipe_details                  | length_mm                  | numeric                     | YES         | 
+ pipe_details                  | classification_confidence  | double precision            | YES         | 
+ pipe_details                  | additional_info            | jsonb                       | YES         | 
+ pipe_details                  | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ pipe_details                  | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ pipe_end_preparations         | id                         | integer                     | NO          | nextval('pipe_end_preparations_id_seq'::regclass)
+ pipe_end_preparations         | material_id                | integer                     | NO          | 
+ pipe_end_preparations         | file_id                    | integer                     | NO          | 
+ pipe_end_preparations         | end_preparation_type       | character varying           | YES         | 'PBE'::character varying
+ pipe_end_preparations         | end_preparation_code       | character varying           | YES         | 
+ pipe_end_preparations         | machining_required         | boolean                     | YES         | false
+ pipe_end_preparations         | cutting_note               | text                        | YES         | 
+ pipe_end_preparations         | original_description       | text                        | NO          | 
+ pipe_end_preparations         | clean_description          | text                        | NO          | 
+ pipe_end_preparations         | confidence                 | double precision            | YES         | 0.0
+ pipe_end_preparations         | matched_pattern            | character varying           | YES         | 
+ pipe_end_preparations         | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ pipe_end_preparations         | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ projects                      | id                         | integer                     | NO          | nextval('projects_id_seq'::regclass)
+ projects                      | official_project_code      | character varying           | YES         | 
+ projects                      | project_name               | character varying           | NO          | 
+ projects                      | client_name                | character varying           | YES         | 
+ projects                      | design_project_code        | character varying           | YES         | 
+ projects                      | design_project_name        | character varying           | YES         | 
+ projects                      | is_code_matched            | boolean                     | YES         | false
+ projects                      | matched_by                 | character varying           | YES         | 
+ projects                      | matched_at                 | timestamp without time zone | YES         | 
+ projects                      | status                     | character varying           | YES         | 'active'::character varying
+ projects                      | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ projects                      | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ projects                      | description                | text                        | YES         | 
+ projects                      | notes                      | text                        | YES         | 
+ purchase_confirmations        | id                         | integer                     | NO          | nextval('purchase_confirmations_id_seq'::regclass)
+ purchase_confirmations        | job_no                     | character varying           | NO          | 
+ purchase_confirmations        | file_id                    | integer                     | YES         | 
+ purchase_confirmations        | bom_name                   | character varying           | NO          | 
+ purchase_confirmations        | revision                   | character varying           | NO          | 'Rev.0'::character varying
+ purchase_confirmations        | confirmed_at               | timestamp without time zone | NO          | 
+ purchase_confirmations        | confirmed_by               | character varying           | NO          | 
+ purchase_confirmations        | is_active                  | boolean                     | NO          | true
+ purchase_confirmations        | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ purchase_confirmations        | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ purchase_items                | id                         | integer                     | NO          | nextval('purchase_items_id_seq'::regclass)
+ purchase_items                | item_code                  | character varying           | NO          | 
+ purchase_items                | category                   | character varying           | NO          | 
+ purchase_items                | specification              | text                        | NO          | 
+ purchase_items                | material_spec              | character varying           | YES         | 
+ purchase_items                | size_spec                  | character varying           | YES         | 
+ purchase_items                | unit                       | character varying           | NO          | 
+ purchase_items                | bom_quantity               | numeric                     | NO          | 
+ purchase_items                | safety_factor              | numeric                     | YES         | 1.10
+ purchase_items                | minimum_order_qty          | numeric                     | YES         | 0
+ purchase_items                | order_unit_qty             | numeric                     | YES         | 1
+ purchase_items                | calculated_qty             | numeric                     | YES         | 
+ purchase_items                | cutting_loss               | numeric                     | YES         | 0
+ purchase_items                | standard_length            | numeric                     | YES         | 
+ purchase_items                | pipes_count                | integer                     | YES         | 
+ purchase_items                | waste_length               | numeric                     | YES         | 
+ purchase_items                | detailed_spec              | jsonb                       | YES         | 
+ purchase_items                | preferred_supplier         | character varying           | YES         | 
+ purchase_items                | last_unit_price            | numeric                     | YES         | 
+ purchase_items                | currency                   | character varying           | YES         | 'KRW'::character varying
+ purchase_items                | lead_time_days             | integer                     | YES         | 30
+ purchase_items                | job_no                     | character varying           | NO          | 
+ purchase_items                | revision                   | character varying           | YES         | 'Rev.0'::character varying
+ purchase_items                | file_id                    | integer                     | YES         | 
+ purchase_items                | is_active                  | boolean                     | YES         | true
+ purchase_items                | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ purchase_items                | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ purchase_items                | created_by                 | character varying           | YES         | 
+ purchase_items                | updated_by                 | character varying           | YES         | 
+ purchase_items                | approved_by                | character varying           | YES         | 
+ purchase_items                | approved_at                | timestamp without time zone | YES         | 
+ purchase_request_items        | item_id                    | integer                     | NO          | nextval('purchase_request_items_item_id_seq'::regclass)
+ purchase_request_items        | request_id                 | integer                     | YES         | 
+ purchase_request_items        | material_id                | integer                     | YES         | 
+ purchase_request_items        | description                | text                        | NO          | 
+ purchase_request_items        | category                   | character varying           | YES         | 
+ purchase_request_items        | subcategory                | character varying           | YES         | 
+ purchase_request_items        | material_grade             | character varying           | YES         | 
+ purchase_request_items        | size_spec                  | character varying           | YES         | 
+ purchase_request_items        | quantity                   | numeric                     | NO          | 
+ purchase_request_items        | unit                       | character varying           | NO          | 
+ purchase_request_items        | drawing_name               | character varying           | YES         | 
+ purchase_request_items        | notes                      | text                        | YES         | 
+ purchase_request_items        | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ purchase_requests             | request_id                 | integer                     | NO          | nextval('purchase_requests_request_id_seq'::regclass)
+ purchase_requests             | request_no                 | character varying           | NO          | 
+ purchase_requests             | job_no                     | character varying           | NO          | 
+ purchase_requests             | project_name               | character varying           | YES         | 
+ purchase_requests             | requested_by               | integer                     | YES         | 
+ purchase_requests             | requested_by_username      | character varying           | YES         | 
+ purchase_requests             | request_date               | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ purchase_requests             | status                     | character varying           | YES         | 'pending'::character varying
+ purchase_requests             | total_items                | integer                     | YES         | 0
+ purchase_requests             | notes                      | text                        | YES         | 
+ purchase_requests             | approved_by                | integer                     | YES         | 
+ purchase_requests             | approved_by_username       | character varying           | YES         | 
+ purchase_requests             | approved_at                | timestamp without time zone | YES         | 
+ purchase_requests             | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ purchase_requests             | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ purchase_requests             | file_id                    | integer                     | YES         | 
+ requirement_types             | id                         | integer                     | NO          | nextval('requirement_types_id_seq'::regclass)
+ requirement_types             | type_code                  | character varying           | NO          | 
+ requirement_types             | type_name                  | character varying           | NO          | 
+ requirement_types             | category                   | character varying           | NO          | 
+ requirement_types             | description                | text                        | YES         | 
+ requirement_types             | is_active                  | boolean                     | YES         | true
+ requirement_types             | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ role_permissions              | role_permission_id         | integer                     | NO          | nextval('role_permissions_role_permission_id_seq'::regclass)
+ role_permissions              | role                       | character varying           | NO          | 
+ role_permissions              | permission_id              | integer                     | YES         | 
+ role_permissions              | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ special_material_details      | id                         | integer                     | NO          | nextval('special_material_details_id_seq'::regclass)
+ special_material_details      | material_id                | integer                     | YES         | 
+ special_material_details      | file_id                    | integer                     | YES         | 
+ special_material_details      | special_type               | character varying           | YES         | 
+ special_material_details      | special_subtype            | character varying           | YES         | 
+ special_material_details      | material_standard          | character varying           | YES         | 
+ special_material_details      | material_grade             | character varying           | YES         | 
+ special_material_details      | specifications             | text                        | YES         | 
+ special_material_details      | dimensions                 | character varying           | YES         | 
+ special_material_details      | weight_kg                  | numeric                     | YES         | 
+ special_material_details      | classification_confidence  | numeric                     | YES         | 
+ special_material_details      | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ special_material_details      | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ special_material_grades       | id                         | integer                     | NO          | nextval('special_material_grades_id_seq'::regclass)
+ special_material_grades       | material_id                | integer                     | YES         | 
+ special_material_grades       | grade_code                 | character varying           | NO          | 
+ special_material_grades       | composition                | character varying           | YES         | 
+ special_material_grades       | applications               | character varying           | YES         | 
+ special_material_grades       | temp_max                   | character varying           | YES         | 
+ special_material_grades       | strength                   | character varying           | YES         | 
+ special_material_grades       | purity                     | character varying           | YES         | 
+ special_material_grades       | corrosion                  | character varying           | YES         | 
+ special_material_grades       | is_active                  | boolean                     | YES         | true
+ special_material_grades       | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ special_material_grades       | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ special_material_patterns     | id                         | integer                     | NO          | nextval('special_material_patterns_id_seq'::regclass)
+ special_material_patterns     | material_id                | integer                     | YES         | 
+ special_material_patterns     | pattern                    | text                        | NO          | 
+ special_material_patterns     | description                | character varying           | YES         | 
+ special_material_patterns     | priority                   | integer                     | YES         | 1
+ special_material_patterns     | is_active                  | boolean                     | YES         | true
+ special_material_patterns     | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ special_material_patterns     | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ special_materials             | id                         | integer                     | NO          | nextval('special_materials_id_seq'::regclass)
+ special_materials             | material_type              | character varying           | NO          | 
+ special_materials             | material_name              | character varying           | NO          | 
+ special_materials             | description                | text                        | YES         | 
+ special_materials             | composition                | character varying           | YES         | 
+ special_materials             | applications               | text                        | YES         | 
+ special_materials             | temp_max                   | character varying           | YES         | 
+ special_materials             | manufacturing              | character varying           | YES         | 
+ special_materials             | is_active                  | boolean                     | YES         | true
+ special_materials             | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ special_materials             | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ support_details               | id                         | integer                     | NO          | nextval('support_details_id_seq'::regclass)
+ support_details               | material_id                | integer                     | YES         | 
+ support_details               | file_id                    | integer                     | YES         | 
+ support_details               | support_type               | character varying           | YES         | 
+ support_details               | support_subtype            | character varying           | YES         | 
+ support_details               | load_rating                | character varying           | YES         | 
+ support_details               | load_capacity              | character varying           | YES         | 
+ support_details               | material_standard          | character varying           | YES         | 
+ support_details               | material_grade             | character varying           | YES         | 
+ support_details               | pipe_size                  | character varying           | YES         | 
+ support_details               | length_mm                  | numeric                     | YES         | 
+ support_details               | width_mm                   | numeric                     | YES         | 
+ support_details               | height_mm                  | numeric                     | YES         | 
+ support_details               | classification_confidence  | numeric                     | YES         | 
+ support_details               | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ support_details               | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ tubing_categories             | id                         | integer                     | NO          | nextval('tubing_categories_id_seq'::regclass)
+ tubing_categories             | category_code              | character varying           | NO          | 
+ tubing_categories             | category_name              | character varying           | NO          | 
+ tubing_categories             | description                | text                        | YES         | 
+ tubing_categories             | is_active                  | boolean                     | YES         | true
+ tubing_categories             | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ tubing_categories             | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ tubing_manufacturers          | id                         | integer                     | NO          | nextval('tubing_manufacturers_id_seq'::regclass)
+ tubing_manufacturers          | manufacturer_code          | character varying           | NO          | 
+ tubing_manufacturers          | manufacturer_name          | character varying           | NO          | 
+ tubing_manufacturers          | country                    | character varying           | YES         | 
+ tubing_manufacturers          | website                    | character varying           | YES         | 
+ tubing_manufacturers          | contact_info               | jsonb                       | YES         | 
+ tubing_manufacturers          | quality_certs              | jsonb                       | YES         | 
+ tubing_manufacturers          | is_active                  | boolean                     | YES         | true
+ tubing_manufacturers          | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ tubing_manufacturers          | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ tubing_products               | id                         | integer                     | NO          | nextval('tubing_products_id_seq'::regclass)
+ tubing_products               | specification_id           | integer                     | YES         | 
+ tubing_products               | manufacturer_id            | integer                     | YES         | 
+ tubing_products               | manufacturer_part_number   | character varying           | NO          | 
+ tubing_products               | manufacturer_product_name  | character varying           | YES         | 
+ tubing_products               | list_price                 | numeric                     | YES         | 
+ tubing_products               | currency                   | character varying           | YES         | 'KRW'::character varying
+ tubing_products               | lead_time_days             | integer                     | YES         | 
+ tubing_products               | minimum_order_qty          | numeric                     | YES         | 
+ tubing_products               | standard_packaging_qty     | numeric                     | YES         | 
+ tubing_products               | availability_status        | character varying           | YES         | 
+ tubing_products               | last_price_update          | date                        | YES         | 
+ tubing_products               | datasheet_url              | character varying           | YES         | 
+ tubing_products               | catalog_page               | character varying           | YES         | 
+ tubing_products               | notes                      | text                        | YES         | 
+ tubing_products               | is_active                  | boolean                     | YES         | true
+ tubing_products               | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ tubing_products               | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ tubing_specifications         | id                         | integer                     | NO          | nextval('tubing_specifications_id_seq'::regclass)
+ tubing_specifications         | category_id                | integer                     | YES         | 
+ tubing_specifications         | spec_code                  | character varying           | NO          | 
+ tubing_specifications         | spec_name                  | character varying           | NO          | 
+ tubing_specifications         | outer_diameter_mm          | numeric                     | YES         | 
+ tubing_specifications         | wall_thickness_mm          | numeric                     | YES         | 
+ tubing_specifications         | inner_diameter_mm          | numeric                     | YES         | 
+ tubing_specifications         | material_grade             | character varying           | YES         | 
+ tubing_specifications         | material_standard          | character varying           | YES         | 
+ tubing_specifications         | max_pressure_bar           | numeric                     | YES         | 
+ tubing_specifications         | max_temperature_c          | numeric                     | YES         | 
+ tubing_specifications         | min_temperature_c          | numeric                     | YES         | 
+ tubing_specifications         | standard_length_m          | numeric                     | YES         | 
+ tubing_specifications         | bend_radius_min_mm         | numeric                     | YES         | 
+ tubing_specifications         | surface_finish             | character varying           | YES         | 
+ tubing_specifications         | hardness                   | character varying           | YES         | 
+ tubing_specifications         | notes                      | text                        | YES         | 
+ tubing_specifications         | is_active                  | boolean                     | YES         | true
+ tubing_specifications         | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ tubing_specifications         | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ user_activity_logs            | id                         | integer                     | NO          | nextval('user_activity_logs_id_seq'::regclass)
+ user_activity_logs            | user_id                    | integer                     | YES         | 
+ user_activity_logs            | username                   | character varying           | NO          | 
+ user_activity_logs            | activity_type              | character varying           | NO          | 
+ user_activity_logs            | activity_description       | text                        | YES         | 
+ user_activity_logs            | target_id                  | integer                     | YES         | 
+ user_activity_logs            | target_type                | character varying           | YES         | 
+ user_activity_logs            | ip_address                 | character varying           | YES         | 
+ user_activity_logs            | user_agent                 | text                        | YES         | 
+ user_activity_logs            | metadata                   | jsonb                       | YES         | 
+ user_activity_logs            | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ user_requirements             | id                         | integer                     | NO          | nextval('user_requirements_id_seq'::regclass)
+ user_requirements             | file_id                    | integer                     | NO          | 
+ user_requirements             | material_id                | integer                     | YES         | 
+ user_requirements             | requirement_type           | character varying           | NO          | 
+ user_requirements             | requirement_title          | character varying           | NO          | 
+ user_requirements             | requirement_description    | text                        | YES         | 
+ user_requirements             | requirement_spec           | text                        | YES         | 
+ user_requirements             | status                     | character varying           | YES         | 'PENDING'::character varying
+ user_requirements             | priority                   | character varying           | YES         | 'NORMAL'::character varying
+ user_requirements             | assigned_to                | character varying           | YES         | 
+ user_requirements             | due_date                   | date                        | YES         | 
+ user_requirements             | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ user_requirements             | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ user_sessions                 | session_id                 | integer                     | NO          | nextval('user_sessions_session_id_seq'::regclass)
+ user_sessions                 | user_id                    | integer                     | YES         | 
+ user_sessions                 | refresh_token              | character varying           | NO          | 
+ user_sessions                 | expires_at                 | timestamp without time zone | NO          | 
+ user_sessions                 | ip_address                 | character varying           | YES         | 
+ user_sessions                 | user_agent                 | text                        | YES         | 
+ user_sessions                 | is_active                  | boolean                     | YES         | true
+ user_sessions                 | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ user_sessions                 | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ users                         | user_id                    | integer                     | NO          | nextval('users_user_id_seq'::regclass)
+ users                         | username                   | character varying           | NO          | 
+ users                         | password                   | character varying           | NO          | 
+ users                         | name                       | character varying           | NO          | 
+ users                         | email                      | character varying           | YES         | 
+ users                         | role                       | character varying           | YES         | 'user'::character varying
+ users                         | access_level               | character varying           | YES         | 'worker'::character varying
+ users                         | is_active                  | boolean                     | YES         | true
+ users                         | failed_login_attempts      | integer                     | YES         | 0
+ users                         | locked_until               | timestamp without time zone | YES         | 
+ users                         | department                 | character varying           | YES         | 
+ users                         | position                   | character varying           | YES         | 
+ users                         | phone                      | character varying           | YES         | 
+ users                         | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ users                         | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ users                         | last_login_at              | timestamp without time zone | YES         | 
+ users                         | status                     | character varying           | YES         | 'active'::character varying
+ valve_details                 | id                         | integer                     | NO          | nextval('valve_details_id_seq'::regclass)
+ valve_details                 | material_id                | integer                     | YES         | 
+ valve_details                 | file_id                    | integer                     | YES         | 
+ valve_details                 | valve_type                 | character varying           | YES         | 
+ valve_details                 | valve_subtype              | character varying           | YES         | 
+ valve_details                 | actuator_type              | character varying           | YES         | 
+ valve_details                 | connection_method          | character varying           | YES         | 
+ valve_details                 | pressure_rating            | character varying           | YES         | 
+ valve_details                 | pressure_class             | character varying           | YES         | 
+ valve_details                 | body_material              | character varying           | YES         | 
+ valve_details                 | trim_material              | character varying           | YES         | 
+ valve_details                 | size_inches                | character varying           | YES         | 
+ valve_details                 | fire_safe                  | boolean                     | YES         | 
+ valve_details                 | low_temp_service           | boolean                     | YES         | 
+ valve_details                 | special_features           | jsonb                       | YES         | 
+ valve_details                 | classification_confidence  | double precision            | YES         | 
+ valve_details                 | additional_info            | jsonb                       | YES         | 
+ valve_details                 | created_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+ valve_details                 | updated_at                 | timestamp without time zone | YES         | CURRENT_TIMESTAMP
+(616 rows)
+

docker-compose.override.yml

@@ -26,13 +26,13 @@ services:
   # 개발 환경에서는 모든 포트를 외부에 노출
   postgres:
     ports:
-      - "5432:5432"
+      - "${POSTGRES_PORT:-15432}:5432"
 
   redis:
     ports:
-      - "6379:6379"
+      - "${REDIS_PORT:-16379}:6379"
 
   pgadmin:
     ports:
-      - "5050:80"
+      - "${PGADMIN_PORT:-15050}:80"
 

docker-compose.proxy.yml

@@ -4,7 +4,7 @@ services:
     container_name: tk-mp-nginx-proxy
     restart: unless-stopped
     ports:
-      - "80:80"
+      - "8808:80"
     volumes:
       - ./nginx-proxy.conf:/etc/nginx/conf.d/default.conf
     networks:

docker-compose.yml

@@ -78,13 +78,13 @@ services:
       context: ./frontend
       dockerfile: Dockerfile
       args:
-        - VITE_API_URL=${VITE_API_URL:-http://localhost:18000}
+        - VITE_API_URL=${VITE_API_URL:-/api}
     container_name: tk-mp-frontend
     restart: unless-stopped
     ports:
-      - "${FRONTEND_PORT:-13000}:5173"
+      - "${FRONTEND_PORT:-13000}:3000"
     environment:
-      - VITE_API_URL=${VITE_API_URL:-http://localhost:18000}
+      - VITE_API_URL=${VITE_API_URL:-/api}
     depends_on:
       - backend
     networks:

frontend/PAGES_GUIDE.md

@@ -0,0 +1,348 @@
+# 프론트엔드 페이지 가이드
+
+이 문서는 TK-MP 프로젝트의 프론트엔드 페이지들의 역할과 기능을 정리한 가이드입니다.
+
+## 📋 목차
+
+- [인증 관련 페이지](#인증-관련-페이지)
+- [대시보드 및 메인 페이지](#대시보드-및-메인-페이지)
+- [프로젝트 관리 페이지](#프로젝트-관리-페이지)
+- [BOM 관리 페이지](#bom-관리-페이지)
+- [구매 관리 페이지](#구매-관리-페이지)
+- [시스템 관리 페이지](#시스템-관리-페이지)
+- [컴포넌트 구조](#컴포넌트-구조)
+
+---
+
+## 인증 관련 페이지
+
+### `LoginPage.jsx`
+- **역할**: 사용자 로그인 페이지
+- **기능**: 
+  - 사용자 인증 (이메일/비밀번호)
+  - 로그인 상태 관리
+  - 인증 실패 시 에러 메시지 표시
+- **라우팅**: `/login`
+- **접근 권한**: 모든 사용자 (비인증)
+
+---
+
+## 대시보드 및 메인 페이지
+
+### `DashboardPage.jsx`
+- **역할**: 메인 대시보드 페이지
+- **기능**:
+  - 프로젝트 선택 드롭다운
+  - **새로운 3개 BOM 카드**: 📤 BOM Upload, 📊 Revision Management, 📋 BOM Management
+  - 구매신청 관리 카드
+  - 관리자 전용 기능 (사용자 관리, 로그 관리)
+  - 프로젝트 생성/편집/삭제/비활성화
+- **라우팅**: `/dashboard`
+- **접근 권한**: 인증된 사용자
+- **디자인**: 데본씽크 스타일, 글래스모피즘 효과
+- **업데이트**: BOM 기능을 3개 전용 페이지로 분리
+
+### `MainPage.jsx`
+- **역할**: 초기 랜딩 페이지
+- **기능**: 기본 페이지 구조 및 네비게이션
+- **라우팅**: `/`
+- **접근 권한**: 인증된 사용자
+
+---
+
+## 프로젝트 관리 페이지
+
+### `ProjectsPage.jsx`
+- **역할**: 프로젝트 목록 및 관리
+- **기능**:
+  - 프로젝트 목록 조회
+  - 프로젝트 생성/수정/삭제
+  - 프로젝트 상태 관리
+- **라우팅**: `/projects`
+- **접근 권한**: 관리자
+
+### `InactiveProjectsPage.jsx`
+- **역할**: 비활성화된 프로젝트 관리
+- **기능**:
+  - 비활성 프로젝트 목록 조회
+  - 프로젝트 활성화/삭제
+  - 전체 선택/해제 기능
+- **라우팅**: `/inactive-projects`
+- **접근 권한**: 관리자
+
+### `JobRegistrationPage.jsx`
+- **역할**: 새로운 작업(Job) 등록
+- **기능**:
+  - 작업 정보 입력 및 등록
+  - 프로젝트 연결
+- **라우팅**: `/job-registration`
+- **접근 권한**: 관리자
+
+### `JobSelectionPage.jsx`
+- **역할**: 작업 선택 페이지
+- **기능**:
+  - 등록된 작업 목록 조회
+  - 작업 선택 및 이동
+- **라우팅**: `/job-selection`
+- **접근 권한**: 인증된 사용자
+
+---
+
+## BOM 관리 페이지
+
+### `BOMUploadPage.jsx` ⭐ 신규
+- **역할**: BOM 파일 업로드 전용 페이지
+- **기능**:
+  - 드래그 앤 드롭 파일 업로드
+  - 파일 검증 (형식: .xlsx, .xls, .csv / 최대 50MB)
+  - 실시간 업로드 진행률 표시
+  - 자동 BOM 이름 설정
+  - 업로드 완료 후 BOM 관리 페이지로 자동 이동
+- **라우팅**: `/bom-upload`
+- **접근 권한**: 인증된 사용자
+- **디자인**: 모던 UI, 글래스모피즘 효과
+
+### `BOMRevisionPage.jsx` ⭐ 신규
+- **역할**: BOM 리비전 관리 전용 페이지
+- **현재 상태**: 기본 구조 완성, 고급 기능 개발 예정
+- **기능**:
+  - BOM 파일 목록 표시
+  - 리비전 히스토리 개요
+  - 개발 예정 기능 안내 (타임라인, 비교, 롤백)
+- **라우팅**: `/bom-revision`
+- **접근 권한**: 인증된 사용자
+- **향후 계획**: 📊 리비전 타임라인, 🔍 변경사항 비교, ⏪ 롤백 시스템
+
+### `BOMManagementPage.jsx`
+- **역할**: BOM(Bill of Materials) 자재 관리 페이지
+- **기능**:
+  - 카테고리별 자재 조회 (PIPE, FITTING, FLANGE, VALVE, GASKET, BOLT, SUPPORT, SPECIAL, UNCLASSIFIED)
+  - 자재 선택 및 구매신청 (엑셀 내보내기)
+  - 구매신청된 자재 비활성화 표시
+  - 사용자 요구사항 입력 및 저장 (Brand, Additional Request)
+  - 카테고리별 전용 컴포넌트 구조
+- **라우팅**: `/bom-management`
+- **접근 권한**: 인증된 사용자
+- **특징**: 카테고리별 컴포넌트로 완전 분리된 구조
+
+### `NewMaterialsPage.jsx` (레거시)
+- **역할**: 기존 자재 관리 페이지 (현재 백업용)
+- **상태**: 사용 중단, `BOMManagementPage`로 대체됨
+- **기능**: 자재 분류, 편집, 내보내기 (기존 로직 보존)
+
+### `BOMStatusPage.jsx`
+- **역할**: BOM 상태 조회 페이지
+- **기능**:
+  - BOM 파일 상태 확인
+  - 처리 진행률 표시
+- **라우팅**: `/bom-status`
+- **접근 권한**: 인증된 사용자
+
+### `_deprecated/BOMWorkspacePage.jsx` (사용 중단)
+- **역할**: 기존 BOM 작업 공간 (사용 중단)
+- **상태**: `BOMUploadPage`와 `BOMRevisionPage`로 분리됨
+- **이유**: 업로드와 리비전 관리 기능을 별도 페이지로 분리하여 사용성 개선
+
+---
+
+## 구매 관리 페이지
+
+### `PurchaseRequestPage.jsx`
+- **역할**: 구매신청 관리 페이지
+- **기능**:
+  - 구매신청 목록 조회
+  - 구매신청 제목 편집 (인라인 편집)
+  - 원본 파일 정보 표시
+  - 엑셀 파일 다운로드
+  - 구매신청 자재 상세 조회
+- **라우팅**: `/purchase-requests`
+- **접근 권한**: 인증된 사용자
+- **특징**: BOM 페이지와 연동된 구매 워크플로우
+
+### `PurchaseBatchPage.jsx`
+- **역할**: 구매 배치 처리 페이지
+- **기능**:
+  - 대량 구매 처리
+  - 배치 작업 관리
+- **라우팅**: `/purchase-batch`
+- **접근 권한**: 관리자
+
+---
+
+## 시스템 관리 페이지
+
+### `UserManagementPage.jsx`
+- **역할**: 사용자 관리 페이지
+- **기능**:
+  - 사용자 목록 조회
+  - 사용자 생성/수정/삭제
+  - 권한 관리
+  - 사용자 상태 관리
+- **라우팅**: `/user-management`
+- **접근 권한**: 관리자
+
+### `SystemSettingsPage.jsx`
+- **역할**: 시스템 설정 페이지
+- **기능**:
+  - 시스템 전반 설정 관리
+  - 환경 변수 설정
+- **라우팅**: `/system-settings`
+- **접근 권한**: 관리자
+
+### `SystemSetupPage.jsx`
+- **역할**: 시스템 초기 설정 페이지
+- **기능**:
+  - 시스템 초기 구성
+  - 기본 데이터 설정
+- **라우팅**: `/system-setup`
+- **접근 권한**: 관리자
+
+### `SystemLogsPage.jsx`
+- **역할**: 시스템 로그 조회 페이지
+- **기능**:
+  - 시스템 로그 조회
+  - 로그 필터링 및 검색
+- **라우팅**: `/system-logs`
+- **접근 권한**: 관리자
+
+### `LogMonitoringPage.jsx`
+- **역할**: 로그 모니터링 페이지
+- **기능**:
+  - 실시간 로그 모니터링
+  - 로그 분석 및 알림
+- **라우팅**: `/log-monitoring`
+- **접근 권한**: 관리자
+
+### `AccountSettingsPage.jsx`
+- **역할**: 개인 계정 설정 페이지
+- **기능**:
+  - 개인 정보 수정
+  - 비밀번호 변경
+  - 계정 설정 관리
+- **라우팅**: `/account-settings`
+- **접근 권한**: 인증된 사용자
+
+---
+
+## 워크스페이스 페이지
+
+### `ProjectWorkspacePage.jsx`
+- **역할**: 프로젝트 작업 공간
+- **기능**:
+  - 프로젝트별 작업 환경
+  - 파일 관리 및 협업 도구
+- **라우팅**: `/project-workspace`
+- **접근 권한**: 인증된 사용자
+
+---
+
+## 컴포넌트 구조
+
+### `components/common/`
+- **ErrorBoundary.jsx**: 에러 경계 컴포넌트
+- **UserMenu.jsx**: 사용자 드롭다운 메뉴
+
+### `components/bom/`
+- **shared/**: 공통 BOM 컴포넌트
+  - `FilterableHeader.jsx`: 필터링 가능한 테이블 헤더
+  - `MaterialTable.jsx`: 자재 테이블 공통 컴포넌트
+- **materials/**: 카테고리별 자재 뷰 컴포넌트
+  - `PipeMaterialsView.jsx`: 파이프 자재 관리
+  - `FittingMaterialsView.jsx`: 피팅 자재 관리
+  - `FlangeMaterialsView.jsx`: 플랜지 자재 관리
+  - `ValveMaterialsView.jsx`: 밸브 자재 관리
+  - `GasketMaterialsView.jsx`: 가스켓 자재 관리
+  - `BoltMaterialsView.jsx`: 볼트 자재 관리
+  - `SupportMaterialsView.jsx`: 서포트 자재 관리
+  - `SpecialMaterialsView.jsx`: 특수 제작 자재 관리
+
+#### SPECIAL 카테고리 상세 기능
+`SpecialMaterialsView.jsx`는 특수 제작이 필요한 자재들을 관리하는 컴포넌트입니다:
+
+**주요 기능:**
+- **자동 타입 분류**: FLANGE, OIL PUMP, COMPRESSOR, VALVE, FITTING, PIPE 등 큰 범주 자동 인식
+- **정보 파싱**: 자재 설명을 도면, 항목1-4로 체계적 분리
+- **테이블 구조**: `Type | Drawing | Item 1 | Item 2 | Item 3 | Item 4 | Additional Request | Purchase Quantity`
+- **엑셀 내보내기**: P열 납기일 규칙 준수, 관리항목 자동 채움
+- **저장 기능**: 추가요청사항 저장/편집 (다른 카테고리와 동일)
+
+**처리 예시:**
+- `SAE SPECIAL FF, OIL PUMP, ASTM A105` → Type: OIL PUMP, Item1: SAE SPECIAL FF, Item2: OIL PUMP, Item3: ASTM A105
+- `FLG SPECIAL FF, COMPRESSOR(N11), ASTM A105` → Type: FLANGE, Item1: FLG SPECIAL FF, Item2: COMPRESSOR(N11), Item3: ASTM A105
+
+**분류 조건:**
+- `SPECIAL` 키워드 포함 (단, `SPECIFICATION` 제외)
+- 한글 `스페셜` 또는 `SPL` 키워드 포함
+
+### 기타 컴포넌트
+- **NavigationMenu.jsx**: 사이드바 네비게이션
+- **NavigationBar.jsx**: 상단 네비게이션 바
+- **FileUpload.jsx**: 파일 업로드 컴포넌트
+- **ProtectedRoute.jsx**: 권한 기반 라우트 보호
+
+---
+
+## 페이지 추가 시 규칙
+
+1. **새 페이지 생성 시 이 문서 업데이트 필수**
+2. **페이지 역할과 기능을 명확히 문서화**
+3. **라우팅 경로와 접근 권한 명시**
+4. **관련 컴포넌트와의 연관성 설명**
+5. **디자인 시스템 준수 (데본씽크 스타일, 글래스모피즘)**
+
+---
+
+## 디자인 시스템
+
+### 색상 팔레트
+- **Primary**: 블루 그라데이션 (#3b82f6 → #1d4ed8)
+- **Background**: 글래스 효과 (backdrop-filter: blur)
+- **Cards**: 20px 둥근 모서리, 그림자 효과
+
+### BOM 카테고리 색상
+- **PIPE**: #3b82f6 (파란색)
+- **FITTING**: #10b981 (초록색)
+- **FLANGE**: #f59e0b (주황색)
+- **VALVE**: #ef4444 (빨간색)
+- **GASKET**: #8b5cf6 (보라색)
+- **BOLT**: #6b7280 (회색)
+- **SUPPORT**: #f97316 (주황색)
+- **SPECIAL**: #ec4899 (핑크색)
+
+### 반응형 디자인
+- **Desktop**: 3-4열 그리드
+- **Tablet**: 2열 그리드  
+- **Mobile**: 1열 그리드
+
+### 타이포그래피
+- **Font Family**: Apple 시스템 폰트
+- **Weight**: 다양한 weight 활용 (400, 500, 600, 700)
+
+---
+
+*마지막 업데이트: 2024-10-17*
+*다음 페이지 추가 시 반드시 이 문서를 업데이트하세요.*
+
+## 최근 업데이트 내역
+
+### 2024-10-17: BOM 페이지 구조 개편 ⭐ 주요 업데이트
+- **새로운 페이지 추가**:
+  - `BOMUploadPage.jsx`: 전용 업로드 페이지 (드래그 앤 드롭, 파일 검증)
+  - `BOMRevisionPage.jsx`: 리비전 관리 페이지 (기본 구조, 향후 고급 기능 예정)
+- **기존 페이지 정리**:
+  - `BOMWorkspacePage.jsx` → `_deprecated/` 폴더로 이동 (사용 중단)
+  - 업로드와 리비전 기능을 별도 페이지로 분리하여 사용성 개선
+- **대시보드 개편**:
+  - BOM 관리를 3개 카드로 분리: 📤 Upload, 📊 Revision, 📋 Management
+  - 각 기능별 전용 페이지로 명확한 역할 분담
+- **라우팅 업데이트**:
+  - `/bom-upload`: 새 파일 업로드
+  - `/bom-revision`: 리비전 관리
+  - `/bom-management`: 자재 관리
+
+### 2024-10-17: SPECIAL 카테고리 추가
+- `SpecialMaterialsView.jsx` 컴포넌트 추가
+- 특수 제작 자재 관리 기능 구현
+- 자동 타입 분류 및 정보 파싱 시스템
+- 엑셀 내보내기 규칙 적용 (P열 납기일, 관리항목 자동 채움)
+- BOM 카테고리 색상 팔레트에 SPECIAL (#ec4899) 추가

frontend/README.md

@@ -50,40 +50,95 @@ uvicorn app.main:app --reload
 frontend/
 ├── src/
 │   ├── components/
-│   │   ├── Dashboard.jsx       # 대시보드
-│   │   ├── FileUpload.jsx      # 파일 업로드
-│   │   ├── MaterialList.jsx    # 자재 목록
-│   │   └── ProjectManager.jsx  # 프로젝트 관리
-│   ├── App.jsx                 # 메인 앱
-│   ├── main.jsx               # 엔트리 포인트
-│   └── index.css              # 전역 스타일
+│   │   ├── common/             # 공통 컴포넌트
+│   │   ├── bom/               # BOM 관련 컴포넌트
+│   │   │   ├── materials/     # 카테고리별 자재 뷰
+│   │   │   └── shared/        # BOM 공통 컴포넌트
+│   │   └── ...                # 기타 컴포넌트
+│   ├── pages/                 # 페이지 컴포넌트
+│   │   ├── DashboardPage.jsx  # 메인 대시보드
+│   │   ├── BOMManagementPage.jsx # BOM 관리
+│   │   ├── PurchaseRequestPage.jsx # 구매신청 관리
+│   │   └── ...                # 기타 페이지들
+│   ├── App.jsx                # 메인 앱
+│   ├── main.jsx              # 엔트리 포인트
+│   └── index.css             # 전역 스타일
+├── PAGES_GUIDE.md            # 📋 페이지 역할 가이드
 ├── package.json
 └── vite.config.js
 ```
 
-## 🎯 주요 컴포넌트
+## 📋 페이지 가이드
 
-### Dashboard
-- 프로젝트 통계 및 현황 표시
-- 최근 활동 목록
-- 실시간 데이터 업데이트
+**모든 페이지의 역할과 기능은 [`PAGES_GUIDE.md`](./PAGES_GUIDE.md)에 상세히 문서화되어 있습니다.**
 
-### FileUpload
-- 드래그&드롭 인터페이스
-- Excel 파일 검증
-- 업로드 진행률 표시
-- 배치 파일 처리
+### 🔄 페이지 개발 규칙
 
-### MaterialList
-- 페이지네이션이 있는 데이터 그리드
-- 실시간 검색 및 필터링
-- CSV 내보내기
-- 정렬 및 컬럼 관리
+1. **새 페이지 생성 시 `PAGES_GUIDE.md` 업데이트 필수**
+2. **페이지 역할, 기능, 라우팅, 접근 권한을 명확히 문서화**
+3. **관련 컴포넌트와의 연관성 설명**
+4. **디자인 시스템 준수 (데본씽크 스타일, 글래스모피즘)**
 
-### ProjectManager
-- 프로젝트 CRUD 작업
-- 카드 형태의 프로젝트 표시
-- 모달 기반 편집
+### ⚠️ **Docker 배포 시 주의사항**
+
+**프론트엔드 변경사항이 반영되지 않을 때:**
+
+```bash
+# 1. 프론트엔드 컨테이너 완전 재빌드 (캐시 문제 해결)
+docker-compose stop frontend
+docker-compose rm -f frontend
+docker-compose build --no-cache frontend
+docker-compose up -d frontend
+
+# 2. 배포 후 index 파일 버전 확인
+docker exec tk-mp-frontend find /usr/share/nginx/html -name "index-*.js"
+
+# 3. 로컬 빌드 버전과 비교
+ls -la frontend/dist/assets/index-*.js
+```
+
+**주의:** Docker 컨테이너는 이전 빌드를 캐시할 수 있어 최신 변경사항이 반영되지 않을 수 있습니다. 
+변경사항이 보이지 않으면 반드시 `--no-cache` 옵션으로 재빌드하세요.
+
+### 🚀 **빠른 배포 명령어**
+
+```bash
+# 프론트엔드 빠른 재배포 (한 줄 명령어)
+docker-compose stop frontend && docker-compose rm -f frontend && docker-compose build --no-cache frontend && docker-compose up -d frontend
+
+# 전체 시스템 재시작
+docker-compose restart
+
+# 특정 서비스만 재시작
+docker-compose restart backend
+docker-compose restart frontend
+```
+
+## 🎯 주요 페이지
+
+### DashboardPage
+- 프로젝트 선택 드롭다운
+- 프로젝트별 기능 카드 (BOM 관리, 구매신청 관리)
+- 관리자 전용 기능 (사용자 관리, 로그 관리)
+- 데본씽크 스타일 디자인
+
+### BOMManagementPage
+- 카테고리별 자재 관리 (PIPE, FITTING, FLANGE, VALVE, GASKET, BOLT, SUPPORT)
+- 구매신청된 자재 비활성화 표시
+- 엑셀 내보내기 및 서버 저장
+- 사용자 요구사항 입력
+
+### PurchaseRequestPage
+- 구매신청 목록 조회 및 관리
+- 구매신청 제목 인라인 편집
+- 원본 파일 정보 표시
+- 엑셀 파일 다운로드
+
+### 카테고리별 자재 뷰 컴포넌트
+- 각 자재 카테고리별 전용 뷰 컴포넌트
+- 통일된 테이블 형태 UI
+- 정렬, 필터링, 전체 선택 기능
+- 구매신청된 자재 비활성화 처리
 
 ## 📱 반응형 디자인
 

frontend/package-lock.json

@@ -34,20 +34,6 @@
         "vite": "^4.5.0"
       }
     },
-    "node_modules/@ampproject/remapping": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/@ampproject/remapping/-/remapping-2.3.0.tgz",
-      "integrity": "sha512-30iZtAPgz+LTIYoeivqYo853f02jBYSd5uGnGpkFV0M3xOt9aN73erkgYAmZU43x4VfqcnLxW9Kpg3R5LC4YYw==",
-      "dev": true,
-      "license": "Apache-2.0",
-      "dependencies": {
-        "@jridgewell/gen-mapping": "^0.3.5",
-        "@jridgewell/trace-mapping": "^0.3.24"
-      },
-      "engines": {
-        "node": ">=6.0.0"
-      }
-    },
     "node_modules/@babel/code-frame": {
       "version": "7.27.1",
       "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.27.1.tgz",
@@ -63,9 +49,9 @@
       }
     },
     "node_modules/@babel/compat-data": {
-      "version": "7.28.0",
-      "resolved": "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.28.0.tgz",
-      "integrity": "sha512-60X7qkglvrap8mn1lh2ebxXdZYtUcpd7gsmy9kLaBJ4i/WdY8PqTSdxyA8qraikqKQK5C1KRBKXqznrVapyNaw==",
+      "version": "7.28.4",
+      "resolved": "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.28.4.tgz",
+      "integrity": "sha512-YsmSKC29MJwf0gF8Rjjrg5LQCmyh+j/nD8/eP7f+BeoQTKYqs9RoWbjGOdy0+1Ekr68RJZMUOPVQaQisnIo4Rw==",
       "dev": true,
       "license": "MIT",
       "engines": {
@@ -73,22 +59,22 @@
       }
     },
     "node_modules/@babel/core": {
-      "version": "7.28.0",
-      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.28.0.tgz",
-      "integrity": "sha512-UlLAnTPrFdNGoFtbSXwcGFQBtQZJCNjaN6hQNP3UPvuNXT1i82N26KL3dZeIpNalWywr9IuQuncaAfUaS1g6sQ==",
+      "version": "7.28.4",
+      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.28.4.tgz",
+      "integrity": "sha512-2BCOP7TN8M+gVDj7/ht3hsaO/B/n5oDbiAyyvnRlNOs+u1o+JWNYTQrmpuNp1/Wq2gcFrI01JAW+paEKDMx/CA==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@ampproject/remapping": "^2.2.0",
         "@babel/code-frame": "^7.27.1",
-        "@babel/generator": "^7.28.0",
+        "@babel/generator": "^7.28.3",
         "@babel/helper-compilation-targets": "^7.27.2",
-        "@babel/helper-module-transforms": "^7.27.3",
-        "@babel/helpers": "^7.27.6",
-        "@babel/parser": "^7.28.0",
+        "@babel/helper-module-transforms": "^7.28.3",
+        "@babel/helpers": "^7.28.4",
+        "@babel/parser": "^7.28.4",
         "@babel/template": "^7.27.2",
-        "@babel/traverse": "^7.28.0",
-        "@babel/types": "^7.28.0",
+        "@babel/traverse": "^7.28.4",
+        "@babel/types": "^7.28.4",
+        "@jridgewell/remapping": "^2.3.5",
         "convert-source-map": "^2.0.0",
         "debug": "^4.1.0",
         "gensync": "^1.0.0-beta.2",
@@ -111,13 +97,13 @@
       "license": "MIT"
     },
     "node_modules/@babel/generator": {
-      "version": "7.28.0",
-      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.28.0.tgz",
-      "integrity": "sha512-lJjzvrbEeWrhB4P3QBsH7tey117PjLZnDbLiQEKjQ/fNJTjuq4HSqgFA+UNSwZT8D7dxxbnuSBMsa1lrWzKlQg==",
+      "version": "7.28.3",
+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.28.3.tgz",
+      "integrity": "sha512-3lSpxGgvnmZznmBkCRnVREPUFJv2wrv9iAoFDvADJc0ypmdOxdUtcLeBgBJ6zE0PMeTKnxeQzyk0xTBq4Ep7zw==",
       "license": "MIT",
       "dependencies": {
-        "@babel/parser": "^7.28.0",
-        "@babel/types": "^7.28.0",
+        "@babel/parser": "^7.28.3",
+        "@babel/types": "^7.28.2",
         "@jridgewell/gen-mapping": "^0.3.12",
         "@jridgewell/trace-mapping": "^0.3.28",
         "jsesc": "^3.0.2"
@@ -166,15 +152,15 @@
       }
     },
     "node_modules/@babel/helper-module-transforms": {
-      "version": "7.27.3",
-      "resolved": "https://registry.npmjs.org/@babel/helper-module-transforms/-/helper-module-transforms-7.27.3.tgz",
-      "integrity": "sha512-dSOvYwvyLsWBeIRyOeHXp5vPj5l1I011r52FM1+r1jCERv+aFXYk4whgQccYEGYxK2H3ZAIA8nuPkQ0HaUo3qg==",
+      "version": "7.28.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-module-transforms/-/helper-module-transforms-7.28.3.tgz",
+      "integrity": "sha512-gytXUbs8k2sXS9PnQptz5o0QnpLL51SwASIORY6XaBKF88nsOT0Zw9szLqlSGQDP/4TljBAD5y98p2U1fqkdsw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
         "@babel/helper-module-imports": "^7.27.1",
         "@babel/helper-validator-identifier": "^7.27.1",
-        "@babel/traverse": "^7.27.3"
+        "@babel/traverse": "^7.28.3"
       },
       "engines": {
         "node": ">=6.9.0"
@@ -222,26 +208,26 @@
       }
     },
     "node_modules/@babel/helpers": {
-      "version": "7.27.6",
-      "resolved": "https://registry.npmjs.org/@babel/helpers/-/helpers-7.27.6.tgz",
-      "integrity": "sha512-muE8Tt8M22638HU31A3CgfSUciwz1fhATfoVai05aPXGor//CdWDCbnlY1yvBPo07njuVOCNGCSp/GTt12lIug==",
+      "version": "7.28.4",
+      "resolved": "https://registry.npmjs.org/@babel/helpers/-/helpers-7.28.4.tgz",
+      "integrity": "sha512-HFN59MmQXGHVyYadKLVumYsA9dBFun/ldYxipEjzA4196jpLZd8UjEEBLkbEkvfYreDqJhZxYAWFPtrfhNpj4w==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
         "@babel/template": "^7.27.2",
-        "@babel/types": "^7.27.6"
+        "@babel/types": "^7.28.4"
       },
       "engines": {
         "node": ">=6.9.0"
       }
     },
     "node_modules/@babel/parser": {
-      "version": "7.28.0",
-      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.28.0.tgz",
-      "integrity": "sha512-jVZGvOxOuNSsuQuLRTh13nU0AogFlw32w/MT+LV6D3sP5WdbW61E77RnkbaO2dUvmPAYrBDJXGn5gGS6tH4j8g==",
+      "version": "7.28.4",
+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.28.4.tgz",
+      "integrity": "sha512-yZbBqeM6TkpP9du/I2pUZnJsRMGGvOuIrhjzC1AwHwW+6he4mni6Bp/m8ijn0iOuZuPI2BfkCoSRunpyjnrQKg==",
       "license": "MIT",
       "dependencies": {
-        "@babel/types": "^7.28.0"
+        "@babel/types": "^7.28.4"
       },
       "bin": {
         "parser": "bin/babel-parser.js"
@@ -283,9 +269,9 @@
       }
     },
     "node_modules/@babel/runtime": {
-      "version": "7.27.6",
-      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.27.6.tgz",
-      "integrity": "sha512-vbavdySgbTTrmFE+EsiqUTzlOr5bzlnJtUv9PynGCAKvfQqjIXbvFdumPM/GxMDfyuGMJaJAU6TO4zc1Jf1i8Q==",
+      "version": "7.28.4",
+      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.28.4.tgz",
+      "integrity": "sha512-Q/N6JNWvIvPnLDvjlE1OUBLPQHH6l3CltCEsHIujp45zQUSSh8K+gHnaEX45yAT1nyngnINhvWtzN+Nb9D8RAQ==",
       "license": "MIT",
       "engines": {
         "node": ">=6.9.0"
@@ -306,17 +292,17 @@
       }
     },
     "node_modules/@babel/traverse": {
-      "version": "7.28.0",
-      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.28.0.tgz",
-      "integrity": "sha512-mGe7UK5wWyh0bKRfupsUchrQGqvDbZDbKJw+kcRGSmdHVYrv+ltd0pnpDTVpiTqnaBru9iEvA8pz8W46v0Amwg==",
+      "version": "7.28.4",
+      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.28.4.tgz",
+      "integrity": "sha512-YEzuboP2qvQavAcjgQNVgsvHIDv6ZpwXvcvjmyySP2DIMuByS/6ioU5G9pYrWHM6T2YDfc7xga9iNzYOs12CFQ==",
       "license": "MIT",
       "dependencies": {
         "@babel/code-frame": "^7.27.1",
-        "@babel/generator": "^7.28.0",
+        "@babel/generator": "^7.28.3",
         "@babel/helper-globals": "^7.28.0",
-        "@babel/parser": "^7.28.0",
+        "@babel/parser": "^7.28.4",
         "@babel/template": "^7.27.2",
-        "@babel/types": "^7.28.0",
+        "@babel/types": "^7.28.4",
         "debug": "^4.3.1"
       },
       "engines": {
@@ -324,9 +310,9 @@
       }
     },
     "node_modules/@babel/types": {
-      "version": "7.28.1",
-      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.28.1.tgz",
-      "integrity": "sha512-x0LvFTekgSX+83TI28Y9wYPUfzrnl2aT5+5QLnO6v7mSJYtEEevuDRN0F0uSHRk1G1IWZC43o00Y0xDDrpBGPQ==",
+      "version": "7.28.4",
+      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.28.4.tgz",
+      "integrity": "sha512-bkFqkLhh3pMBUQQkpVgWDWq/lqzc2678eUyDlTBhRqhCHFguYYGM0Efga7tYk4TogG/3x0EEl66/OQ+WGbWB/Q==",
       "license": "MIT",
       "dependencies": {
         "@babel/helper-string-parser": "^7.27.1",
@@ -375,9 +361,9 @@
       "license": "MIT"
     },
     "node_modules/@emotion/is-prop-valid": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/@emotion/is-prop-valid/-/is-prop-valid-1.3.1.tgz",
-      "integrity": "sha512-/ACwoqx7XQi9knQs/G0qKvv5teDMhD7bXYns9N/wM8ah8iNb8jZ2uNO0YOgiq2o2poIvVtJS2YALasQuMSQ7Kw==",
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/@emotion/is-prop-valid/-/is-prop-valid-1.4.0.tgz",
+      "integrity": "sha512-QgD4fyscGcbbKwJmqNvUMSE02OsHUa+lAWKdEUIJKgqe5IwRSKd7+KhibEWdaKwgjLj0DRSHA9biAIqGBk05lw==",
       "license": "MIT",
       "dependencies": {
         "@emotion/memoize": "^0.9.0"
@@ -857,9 +843,9 @@
       }
     },
     "node_modules/@eslint-community/eslint-utils": {
-      "version": "4.7.0",
-      "resolved": "https://registry.npmjs.org/@eslint-community/eslint-utils/-/eslint-utils-4.7.0.tgz",
-      "integrity": "sha512-dyybb3AcajC7uha6CvhdVRJqaKyn7w2YKqKyAN37NKYgZT36w+iRb0Dymmc5qEJ549c/S31cMMSFd75bteCpCw==",
+      "version": "4.9.0",
+      "resolved": "https://registry.npmjs.org/@eslint-community/eslint-utils/-/eslint-utils-4.9.0.tgz",
+      "integrity": "sha512-ayVFHdtZ+hsq1t2Dy24wCmGXGe4q9Gu3smhLYALJrr473ZH27MsnSL+LKUlimp4BWJqMDMLmPpx/Q9R3OAlL4g==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -958,15 +944,26 @@
       "license": "BSD-3-Clause"
     },
     "node_modules/@jridgewell/gen-mapping": {
-      "version": "0.3.12",
-      "resolved": "https://registry.npmjs.org/@jridgewell/gen-mapping/-/gen-mapping-0.3.12.tgz",
-      "integrity": "sha512-OuLGC46TjB5BbN1dH8JULVVZY4WTdkF7tV9Ys6wLL1rubZnCMstOhNHueU5bLCrnRuDhKPDM4g6sw4Bel5Gzqg==",
+      "version": "0.3.13",
+      "resolved": "https://registry.npmjs.org/@jridgewell/gen-mapping/-/gen-mapping-0.3.13.tgz",
+      "integrity": "sha512-2kkt/7niJ6MgEPxF0bYdQ6etZaA+fQvDcLKckhy1yIQOzaoKjBBjSj63/aLVjYE3qhRt5dvM+uUyfCg6UKCBbA==",
       "license": "MIT",
       "dependencies": {
         "@jridgewell/sourcemap-codec": "^1.5.0",
         "@jridgewell/trace-mapping": "^0.3.24"
       }
     },
+    "node_modules/@jridgewell/remapping": {
+      "version": "2.3.5",
+      "resolved": "https://registry.npmjs.org/@jridgewell/remapping/-/remapping-2.3.5.tgz",
+      "integrity": "sha512-LI9u/+laYG4Ds1TDKSJW2YPrIlcVYOwi2fUC6xB43lueCjgxV4lffOCZCtYFiH6TNOX+tQKXx97T4IKHbhyHEQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@jridgewell/gen-mapping": "^0.3.5",
+        "@jridgewell/trace-mapping": "^0.3.24"
+      }
+    },
     "node_modules/@jridgewell/resolve-uri": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/@jridgewell/resolve-uri/-/resolve-uri-3.1.2.tgz",
@@ -977,15 +974,15 @@
       }
     },
     "node_modules/@jridgewell/sourcemap-codec": {
-      "version": "1.5.4",
-      "resolved": "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.5.4.tgz",
-      "integrity": "sha512-VT2+G1VQs/9oz078bLrYbecdZKs912zQlkelYpuf+SXF+QvZDYJlbx/LSx+meSAwdDFnF8FVXW92AVjjkVmgFw==",
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-      "resolved": "https://registry.npmjs.org/react-is/-/react-is-19.1.0.tgz",
-      "integrity": "sha512-Oe56aUPnkHyyDxxkvqtd7KkdQP5uIUfHxd5XTb3wE9d/kRnZLmKbDB0GWk919tdQ+mxxPtG6EAs6RMT6i1qtHg==",
+      "version": "19.2.0",
+      "resolved": "https://registry.npmjs.org/react-is/-/react-is-19.2.0.tgz",
+      "integrity": "sha512-x3Ax3kNSMIIkyVYhWPyO09bu0uttcAIoecO/um/rKGQ4EltYWVYtyiGkS/3xMynrbVQdS69Jhlv8FXUEZehlzA==",
       "license": "MIT"
     },
     "node_modules/react-refresh": {
@@ -5308,6 +5318,15 @@
       "dev": true,
       "license": "ISC"
     },
+    "node_modules/yaml": {
+      "version": "1.10.2",
+      "resolved": "https://registry.npmjs.org/yaml/-/yaml-1.10.2.tgz",
+      "integrity": "sha512-r3vXyErRCYJ7wg28yvBY5VSoAF8ZvlcW9/BwUzEtUsjvX/DKs24dIkuwjtuprwJJHsbyUbLApepYTR1BN4uHrg==",
+      "license": "ISC",
+      "engines": {
+        "node": ">= 6"
+      }
+    },
     "node_modules/yocto-queue": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/yocto-queue/-/yocto-queue-0.1.0.tgz",

frontend/src/api.js

@@ -3,8 +3,7 @@ import { logApiError } from './utils/errorLogger';
 
 // 환경변수에서 API URL을 읽음 (Vite 기준)
 // 프로덕션에서는 nginx 프록시를 통해 /api 경로 사용
-const API_BASE_URL = import.meta.env.VITE_API_URL || 
-  (import.meta.env.DEV ? 'http://localhost:18000' : '/api');
+const API_BASE_URL = '/api';
 
 console.log('API Base URL:', API_BASE_URL);
 console.log('Environment:', import.meta.env.MODE);

frontend/src/components/ErrorBoundary.jsx

@@ -1,268 +0,0 @@
-import React from 'react';
-import errorLogger from '../utils/errorLogger';
-
-class ErrorBoundary extends React.Component {
-    constructor(props) {
-        super(props);
-        this.state = { 
-            hasError: false, 
-            error: null, 
-            errorInfo: null 
-        };
-    }
-
-    static getDerivedStateFromError(error) {
-        // 다음 렌더링에서 폴백 UI가 보이도록 상태를 업데이트합니다.
-        return { hasError: true };
-    }
-
-    componentDidCatch(error, errorInfo) {
-        // 오류 정보를 상태에 저장
-        this.setState({
-            error: error,
-            errorInfo: errorInfo
-        });
-
-        // 오류 로깅
-        errorLogger.logError({
-            type: 'react_error_boundary',
-            message: error.message,
-            stack: error.stack,
-            componentStack: errorInfo.componentStack,
-            timestamp: new Date().toISOString(),
-            url: window.location.href,
-            props: this.props.errorContext || {}
-        });
-
-        console.error('ErrorBoundary caught an error:', error, errorInfo);
-    }
-
-    handleReload = () => {
-        window.location.reload();
-    };
-
-    handleGoHome = () => {
-        window.location.href = '/';
-    };
-
-    handleReportError = () => {
-        const errorReport = {
-            error: this.state.error?.message,
-            stack: this.state.error?.stack,
-            componentStack: this.state.errorInfo?.componentStack,
-            url: window.location.href,
-            timestamp: new Date().toISOString(),
-            userAgent: navigator.userAgent
-        };
-
-        // 오류 보고서를 클립보드에 복사
-        navigator.clipboard.writeText(JSON.stringify(errorReport, null, 2))
-            .then(() => {
-                alert('오류 정보가 클립보드에 복사되었습니다.');
-            })
-            .catch(() => {
-                // 클립보드 복사 실패 시 텍스트 영역에 표시
-                const textarea = document.createElement('textarea');
-                textarea.value = JSON.stringify(errorReport, null, 2);
-                document.body.appendChild(textarea);
-                textarea.select();
-                document.execCommand('copy');
-                document.body.removeChild(textarea);
-                alert('오류 정보가 클립보드에 복사되었습니다.');
-            });
-    };
-
-    render() {
-        if (this.state.hasError) {
-            return (
-                <div style={{
-                    minHeight: '100vh',
-                    display: 'flex',
-                    alignItems: 'center',
-                    justifyContent: 'center',
-                    backgroundColor: '#f8f9fa',
-                    padding: '20px'
-                }}>
-                    <div style={{
-                        maxWidth: '600px',
-                        width: '100%',
-                        backgroundColor: 'white',
-                        borderRadius: '8px',
-                        boxShadow: '0 4px 6px rgba(0, 0, 0, 0.1)',
-                        padding: '40px',
-                        textAlign: 'center'
-                    }}>
-                        <div style={{
-                            fontSize: '48px',
-                            marginBottom: '20px'
-                        }}>
-                            😵
-                        </div>
-                        
-                        <h1 style={{
-                            fontSize: '24px',
-                            fontWeight: '600',
-                            color: '#dc3545',
-                            marginBottom: '16px'
-                        }}>
-                            앗! 문제가 발생했습니다
-                        </h1>
-                        
-                        <p style={{
-                            fontSize: '16px',
-                            color: '#6c757d',
-                            marginBottom: '30px',
-                            lineHeight: '1.5'
-                        }}>
-                            예상치 못한 오류가 발생했습니다. <br />
-                            이 문제는 자동으로 개발팀에 보고되었습니다.
-                        </p>
-
-                        <div style={{
-                            display: 'flex',
-                            gap: '12px',
-                            justifyContent: 'center',
-                            flexWrap: 'wrap',
-                            marginBottom: '30px'
-                        }}>
-                            <button
-                                onClick={this.handleReload}
-                                style={{
-                                    padding: '12px 24px',
-                                    backgroundColor: '#007bff',
-                                    color: 'white',
-                                    border: 'none',
-                                    borderRadius: '6px',
-                                    fontSize: '14px',
-                                    fontWeight: '500',
-                                    cursor: 'pointer',
-                                    transition: 'background-color 0.2s'
-                                }}
-                                onMouseOver={(e) => e.target.style.backgroundColor = '#0056b3'}
-                                onMouseOut={(e) => e.target.style.backgroundColor = '#007bff'}
-                            >
-                                🔄 페이지 새로고침
-                            </button>
-                            
-                            <button
-                                onClick={this.handleGoHome}
-                                style={{
-                                    padding: '12px 24px',
-                                    backgroundColor: '#28a745',
-                                    color: 'white',
-                                    border: 'none',
-                                    borderRadius: '6px',
-                                    fontSize: '14px',
-                                    fontWeight: '500',
-                                    cursor: 'pointer',
-                                    transition: 'background-color 0.2s'
-                                }}
-                                onMouseOver={(e) => e.target.style.backgroundColor = '#1e7e34'}
-                                onMouseOut={(e) => e.target.style.backgroundColor = '#28a745'}
-                            >
-                                🏠 홈으로 이동
-                            </button>
-                            
-                            <button
-                                onClick={this.handleReportError}
-                                style={{
-                                    padding: '12px 24px',
-                                    backgroundColor: '#6c757d',
-                                    color: 'white',
-                                    border: 'none',
-                                    borderRadius: '6px',
-                                    fontSize: '14px',
-                                    fontWeight: '500',
-                                    cursor: 'pointer',
-                                    transition: 'background-color 0.2s'
-                                }}
-                                onMouseOver={(e) => e.target.style.backgroundColor = '#545b62'}
-                                onMouseOut={(e) => e.target.style.backgroundColor = '#6c757d'}
-                            >
-                                📋 오류 정보 복사
-                            </button>
-                        </div>
-
-                        {/* 개발 환경에서만 상세 오류 정보 표시 */}
-                        {process.env.NODE_ENV === 'development' && this.state.error && (
-                            <details style={{
-                                textAlign: 'left',
-                                backgroundColor: '#f8f9fa',
-                                padding: '16px',
-                                borderRadius: '4px',
-                                marginTop: '20px',
-                                fontSize: '12px',
-                                fontFamily: 'monospace'
-                            }}>
-                                <summary style={{
-                                    cursor: 'pointer',
-                                    fontWeight: '600',
-                                    marginBottom: '8px',
-                                    color: '#495057'
-                                }}>
-                                    개발자 정보 (클릭하여 펼치기)
-                                </summary>
-                                
-                                <div style={{ marginBottom: '12px' }}>
-                                    <strong>오류 메시지:</strong>
-                                    <pre style={{
-                                        whiteSpace: 'pre-wrap',
-                                        wordBreak: 'break-word',
-                                        margin: '4px 0',
-                                        color: '#dc3545'
-                                    }}>
-                                        {this.state.error.message}
-                                    </pre>
-                                </div>
-                                
-                                <div style={{ marginBottom: '12px' }}>
-                                    <strong>스택 트레이스:</strong>
-                                    <pre style={{
-                                        whiteSpace: 'pre-wrap',
-                                        wordBreak: 'break-word',
-                                        margin: '4px 0',
-                                        fontSize: '11px',
-                                        color: '#6c757d'
-                                    }}>
-                                        {this.state.error.stack}
-                                    </pre>
-                                </div>
-                                
-                                {this.state.errorInfo?.componentStack && (
-                                    <div>
-                                        <strong>컴포넌트 스택:</strong>
-                                        <pre style={{
-                                            whiteSpace: 'pre-wrap',
-                                            wordBreak: 'break-word',
-                                            margin: '4px 0',
-                                            fontSize: '11px',
-                                            color: '#6c757d'
-                                        }}>
-                                            {this.state.errorInfo.componentStack}
-                                        </pre>
-                                    </div>
-                                )}
-                            </details>
-                        )}
-                        
-                        <div style={{
-                            marginTop: '30px',
-                            padding: '16px',
-                            backgroundColor: '#e3f2fd',
-                            borderRadius: '4px',
-                            fontSize: '14px',
-                            color: '#1565c0'
-                        }}>
-                            💡 <strong>도움말:</strong> 문제가 계속 발생하면 페이지를 새로고침하거나 
-                            브라우저 캐시를 삭제해보세요.
-                        </div>
-                    </div>
-                </div>
-            );
-        }
-
-        return this.props.children;
-    }
-}
-
-export default ErrorBoundary;

frontend/src/components/NavigationBar.css

@@ -213,7 +213,7 @@
     box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
     overflow: hidden;
     animation: dropdownSlide 0.3s ease-out;
-    z-index: 1000;
+    z-index: 1050;
 }
 
 @keyframes dropdownSlide {

frontend/src/components/bom/index.js

@@ -0,0 +1,3 @@
+// BOM Components
+export * from './materials';
+export * from './shared';

frontend/src/components/bom/materials/BoltMaterialsView.jsx

@@ -0,0 +1,742 @@
+import React, { useState } from 'react';
+import { exportMaterialsToExcel, createExcelBlob } from '../../../utils/excelExport';
+import api from '../../../api';
+import { FilterableHeader } from '../shared';
+
+const BoltMaterialsView = ({ 
+  materials, 
+  selectedMaterials, 
+  setSelectedMaterials,
+  userRequirements,
+  setUserRequirements,
+  purchasedMaterials,
+  onPurchasedMaterialsUpdate,
+  updateMaterial, // 자재 업데이트 함수
+  jobNo,
+  fileId,
+  user 
+}) => {
+  const [sortConfig, setSortConfig] = useState({ key: null, direction: 'asc' });
+  const [columnFilters, setColumnFilters] = useState({});
+  const [showFilterDropdown, setShowFilterDropdown] = useState(null);
+  const [savedRequests, setSavedRequests] = useState({}); // 저장된 추가요구사항 상태
+  const [editingRequest, setEditingRequest] = useState({}); // 추가요구사항 편집 모드
+  const [savingRequest, setSavingRequest] = useState({}); // 추가요구사항 저장 중 상태
+
+  // 컴포넌트 마운트 시 저장된 데이터 로드
+  React.useEffect(() => {
+    const loadSavedData = () => {
+      const savedRequestsData = {};
+      
+      materials.forEach(material => {
+        if (material.user_requirement && material.user_requirement.trim()) {
+          savedRequestsData[material.id] = material.user_requirement.trim();
+        }
+      });
+      
+      setSavedRequests(savedRequestsData);
+    };
+
+    if (materials && materials.length > 0) {
+      loadSavedData();
+    } else {
+      setSavedRequests({});
+    }
+  }, [materials]);
+
+  // 추가요구사항 저장 함수
+  const handleSaveRequest = async (materialId, request) => {
+    setSavingRequest(prev => ({ ...prev, [materialId]: true }));
+    try {
+      await api.patch(`/materials/${materialId}/user-requirement`, { 
+        user_requirement: request.trim() 
+      });
+      setSavedRequests(prev => ({ ...prev, [materialId]: request.trim() }));
+      setEditingRequest(prev => ({ ...prev, [materialId]: false }));
+      setUserRequirements(prev => ({ ...prev, [materialId]: '' }));
+      
+      if (updateMaterial) {
+        updateMaterial(materialId, { user_requirement: request.trim() });
+      }
+    } catch (error) {
+      console.error('추가요구사항 저장 실패:', error);
+      alert('추가요구사항 저장에 실패했습니다.');
+    } finally {
+      setSavingRequest(prev => ({ ...prev, [materialId]: false }));
+    }
+  };
+
+  // 추가요구사항 편집 시작
+  const handleEditRequest = (materialId, currentRequest) => {
+    setEditingRequest(prev => ({ ...prev, [materialId]: true }));
+    setUserRequirements(prev => ({ ...prev, [materialId]: currentRequest || '' }));
+  };
+
+  // 볼트 추가요구사항 추출 함수
+  const extractBoltAdditionalRequirements = (description) => {
+    const additionalReqs = [];
+    
+    // 표면처리 패턴 확인
+    const surfacePatterns = {
+      'ELEC.GALV': 'ELEC.GALV',
+      'ELEC GALV': 'ELEC.GALV',
+      'GALVANIZED': 'GALVANIZED',
+      'GALV': 'GALV',
+      'HOT DIP GALV': 'HDG',
+      'HDG': 'HDG',
+      'ZINC PLATED': 'ZINC PLATED',
+      'ZINC': 'ZINC',
+      'PLAIN': 'PLAIN'
+    };
+    
+    for (const [pattern, treatment] of Object.entries(surfacePatterns)) {
+      if (description.includes(pattern)) {
+        additionalReqs.push(treatment);
+        break; // 첫 번째 매치만 사용
+      }
+    }
+    
+    return additionalReqs.join(', ') || '-';
+  };
+
+  const parseBoltInfo = (material) => {
+    const qty = Math.round(material.quantity || 0);
+    
+    // 플랜지당 볼트 세트 수 추출 (예: (8), (4))
+    const boltDetails = material.bolt_details || {};
+    let boltsPerFlange = boltDetails.dimensions?.bolts_per_flange || 1;
+    
+    // 백엔드에서 정보가 없으면 원본 설명에서 직접 추출
+    if (boltsPerFlange === 1) {
+      const description = material.original_description || '';
+      const flangePattern = description.match(/\((\d+)\)/);
+      if (flangePattern) {
+        boltsPerFlange = parseInt(flangePattern[1]);
+      }
+    }
+    
+    // 실제 필요한 볼트 수 = 플랜지 수 × 플랜지당 볼트 세트 수
+    const totalBoltsNeeded = qty * boltsPerFlange;
+    const safetyQty = Math.ceil(totalBoltsNeeded * 1.05); // 5% 여유율
+    const purchaseQty = Math.ceil(safetyQty / 4) * 4; // 4의 배수
+    
+    // 길이 정보 (bolt_details 우선, 없으면 원본 설명에서 추출)
+    let boltLength = '-';
+    if (boltDetails.length && boltDetails.length !== '-') {
+      boltLength = boltDetails.length;
+    } else {
+      // 원본 설명에서 길이 추출
+      const description = material.original_description || '';
+      const lengthPatterns = [
+        /(\d+(?:\.\d+)?)\s*LG/i,  // 75 LG, 90.0000 LG
+        /(\d+(?:\.\d+)?)\s*mm/i,  // 50mm
+        /(\d+(?:\.\d+)?)\s*MM/i,  // 50MM
+        /LG[,\s]*(\d+(?:\.\d+)?)/i // LG, 75 형태
+      ];
+      
+      for (const pattern of lengthPatterns) {
+        const match = description.match(pattern);
+        if (match) {
+          let lengthValue = match[1];
+          // 소수점 제거 (145.0000 → 145)
+          if (lengthValue.includes('.') && lengthValue.endsWith('.0000')) {
+            lengthValue = lengthValue.split('.')[0];
+          } else if (lengthValue.includes('.') && /\.0+$/.test(lengthValue)) {
+            lengthValue = lengthValue.split('.')[0];
+          }
+          boltLength = `${lengthValue}mm`;
+          break;
+        }
+      }
+    }
+    
+    // 재질 정보 (bolt_details 우선, 없으면 기본 필드 사용)
+    let boltGrade = '-';
+    if (boltDetails.material_standard && boltDetails.material_grade) {
+      // bolt_details에서 완전한 재질 정보 구성
+      if (boltDetails.material_grade !== 'UNKNOWN' && boltDetails.material_grade !== 'UNCLASSIFIED' && boltDetails.material_grade !== boltDetails.material_standard) {
+        boltGrade = `${boltDetails.material_standard} ${boltDetails.material_grade}`;
+      } else {
+        boltGrade = boltDetails.material_standard;
+      }
+    } else if (material.full_material_grade && material.full_material_grade !== '-') {
+      boltGrade = material.full_material_grade;
+    } else if (material.material_grade && material.material_grade !== '-') {
+      boltGrade = material.material_grade;
+    }
+    
+    // 볼트 타입 (PSV_BOLT, LT_BOLT 등)
+    let boltSubtype = 'BOLT_GENERAL';
+    if (boltDetails.bolt_type && boltDetails.bolt_type !== 'UNKNOWN' && boltDetails.bolt_type !== 'UNCLASSIFIED') {
+      boltSubtype = boltDetails.bolt_type;
+    } else {
+      // 원본 설명에서 특수 볼트 타입 추출
+      const description = material.original_description || '';
+      const upperDesc = description.toUpperCase();
+      if (upperDesc.includes('PSV')) {
+        boltSubtype = 'PSV_BOLT';
+      } else if (upperDesc.includes('LT')) {
+        boltSubtype = 'LT_BOLT';
+      } else if (upperDesc.includes('CK')) {
+        boltSubtype = 'CK_BOLT';
+      }
+    }
+    
+    // 압력 등급 추출 (150LB 등)
+    let boltPressure = '-';
+    const description = material.original_description || '';
+    const pressureMatch = description.match(/(\d+)\s*LB/i);
+    if (pressureMatch) {
+      boltPressure = `${pressureMatch[1]}LB`;
+    }
+    
+    // User Requirements 추출 (ELEC.GALV 등)
+    const userRequirements = extractBoltAdditionalRequirements(material.original_description || '');
+    
+    // Purchase Quantity (Quantity + Unit 통합) - 플랜지당 볼트 세트 수 정보 포함
+    const purchaseQuantity = boltsPerFlange > 1 
+      ? `${purchaseQty} SETS (${boltsPerFlange}/flange)`
+      : `${purchaseQty} SETS`;
+    
+    return {
+      type: 'BOLT',
+      subtype: boltSubtype,
+      size: material.size_spec || material.main_nom || '-',
+      pressure: boltPressure, // 압력 등급 (150LB 등)
+      schedule: boltLength, // 길이 정보
+      grade: boltGrade,
+      userRequirements: userRequirements, // User Requirements (ELEC.GALV 등)
+      additionalReq: '-', // 추가요구사항 (사용자 입력)
+      purchaseQuantity: purchaseQuantity // 구매수량 (통합)
+    };
+  };
+
+  // 정렬 처리
+  const handleSort = (key) => {
+    let direction = 'asc';
+    if (sortConfig.key === key && sortConfig.direction === 'asc') {
+      direction = 'desc';
+    }
+    setSortConfig({ key, direction });
+  };
+
+  // 필터링된 및 정렬된 자재 목록
+  const getFilteredAndSortedMaterials = () => {
+    let filtered = materials.filter(material => {
+      return Object.entries(columnFilters).every(([key, filterValue]) => {
+        if (!filterValue) return true;
+        const info = parseBoltInfo(material);
+        const value = info[key]?.toString().toLowerCase() || '';
+        return value.includes(filterValue.toLowerCase());
+      });
+    });
+
+    if (sortConfig && sortConfig.key) {
+      filtered.sort((a, b) => {
+        const aInfo = parseBoltInfo(a);
+        const bInfo = parseBoltInfo(b);
+        
+        if (!aInfo || !bInfo) return 0;
+        
+        const aValue = aInfo[sortConfig.key];
+        const bValue = bInfo[sortConfig.key];
+        
+        // 값이 없는 경우 처리
+        if (aValue === undefined && bValue === undefined) return 0;
+        if (aValue === undefined) return 1;
+        if (bValue === undefined) return -1;
+        
+        // 숫자인 경우 숫자로 비교
+        if (typeof aValue === 'number' && typeof bValue === 'number') {
+          return sortConfig.direction === 'asc' ? aValue - bValue : bValue - aValue;
+        }
+        
+        // 문자열로 비교
+        const aStr = String(aValue).toLowerCase();
+        const bStr = String(bValue).toLowerCase();
+        
+        if (sortConfig.direction === 'asc') {
+          return aStr.localeCompare(bStr);
+        } else {
+          return bStr.localeCompare(aStr);
+        }
+      });
+    }
+
+    return filtered;
+  };
+
+  // 전체 선택/해제 (구매신청된 자재 제외)
+  const handleSelectAll = () => {
+    const filteredMaterials = getFilteredAndSortedMaterials();
+    const selectableMaterials = filteredMaterials.filter(m => !purchasedMaterials.has(m.id));
+    
+    if (selectedMaterials.size === selectableMaterials.length) {
+      setSelectedMaterials(new Set());
+    } else {
+      setSelectedMaterials(new Set(selectableMaterials.map(m => m.id)));
+    }
+  };
+
+  // 개별 선택 (구매신청된 자재는 선택 불가)
+  const handleMaterialSelect = (materialId) => {
+    if (purchasedMaterials.has(materialId)) {
+      return; // 구매신청된 자재는 선택 불가
+    }
+    
+    const newSelected = new Set(selectedMaterials);
+    if (newSelected.has(materialId)) {
+      newSelected.delete(materialId);
+    } else {
+      newSelected.add(materialId);
+    }
+    setSelectedMaterials(newSelected);
+  };
+
+  // 엑셀 내보내기
+  const handleExportToExcel = async () => {
+    const selectedMaterialsData = materials.filter(m => selectedMaterials.has(m.id));
+    if (selectedMaterialsData.length === 0) {
+      alert('내보낼 자재를 선택해주세요.');
+      return;
+    }
+
+    const timestamp = new Date().toISOString().slice(0, 19).replace(/:/g, '-');
+    const excelFileName = `BOLT_Materials_${timestamp}.xlsx`;
+
+    const dataWithRequirements = selectedMaterialsData.map(material => ({
+      ...material,
+      user_requirement: savedRequests[material.id] || userRequirements[material.id] || ''
+    }));
+
+    try {
+      console.log('🔄 볼트 엑셀 내보내기 시작 - 새로운 방식');
+      
+      // 1. 먼저 클라이언트에서 엑셀 파일 생성
+      console.log('📊 엑셀 Blob 생성 중...', dataWithRequirements.length, '개 자료');
+      const excelBlob = await createExcelBlob(dataWithRequirements, excelFileName, {
+        category: 'BOLT',
+        filename: excelFileName,
+        uploadDate: new Date().toLocaleDateString()
+      });
+      console.log('✅ 엑셀 Blob 생성 완료:', excelBlob.size, 'bytes');
+
+      // 2. 구매신청 생성
+      const allMaterialIds = selectedMaterialsData.map(m => m.id);
+      const response = await api.post('/purchase-request/create', {
+        file_id: fileId,
+        job_no: jobNo,
+        category: 'BOLT',
+        material_ids: allMaterialIds,
+        materials_data: dataWithRequirements.map(m => ({
+          material_id: m.id,
+          description: m.original_description,
+          category: m.classified_category,
+          size: m.size_inch || m.size_spec,
+          schedule: m.schedule,
+          material_grade: m.material_grade || m.full_material_grade,
+          quantity: m.quantity,
+          unit: m.unit,
+          user_requirement: userRequirements[m.id] || ''
+        }))
+      });
+
+      if (response.data.success) {
+        console.log(`✅ 구매신청 완료: ${response.data.request_no}, request_id: ${response.data.request_id}`);
+        
+        // 3. 엑셀 파일을 서버에 업로드
+        const formData = new FormData();
+        formData.append('excel_file', excelBlob, excelFileName);
+        formData.append('request_id', response.data.request_id);
+        formData.append('category', 'BOLT');
+        
+        console.log('📤 엑셀 파일 서버 업로드 중...');
+        await api.post('/purchase-request/upload-excel', formData, {
+          headers: { 'Content-Type': 'multipart/form-data' }
+        });
+        console.log('✅ 엑셀 파일 서버 업로드 완료');
+
+        // 4. 구매된 자재 목록 업데이트 (비활성화)
+        onPurchasedMaterialsUpdate(allMaterialIds);
+        console.log('✅ 구매된 자재 목록 업데이트 완료');
+
+        // 5. 클라이언트에 파일 다운로드
+        const url = window.URL.createObjectURL(excelBlob);
+        const link = document.createElement('a');
+        link.href = url;
+        link.download = excelFileName;
+        document.body.appendChild(link);
+        link.click();
+        document.body.removeChild(link);
+        window.URL.revokeObjectURL(url);
+
+        alert(`구매신청 ${response.data?.request_no || ''}이 생성되고 엑셀 파일이 저장되었습니다.`);
+      } else {
+        throw new Error(response.data?.message || '구매신청 생성 실패');
+      }
+    } catch (error) {
+      console.error('엑셀 저장 또는 구매신청 실패:', error);
+      // 실패 시에도 클라이언트 다운로드는 진행
+      exportMaterialsToExcel(dataWithRequirements, excelFileName, {
+        category: 'BOLT',
+        filename: excelFileName,
+        uploadDate: new Date().toLocaleDateString()
+      });
+      alert('엑셀 파일은 다운로드되었지만 구매신청 생성에 실패했습니다.');
+    }
+
+    // 선택 해제
+    setSelectedMaterials(new Set());
+  };
+
+  const filteredMaterials = getFilteredAndSortedMaterials();
+
+  return (
+    <div style={{ padding: '32px' }}>
+      {/* 헤더 */}
+      <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: '24px' }}>
+        <div>
+          <h3 style={{ 
+            fontSize: '24px', 
+            fontWeight: '700', 
+            color: '#0f172a', 
+            margin: '0 0 8px 0' 
+          }}>
+            Bolt Materials
+          </h3>
+          <p style={{ 
+            fontSize: '14px', 
+            color: '#64748b', 
+            margin: 0 
+          }}>
+            {filteredMaterials.length} items • {selectedMaterials.size} selected
+          </p>
+        </div>
+        
+        <div style={{ display: 'flex', gap: '12px' }}>
+          <button
+            onClick={handleSelectAll}
+            style={{
+              background: 'white',
+              color: '#6b7280',
+              border: '1px solid #d1d5db',
+              borderRadius: '8px',
+              padding: '10px 16px',
+              cursor: 'pointer',
+              fontSize: '14px',
+              fontWeight: '500'
+            }}
+          >
+            {selectedMaterials.size === filteredMaterials.length ? 'Deselect All' : 'Select All'}
+          </button>
+          
+          <button
+            onClick={handleExportToExcel}
+            disabled={selectedMaterials.size === 0}
+            style={{
+              background: selectedMaterials.size > 0 ? 'linear-gradient(135deg, #6b7280 0%, #4b5563 100%)' : '#e5e7eb',
+              color: selectedMaterials.size > 0 ? 'white' : '#9ca3af',
+              border: 'none',
+              borderRadius: '8px',
+              padding: '10px 16px',
+              cursor: selectedMaterials.size > 0 ? 'pointer' : 'not-allowed',
+              fontSize: '14px',
+              fontWeight: '500'
+            }}
+          >
+            Export to Excel ({selectedMaterials.size})
+          </button>
+        </div>
+      </div>
+
+      {/* 테이블 */}
+      <div style={{ 
+        background: 'white', 
+        borderRadius: '12px', 
+        overflow: 'auto',
+        maxHeight: '600px',
+        boxShadow: '0 1px 3px rgba(0, 0, 0, 0.1)'
+      }}>
+        <div style={{ minWidth: '1500px' }}>
+          {/* 헤더 */}
+          <div style={{
+            display: 'grid',
+            gridTemplateColumns: '50px 200px 120px 100px 120px 150px 180px 200px 200px',
+            gap: '16px',
+            padding: '16px',
+            background: '#f8fafc',
+            borderBottom: '1px solid #e2e8f0',
+            fontSize: '14px',
+            fontWeight: '600',
+            color: '#374151',
+            textAlign: 'center'
+          }}>
+          <div>
+            <input
+              type="checkbox"
+              checked={(() => {
+                const selectableMaterials = filteredMaterials.filter(m => !purchasedMaterials.has(m.id));
+                return selectedMaterials.size === selectableMaterials.length && selectableMaterials.length > 0;
+              })()}
+              onChange={handleSelectAll}
+              style={{ cursor: 'pointer' }}
+            />
+          </div>
+          <FilterableHeader 
+            sortKey="subtype" 
+            filterKey="subtype"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Type
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="size" 
+            filterKey="size"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Size
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="pressure" 
+            filterKey="pressure"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Pressure
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="schedule" 
+            filterKey="schedule"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Length
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="grade" 
+            filterKey="grade"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Material Grade
+          </FilterableHeader>
+          <div>User Requirements</div>
+          <div>Additional Request</div>
+          <FilterableHeader 
+            sortKey="purchaseQuantity" 
+            filterKey="purchaseQuantity"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Purchase Quantity
+          </FilterableHeader>
+          </div>
+
+          {/* 데이터 행들 */}
+          {filteredMaterials.map((material, index) => {
+            const info = parseBoltInfo(material);
+            const isSelected = selectedMaterials.has(material.id);
+            const isPurchased = purchasedMaterials.has(material.id);
+            
+            return (
+              <div
+                key={material.id}
+                style={{
+                  display: 'grid',
+                  gridTemplateColumns: '50px 200px 120px 100px 120px 150px 180px 200px 200px',
+                  gap: '16px',
+                  padding: '16px',
+                  borderBottom: index < filteredMaterials.length - 1 ? '1px solid #f1f5f9' : 'none',
+                  background: isSelected ? '#eff6ff' : (isPurchased ? '#fef3c7' : 'white'),
+                  transition: 'background 0.15s ease'
+                }}
+                onMouseEnter={(e) => {
+                  if (!isSelected && !isPurchased) {
+                    e.target.style.background = '#f8fafc';
+                  }
+                }}
+                onMouseLeave={(e) => {
+                  if (!isSelected && !isPurchased) {
+                    e.target.style.background = 'white';
+                  }
+                }}
+              >
+                <div>
+                  <input
+                    type="checkbox"
+                    checked={isSelected}
+                    onChange={() => handleMaterialSelect(material.id)}
+                    disabled={isPurchased}
+                    style={{ 
+                      cursor: isPurchased ? 'not-allowed' : 'pointer',
+                      opacity: isPurchased ? 0.5 : 1
+                    }}
+                  />
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', fontWeight: '500' }}>
+                  {info.subtype}
+                  {isPurchased && (
+                    <span style={{
+                      marginLeft: '8px',
+                      padding: '2px 6px',
+                      background: '#fbbf24',
+                      color: '#92400e',
+                      borderRadius: '4px',
+                      fontSize: '10px',
+                      fontWeight: '500'
+                    }}>
+                      PURCHASED
+                    </span>
+                  )}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', textAlign: 'center' }}>
+                  {info.size}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', textAlign: 'center' }}>
+                  {info.pressure}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', textAlign: 'center' }}>
+                  {info.schedule}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', textAlign: 'center' }}>
+                  {info.grade}
+                </div>
+                <div style={{ 
+                  fontSize: '14px', 
+                  color: '#1f2937', 
+                  textAlign: 'center'
+                }}>
+                  {info.userRequirements}
+                </div>
+                <div style={{ display: 'flex', gap: '4px', alignItems: 'center' }}>
+                  {!editingRequest[material.id] && savedRequests[material.id] ? (
+                    // 저장된 상태 - 요구사항 표시 + 수정 버튼
+                    <>
+                      <div style={{
+                        flex: 1,
+                        padding: '6px 8px',
+                        border: '1px solid #e5e7eb',
+                        borderRadius: '4px',
+                        fontSize: '12px',
+                        textAlign: 'center',
+                        background: '#f9fafb',
+                        color: '#374151'
+                      }}>
+                        {savedRequests[material.id]}
+                      </div>
+                      <button
+                        onClick={() => handleEditRequest(material.id, savedRequests[material.id])}
+                        disabled={isPurchased}
+                        style={{
+                          padding: '6px 8px',
+                          border: 'none',
+                          borderRadius: '4px',
+                          background: isPurchased ? '#d1d5db' : '#f59e0b',
+                          color: 'white',
+                          fontSize: '10px',
+                          cursor: isPurchased ? 'not-allowed' : 'pointer',
+                          opacity: isPurchased ? 0.5 : 1,
+                          minWidth: '40px'
+                        }}
+                      >
+                        Edit
+                      </button>
+                    </>
+                  ) : (
+                    // 편집 상태 - 입력 필드 + 저장 버튼
+                    <>
+                      <input
+                        type="text"
+                        value={userRequirements[material.id] || ''}
+                        onChange={(e) => setUserRequirements({
+                          ...userRequirements,
+                          [material.id]: e.target.value
+                        })}
+                        placeholder="Enter additional request..."
+                        disabled={isPurchased}
+                        style={{
+                          flex: 1,
+                          padding: '6px 8px',
+                          border: '1px solid #d1d5db',
+                          borderRadius: '4px',
+                          fontSize: '12px',
+                          opacity: isPurchased ? 0.5 : 1,
+                          cursor: isPurchased ? 'not-allowed' : 'text'
+                        }}
+                      />
+                      <button
+                        onClick={() => handleSaveRequest(material.id, userRequirements[material.id] || '')}
+                        disabled={isPurchased || savingRequest[material.id]}
+                        style={{
+                          padding: '6px 8px',
+                          border: 'none',
+                          borderRadius: '4px',
+                          background: isPurchased ? '#d1d5db' : '#10b981',
+                          color: 'white',
+                          fontSize: '10px',
+                          cursor: isPurchased || savingRequest[material.id] ? 'not-allowed' : 'pointer',
+                          opacity: isPurchased ? 0.5 : 1,
+                          minWidth: '40px'
+                        }}
+                      >
+                        {savingRequest[material.id] ? '...' : 'Save'}
+                      </button>
+                    </>
+                  )}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', textAlign: 'center' }}>
+                  {info.purchaseQuantity}
+                </div>
+              </div>
+            );
+          })}
+        </div>
+      </div>
+
+      {filteredMaterials.length === 0 && (
+        <div style={{
+          textAlign: 'center',
+          padding: '60px 20px',
+          color: '#64748b'
+        }}>
+          <div style={{ fontSize: '18px', fontWeight: '600', marginBottom: '8px' }}>
+            No Bolt Materials Found
+          </div>
+          <div style={{ fontSize: '14px' }}>
+            {Object.keys(columnFilters).some(key => columnFilters[key]) 
+              ? 'Try adjusting your filters' 
+              : 'No bolt materials available in this BOM'}
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default BoltMaterialsView;

frontend/src/components/bom/materials/FittingMaterialsView.jsx

@@ -0,0 +1,898 @@
+import React, { useState } from 'react';
+import { exportMaterialsToExcel, createExcelBlob } from '../../../utils/excelExport';
+import api from '../../../api';
+import { FilterableHeader, MaterialTable } from '../shared';
+
+const FittingMaterialsView = ({ 
+  materials, 
+  selectedMaterials, 
+  setSelectedMaterials,
+  userRequirements,
+  setUserRequirements,
+  purchasedMaterials,
+  onPurchasedMaterialsUpdate,
+  updateMaterial, // 자재 업데이트 함수
+  fileId,
+  jobNo,
+  user,
+  onNavigate 
+}) => {
+  const [sortConfig, setSortConfig] = useState({ key: null, direction: 'asc' });
+  const [columnFilters, setColumnFilters] = useState({});
+  const [showFilterDropdown, setShowFilterDropdown] = useState(null);
+  const [savingRequest, setSavingRequest] = useState({}); // 추가요구사항 저장 중 상태
+  const [savedRequests, setSavedRequests] = useState({}); // 저장된 추가요구사항 상태
+  const [editingRequest, setEditingRequest] = useState({}); // 추가요구사항 편집 모드
+
+  // 컴포넌트 마운트 시 저장된 데이터 로드
+  React.useEffect(() => {
+    const loadSavedData = () => {
+      const savedRequestsData = {};
+      
+      materials.forEach(material => {
+        if (material.user_requirement && material.user_requirement.trim()) {
+          savedRequestsData[material.id] = material.user_requirement.trim();
+        }
+      });
+      
+      setSavedRequests(savedRequestsData);
+    };
+
+    if (materials && materials.length > 0) {
+      loadSavedData();
+    } else {
+      setSavedRequests({});
+    }
+  }, [materials]);
+
+  // 추가요구사항 저장 함수
+  const handleSaveRequest = async (materialId, request) => {
+    setSavingRequest(prev => ({ ...prev, [materialId]: true }));
+    try {
+      await api.patch(`/materials/${materialId}/user-requirement`, { 
+        user_requirement: request.trim() 
+      });
+      setSavedRequests(prev => ({ ...prev, [materialId]: request.trim() }));
+      setEditingRequest(prev => ({ ...prev, [materialId]: false }));
+      setUserRequirements(prev => ({ ...prev, [materialId]: '' }));
+      
+      if (updateMaterial) {
+        updateMaterial(materialId, { user_requirement: request.trim() });
+      }
+    } catch (error) {
+      console.error('추가요구사항 저장 실패:', error);
+      alert('추가요구사항 저장에 실패했습니다.');
+    } finally {
+      setSavingRequest(prev => ({ ...prev, [materialId]: false }));
+    }
+  };
+
+  // 추가요구사항 편집 시작
+  const handleEditRequest = (materialId, currentRequest) => {
+    setEditingRequest(prev => ({ ...prev, [materialId]: true }));
+    setUserRequirements(prev => ({ ...prev, [materialId]: currentRequest || '' }));
+  };
+
+  // 니플 끝단 정보 추출 (기존 로직 복원)
+  const extractNippleEndInfo = (description) => {
+    const descUpper = description.toUpperCase();
+    
+    // 니플 끝단 패턴들 (기존 NewMaterialsPage와 동일)
+    const endPatterns = {
+      'PBE': 'PBE',      // Plain Both End
+      'BBE': 'BBE',      // Bevel Both End  
+      'POE': 'POE',      // Plain One End
+      'BOE': 'BOE',      // Bevel One End
+      'TOE': 'TOE',      // Thread One End
+      'SW X NPT': 'SW×NPT',  // Socket Weld x NPT
+      'SW X SW': 'SW×SW',    // Socket Weld x Socket Weld
+      'NPT X NPT': 'NPT×NPT', // NPT x NPT
+      'BOTH END THREADED': 'B.E.T',
+      'B.E.T': 'B.E.T',
+      'ONE END THREADED': 'O.E.T',
+      'O.E.T': 'O.E.T',
+      'THREADED': 'THD'
+    };
+    
+    for (const [pattern, display] of Object.entries(endPatterns)) {
+      if (descUpper.includes(pattern)) {
+        return display;
+      }
+    }
+    
+    return '';
+  };
+
+  // 피팅 정보 파싱 (기존 상세 로직 복원)
+  const parseFittingInfo = (material) => {
+    const fittingDetails = material.fitting_details || {};
+    const classificationDetails = material.classification_details || {};
+    
+    // 개선된 분류기 결과 우선 사용
+    const fittingTypeInfo = classificationDetails.fitting_type || {};
+    const scheduleInfo = classificationDetails.schedule_info || {};
+    
+    // 기존 필드와 새 필드 통합
+    const fittingType = fittingTypeInfo.type || fittingDetails.fitting_type || '';
+    const fittingSubtype = fittingTypeInfo.subtype || fittingDetails.fitting_subtype || '';
+    const mainSchedule = scheduleInfo.main_schedule || fittingDetails.schedule || '';
+    const redSchedule = scheduleInfo.red_schedule || '';
+    const hasDifferentSchedules = scheduleInfo.has_different_schedules || false;
+    
+    const description = material.original_description || '';
+    
+    // 피팅 타입별 상세 표시
+    let displayType = '';
+    
+    // 개선된 분류기 결과 우선 표시
+    if (fittingType === 'TEE' && fittingSubtype === 'REDUCING') {
+      displayType = 'TEE REDUCING';
+    } else if (fittingType === 'REDUCER' && fittingSubtype === 'CONCENTRIC') {
+      displayType = 'REDUCER CONC';
+    } else if (fittingType === 'REDUCER' && fittingSubtype === 'ECCENTRIC') {
+      displayType = 'REDUCER ECC';
+    } else if (description.toUpperCase().includes('TEE RED')) {
+      displayType = 'TEE REDUCING';
+    } else if (description.toUpperCase().includes('RED CONC')) {
+      displayType = 'REDUCER CONC';
+    } else if (description.toUpperCase().includes('RED ECC')) {
+      displayType = 'REDUCER ECC';
+    } else if (description.toUpperCase().includes('CAP')) {
+      if (description.includes('NPT(F)')) {
+        displayType = 'CAP NPT(F)';
+      } else if (description.includes('SW')) {
+        displayType = 'CAP SW';
+      } else if (description.includes('BW')) {
+        displayType = 'CAP BW';
+      } else {
+        displayType = 'CAP';
+      }
+    } else if (description.toUpperCase().includes('PLUG')) {
+      if (description.toUpperCase().includes('HEX')) {
+        if (description.includes('NPT(M)')) {
+          displayType = 'HEX PLUG NPT(M)';
+        } else {
+          displayType = 'HEX PLUG';
+        }
+      } else if (description.includes('NPT(M)')) {
+        displayType = 'PLUG NPT(M)';
+      } else if (description.includes('NPT')) {
+        displayType = 'PLUG NPT';
+      } else {
+        displayType = 'PLUG';
+      }
+    } else if (fittingType === 'NIPPLE') {
+      const length = fittingDetails.length_mm || fittingDetails.avg_length_mm;
+      const endInfo = extractNippleEndInfo(description);
+      
+      let nippleType = 'NIPPLE';
+      if (length) nippleType += ` ${length}mm`;
+      if (endInfo) nippleType += ` ${endInfo}`;
+      
+      displayType = nippleType;
+    } else if (fittingType === 'ELBOW') {
+      let elbowDetails = [];
+      
+      // 각도 정보 추출
+      if (fittingSubtype.includes('90DEG') || description.includes('90') || description.includes('90°')) {
+        elbowDetails.push('90°');
+      } else if (fittingSubtype.includes('45DEG') || description.includes('45') || description.includes('45°')) {
+        elbowDetails.push('45°');
+      }
+      
+      // 반경 정보 추출 (Long Radius / Short Radius)
+      if (fittingSubtype.includes('LONG_RADIUS') || description.toUpperCase().includes('LR') || description.toUpperCase().includes('LONG RADIUS')) {
+        elbowDetails.push('LR');
+      } else if (fittingSubtype.includes('SHORT_RADIUS') || description.toUpperCase().includes('SR') || description.toUpperCase().includes('SHORT RADIUS')) {
+        elbowDetails.push('SR');
+      }
+      
+      // 연결 방식
+      if (description.includes('SW')) {
+        elbowDetails.push('SW');
+      } else if (description.includes('BW')) {
+        elbowDetails.push('BW');
+      }
+      
+      // 기본값 설정 (각도가 없으면 90도로 가정)
+      if (!elbowDetails.some(detail => detail.includes('°'))) {
+        elbowDetails.unshift('90°');
+      }
+      
+      displayType = `ELBOW ${elbowDetails.join(' ')}`.trim();
+    } else if (fittingType === 'TEE') {
+      // TEE 타입과 연결 방식 상세 표시
+      let teeDetails = [];
+      
+      // 등경/축소 타입
+      if (fittingSubtype === 'EQUAL' || description.toUpperCase().includes('TEE EQ')) {
+        teeDetails.push('EQ');
+      } else if (fittingSubtype === 'REDUCING' || description.toUpperCase().includes('TEE RED')) {
+        teeDetails.push('RED');
+      }
+      
+      // 연결 방식
+      if (description.includes('SW')) {
+        teeDetails.push('SW');
+      } else if (description.includes('BW')) {
+        teeDetails.push('BW');
+      }
+      
+      displayType = `TEE ${teeDetails.join(' ')}`.trim();
+    } else if (fittingType === 'REDUCER') {
+      const reducerType = fittingSubtype === 'CONCENTRIC' ? 'CONC' : fittingSubtype === 'ECCENTRIC' ? 'ECC' : '';
+      const sizes = fittingDetails.reduced_size ? `${material.size_spec}×${fittingDetails.reduced_size}` : material.size_spec;
+      displayType = `RED ${reducerType} ${sizes}`.trim();
+    } else if (fittingType === 'SWAGE') {
+      const swageType = fittingSubtype || '';
+      displayType = `SWAGE ${swageType}`.trim();
+    } else if (fittingType === 'OLET') {
+      const oletSubtype = fittingSubtype || '';
+      let oletDisplayName = '';
+      
+      // 백엔드 분류기 결과 우선 사용
+      switch (oletSubtype) {
+        case 'SOCKOLET':
+          oletDisplayName = 'SOCK-O-LET';
+          break;
+        case 'WELDOLET':
+          oletDisplayName = 'WELD-O-LET';
+          break;
+        case 'ELLOLET':
+          oletDisplayName = 'ELL-O-LET';
+          break;
+        case 'THREADOLET':
+          oletDisplayName = 'THREAD-O-LET';
+          break;
+        case 'ELBOLET':
+          oletDisplayName = 'ELB-O-LET';
+          break;
+        case 'NIPOLET':
+          oletDisplayName = 'NIP-O-LET';
+          break;
+        case 'COUPOLET':
+          oletDisplayName = 'COUP-O-LET';
+          break;
+        default:
+          // 백엔드 분류가 없으면 description에서 직접 추출
+          const upperDesc = description.toUpperCase();
+          if (upperDesc.includes('SOCK-O-LET') || upperDesc.includes('SOCKOLET')) {
+            oletDisplayName = 'SOCK-O-LET';
+          } else if (upperDesc.includes('WELD-O-LET') || upperDesc.includes('WELDOLET')) {
+            oletDisplayName = 'WELD-O-LET';
+          } else if (upperDesc.includes('ELL-O-LET') || upperDesc.includes('ELLOLET')) {
+            oletDisplayName = 'ELL-O-LET';
+          } else if (upperDesc.includes('THREAD-O-LET') || upperDesc.includes('THREADOLET')) {
+            oletDisplayName = 'THREAD-O-LET';
+          } else if (upperDesc.includes('ELB-O-LET') || upperDesc.includes('ELBOLET')) {
+            oletDisplayName = 'ELB-O-LET';
+          } else if (upperDesc.includes('NIP-O-LET') || upperDesc.includes('NIPOLET')) {
+            oletDisplayName = 'NIP-O-LET';
+          } else if (upperDesc.includes('COUP-O-LET') || upperDesc.includes('COUPOLET')) {
+            oletDisplayName = 'COUP-O-LET';
+          } else {
+            oletDisplayName = 'OLET';
+          }
+      }
+      
+      displayType = oletDisplayName;
+    } else if (!displayType) {
+      displayType = fittingType || 'FITTING';
+    }
+    
+    // 압력 등급과 스케줄 추출 (기존 NewMaterialsPage 로직)
+    let pressure = '-';
+    let schedule = '-';
+    
+    // 압력 등급 찾기 (3000LB, 6000LB 등) - 소켓웰드 피팅에 특히 중요
+    const pressureMatch = description.match(/(\d+)LB/i);
+    if (pressureMatch) {
+      pressure = `${pressureMatch[1]}LB`;
+    }
+    
+    // 소켓웰드 피팅의 경우 압력 등급이 더 중요함
+    if (description.includes('SW') && !pressureMatch) {
+      // SW 피팅인데 압력이 명시되지 않은 경우 기본값 설정
+      if (description.includes('3000') || description.includes('3K')) {
+        pressure = '3000LB';
+      } else if (description.includes('6000') || description.includes('6K')) {
+        pressure = '6000LB';
+      }
+    }
+    
+    // 스케줄 표시 (분리 스케줄 지원) - 개선된 로직
+    // 레듀싱 자재인지 확인
+    const isReducingFitting = displayType.includes('REDUCING') || displayType.includes('RED') || 
+                             description.toUpperCase().includes('RED') || 
+                             description.toUpperCase().includes('REDUCING');
+    
+    if (hasDifferentSchedules && mainSchedule && redSchedule) {
+      schedule = `${mainSchedule}×${redSchedule}`;
+    } else if (isReducingFitting && mainSchedule && mainSchedule !== 'UNKNOWN' && mainSchedule !== 'UNCLASSIFIED') {
+      // 레듀싱 자재는 같은 스케줄이라도 명시적으로 표시
+      schedule = `${mainSchedule}×${mainSchedule}`;
+    } else if (mainSchedule && mainSchedule !== 'UNKNOWN' && mainSchedule !== 'UNCLASSIFIED') {
+      schedule = mainSchedule;
+    } else {
+      // Description에서 스케줄 추출 - 더 강력한 패턴 매칭
+      const schedulePatterns = [
+        /SCH\s*(\d+S?)/i,                    // SCH 40, SCH 80S
+        /SCHEDULE\s*(\d+S?)/i,               // SCHEDULE 40
+        /스케줄\s*(\d+S?)/i,                  // 스케줄 40
+        /(\d+S?)\s*SCH/i,                    // 40 SCH (역순)
+        /SCH\.?\s*(\d+S?)/i,                 // SCH.40
+        /SCH\s*(\d+S?)\s*[xX×]\s*SCH\s*(\d+S?)/i  // SCH 40 x SCH 80
+      ];
+      
+      for (const pattern of schedulePatterns) {
+        const match = description.match(pattern);
+        if (match) {
+          if (match.length > 2) {
+            // 분리 스케줄 패턴 (SCH 40 x SCH 80)
+            schedule = `SCH ${match[1]}×SCH ${match[2]}`;
+          } else {
+            const scheduleNum = match[1];
+            if (isReducingFitting) {
+              // 레듀싱 자재는 같은 스케줄이라도 명시적으로 표시
+              schedule = `SCH ${scheduleNum}×SCH ${scheduleNum}`;
+            } else {
+              schedule = `SCH ${scheduleNum}`;
+            }
+          }
+          break;
+        }
+      }
+      
+      // 여전히 찾지 못했다면 더 넓은 패턴 시도
+      if (schedule === '-') {
+        const broadPatterns = [
+          /\b(\d+)\s*LB/i,                   // 압력 등급에서 유추
+          /\b(40|80|120|160)\b/i,            // 일반적인 스케줄 숫자
+          /\b(10|20|30|40|60|80|100|120|140|160)\b/i  // 모든 표준 스케줄
+        ];
+        
+        for (const pattern of broadPatterns) {
+          const match = description.match(pattern);
+          if (match) {
+            const num = match[1];
+            // 압력 등급이 아닌 경우만 스케줄로 간주
+            if (!description.includes(`${num}LB`)) {
+              if (isReducingFitting) {
+                // 레듀싱 자재는 같은 스케줄이라도 명시적으로 표시
+                schedule = `SCH ${num}×SCH ${num}`;
+              } else {
+                schedule = `SCH ${num}`;
+              }
+              break;
+            }
+          }
+        }
+      }
+    }
+    
+    return {
+      type: 'FITTING',
+      subtype: displayType,
+      size: material.size_spec || '-',
+      pressure: pressure,
+      schedule: schedule,
+      grade: material.full_material_grade || material.material_grade || '-',
+      quantity: Math.round(material.quantity || 0),
+      unit: '개',
+      isFitting: true
+    };
+  };
+
+  // 정렬 처리
+  const handleSort = (key) => {
+    let direction = 'asc';
+    if (sortConfig.key === key && sortConfig.direction === 'asc') {
+      direction = 'desc';
+    }
+    setSortConfig({ key, direction });
+  };
+
+  // 필터링된 및 정렬된 자재 목록
+  const getFilteredAndSortedMaterials = () => {
+    let filtered = materials.filter(material => {
+      return Object.entries(columnFilters).every(([key, filterValue]) => {
+        if (!filterValue) return true;
+        const info = parseFittingInfo(material);
+        const value = info[key]?.toString().toLowerCase() || '';
+        return value.includes(filterValue.toLowerCase());
+      });
+    });
+
+    if (sortConfig.key) {
+      filtered.sort((a, b) => {
+        const aInfo = parseFittingInfo(a);
+        const bInfo = parseFittingInfo(b);
+        const aValue = aInfo[sortConfig.key] || '';
+        const bValue = bInfo[sortConfig.key] || '';
+        
+        if (sortConfig.direction === 'asc') {
+          return aValue > bValue ? 1 : -1;
+        } else {
+          return aValue < bValue ? 1 : -1;
+        }
+      });
+    }
+
+    return filtered;
+  };
+
+  // 전체 선택/해제 (구매신청된 자재 제외)
+  const handleSelectAll = () => {
+    const filteredMaterials = getFilteredAndSortedMaterials();
+    const selectableMaterials = filteredMaterials.filter(m => !purchasedMaterials.has(m.id));
+    
+    if (selectedMaterials.size === selectableMaterials.length) {
+      setSelectedMaterials(new Set());
+    } else {
+      setSelectedMaterials(new Set(selectableMaterials.map(m => m.id)));
+    }
+  };
+
+  // 개별 선택 (구매신청된 자재는 선택 불가)
+  const handleMaterialSelect = (materialId) => {
+    if (purchasedMaterials.has(materialId)) {
+      return; // 구매신청된 자재는 선택 불가
+    }
+    
+    const newSelected = new Set(selectedMaterials);
+    if (newSelected.has(materialId)) {
+      newSelected.delete(materialId);
+    } else {
+      newSelected.add(materialId);
+    }
+    setSelectedMaterials(newSelected);
+  };
+
+  // 엑셀 내보내기
+  const handleExportToExcel = async () => {
+    const selectedMaterialsData = materials.filter(m => selectedMaterials.has(m.id));
+    if (selectedMaterialsData.length === 0) {
+      alert('내보낼 자재를 선택해주세요.');
+      return;
+    }
+
+    const timestamp = new Date().toISOString().slice(0, 19).replace(/:/g, '-');
+    const excelFileName = `FITTING_Materials_${timestamp}.xlsx`;
+
+    const dataWithRequirements = selectedMaterialsData.map(material => ({
+      ...material,
+      user_requirement: savedRequests[material.id] || userRequirements[material.id] || ''
+    }));
+
+    try {
+      console.log('🔄 피팅 엑셀 내보내기 시작 - 새로운 방식');
+      
+      // 1. 먼저 클라이언트에서 엑셀 파일 생성
+      console.log('📊 엑셀 Blob 생성 중...', dataWithRequirements.length, '개 자료');
+      const excelBlob = await createExcelBlob(dataWithRequirements, excelFileName, {
+        category: 'FITTING',
+        filename: excelFileName,
+        uploadDate: new Date().toLocaleDateString()
+      });
+      console.log('✅ 엑셀 Blob 생성 완료:', excelBlob.size, 'bytes');
+
+      // 2. 구매신청 생성
+      const allMaterialIds = selectedMaterialsData.map(m => m.id);
+      const response = await api.post('/purchase-request/create', {
+        file_id: fileId,
+        job_no: jobNo,
+        category: 'FITTING',
+        material_ids: allMaterialIds,
+        materials_data: dataWithRequirements.map(m => ({
+          material_id: m.id,
+          description: m.original_description,
+          category: m.classified_category,
+          size: m.size_inch || m.size_spec,
+          schedule: m.schedule,
+          material_grade: m.material_grade || m.full_material_grade,
+          quantity: m.quantity,
+          unit: m.unit,
+          user_requirement: userRequirements[m.id] || ''
+        }))
+      });
+
+      if (response.data.success) {
+        console.log(`✅ 구매신청 완료: ${response.data.request_no}, request_id: ${response.data.request_id}`);
+        
+        // 3. 생성된 엑셀 파일을 서버에 업로드
+        console.log('📤 서버에 엑셀 파일 업로드 중...');
+        const formData = new FormData();
+        formData.append('excel_file', excelBlob, excelFileName);
+        formData.append('request_id', response.data.request_id);
+        formData.append('category', 'FITTING');
+        
+        const uploadResponse = await api.post('/purchase-request/upload-excel', formData, {
+          headers: {
+            'Content-Type': 'multipart/form-data',
+          },
+        });
+        console.log('✅ 엑셀 업로드 완료:', uploadResponse.data);
+
+        if (onPurchasedMaterialsUpdate) {
+          onPurchasedMaterialsUpdate(allMaterialIds);
+        }
+      }
+
+      // 4. 클라이언트 다운로드
+      const url = window.URL.createObjectURL(excelBlob);
+      const link = document.createElement('a');
+      link.href = url;
+      link.download = excelFileName;
+      document.body.appendChild(link);
+      link.click();
+      document.body.removeChild(link);
+      window.URL.revokeObjectURL(url);
+
+      alert(`구매신청 ${response.data?.request_no || ''}이 생성되고 엑셀 파일이 저장되었습니다.`);
+    } catch (error) {
+      console.error('엑셀 저장 또는 구매신청 실패:', error);
+      // 실패 시에도 클라이언트 다운로드는 진행
+      exportMaterialsToExcel(dataWithRequirements, excelFileName, {
+        category: 'FITTING',
+        filename: excelFileName,
+        uploadDate: new Date().toLocaleDateString()
+      });
+      alert('엑셀 파일은 다운로드되었지만 구매신청 생성에 실패했습니다.');
+    }
+
+    // 선택 해제
+    setSelectedMaterials(new Set());
+  };
+
+  const filteredMaterials = getFilteredAndSortedMaterials();
+
+  // 필터 헤더 컴포넌트
+  const FilterableHeader = ({ sortKey, filterKey, children }) => (
+    <div className="filterable-header" style={{ position: 'relative' }}>
+      <div style={{ display: 'flex', alignItems: 'center', gap: '8px' }}>
+        <span
+          onClick={() => handleSort(sortKey)}
+          style={{ cursor: 'pointer', flex: 1 }}
+        >
+          {children}
+          {sortConfig.key === sortKey && (
+            <span style={{ marginLeft: '4px' }}>
+              {sortConfig.direction === 'asc' ? '↑' : '↓'}
+            </span>
+          )}
+        </span>
+        <button
+          onClick={() => setShowFilterDropdown(showFilterDropdown === filterKey ? null : filterKey)}
+          style={{
+            background: 'none',
+            border: 'none',
+            cursor: 'pointer',
+            padding: '2px',
+            fontSize: '12px',
+            color: '#6b7280'
+          }}
+        >
+          🔍
+        </button>
+      </div>
+      {showFilterDropdown === filterKey && (
+        <div style={{
+          position: 'absolute',
+          top: '100%',
+          left: 0,
+          background: 'white',
+          border: '1px solid #e2e8f0',
+          borderRadius: '6px',
+          padding: '8px',
+          boxShadow: '0 4px 6px rgba(0, 0, 0, 0.1)',
+          zIndex: 1000,
+          minWidth: '150px'
+        }}>
+          <input
+            type="text"
+            placeholder={`Filter ${children}...`}
+            value={columnFilters[filterKey] || ''}
+            onChange={(e) => setColumnFilters({
+              ...columnFilters,
+              [filterKey]: e.target.value
+            })}
+            style={{
+              width: '100%',
+              padding: '4px 8px',
+              border: '1px solid #d1d5db',
+              borderRadius: '4px',
+              fontSize: '12px'
+            }}
+            autoFocus
+          />
+        </div>
+      )}
+    </div>
+  );
+
+  return (
+    <div style={{ padding: '32px' }}>
+      {/* 헤더 */}
+      <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: '24px' }}>
+        <div>
+          <h3 style={{ 
+            fontSize: '24px', 
+            fontWeight: '700', 
+            color: '#0f172a', 
+            margin: '0 0 8px 0' 
+          }}>
+            Fitting Materials
+          </h3>
+          <p style={{ 
+            fontSize: '14px', 
+            color: '#64748b', 
+            margin: 0 
+          }}>
+            {filteredMaterials.length} items • {selectedMaterials.size} selected
+          </p>
+        </div>
+        
+        <div style={{ display: 'flex', gap: '12px' }}>
+          <button
+            onClick={handleSelectAll}
+            style={{
+              background: 'white',
+              color: '#6b7280',
+              border: '1px solid #d1d5db',
+              borderRadius: '8px',
+              padding: '10px 16px',
+              cursor: 'pointer',
+              fontSize: '14px',
+              fontWeight: '500'
+            }}
+          >
+            {selectedMaterials.size === filteredMaterials.length ? 'Deselect All' : 'Select All'}
+          </button>
+          
+          <button
+            onClick={handleExportToExcel}
+            disabled={selectedMaterials.size === 0}
+            style={{
+              background: selectedMaterials.size > 0 ? 'linear-gradient(135deg, #10b981 0%, #059669 100%)' : '#e5e7eb',
+              color: selectedMaterials.size > 0 ? 'white' : '#9ca3af',
+              border: 'none',
+              borderRadius: '8px',
+              padding: '10px 16px',
+              cursor: selectedMaterials.size > 0 ? 'pointer' : 'not-allowed',
+              fontSize: '14px',
+              fontWeight: '500'
+            }}
+          >
+            Export to Excel ({selectedMaterials.size})
+          </button>
+        </div>
+      </div>
+
+      {/* 테이블 */}
+      <div style={{ 
+        background: 'white', 
+        borderRadius: '12px', 
+        overflow: 'auto',
+        maxHeight: '600px',
+        boxShadow: '0 1px 3px rgba(0, 0, 0, 0.1)'
+      }}>
+        <div style={{ minWidth: '1380px' }}>
+          {/* 헤더 */}
+          <div style={{
+            display: 'grid',
+            gridTemplateColumns: '50px 200px 120px 100px 120px 150px 180px 120px 250px',
+            gap: '16px',
+            padding: '16px',
+            background: '#f8fafc',
+            borderBottom: '1px solid #e2e8f0',
+            fontSize: '14px',
+            fontWeight: '600',
+            color: '#374151',
+            textAlign: 'center'
+          }}>
+          <div>
+            <input
+              type="checkbox"
+              checked={(() => {
+                const selectableMaterials = filteredMaterials.filter(m => !purchasedMaterials.has(m.id));
+                return selectedMaterials.size === selectableMaterials.length && selectableMaterials.length > 0;
+              })()}
+              onChange={handleSelectAll}
+              style={{ cursor: 'pointer' }}
+            />
+          </div>
+          <div>Type</div>
+          <div>Size</div>
+          <div>Pressure</div>
+          <div>Schedule</div>
+          <div>Material Grade</div>
+          <div>User Requirements</div>
+          <div>Purchase Quantity</div>
+          <div>Additional Request</div>
+        </div>
+
+          {/* 데이터 행들 */}
+          {filteredMaterials.map((material, index) => {
+            const info = parseFittingInfo(material);
+            const isSelected = selectedMaterials.has(material.id);
+            const isPurchased = purchasedMaterials.has(material.id);
+            
+            return (
+              <div
+                key={material.id}
+                style={{
+                  display: 'grid',
+                  gridTemplateColumns: '50px 200px 120px 100px 120px 150px 180px 120px 250px',
+                  gap: '16px',
+                  padding: '16px',
+                  borderBottom: index < filteredMaterials.length - 1 ? '1px solid #f1f5f9' : 'none',
+                  background: isSelected ? '#eff6ff' : (isPurchased ? '#fef3c7' : 'white'),
+                  transition: 'background 0.15s ease',
+                  textAlign: 'center'
+                }}
+                onMouseEnter={(e) => {
+                  if (!isSelected && !isPurchased) {
+                    e.target.style.background = '#f8fafc';
+                  }
+                }}
+                onMouseLeave={(e) => {
+                  if (!isSelected && !isPurchased) {
+                    e.target.style.background = 'white';
+                  }
+                }}
+              >
+                <div>
+                  <input
+                    type="checkbox"
+                    checked={isSelected}
+                    onChange={() => handleMaterialSelect(material.id)}
+                    disabled={isPurchased}
+                    style={{ 
+                      cursor: isPurchased ? 'not-allowed' : 'pointer',
+                      opacity: isPurchased ? 0.5 : 1
+                    }}
+                  />
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', fontWeight: '500' }}>
+                  {info.subtype}
+                  {isPurchased && (
+                    <span style={{
+                      marginLeft: '8px',
+                      padding: '2px 6px',
+                      background: '#fbbf24',
+                      color: '#92400e',
+                      borderRadius: '4px',
+                      fontSize: '10px',
+                      fontWeight: '500'
+                    }}>
+                      PURCHASED
+                    </span>
+                  )}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937' }}>
+                  {info.size}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937' }}>
+                  {info.pressure}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937' }}>
+                  {info.schedule}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937' }}>
+                  {info.grade}
+                </div>
+                <div style={{ 
+                  fontSize: '14px', 
+                  color: '#1f2937',
+                  whiteSpace: 'nowrap',
+                  overflow: 'hidden',
+                  textOverflow: 'ellipsis'
+                }}>
+                  {material.user_requirements?.join(', ') || '-'}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', fontWeight: '600', textAlign: 'right' }}>
+                  {info.quantity} {info.unit}
+                </div>
+                <div style={{ display: 'flex', gap: '4px', alignItems: 'center' }}>
+                  {!editingRequest[material.id] && savedRequests[material.id] ? (
+                    // 저장된 상태 - 요구사항 표시 + 수정 버튼
+                    <>
+                      <div style={{
+                        flex: 1,
+                        padding: '6px 8px',
+                        border: '1px solid #e5e7eb',
+                        borderRadius: '4px',
+                        fontSize: '12px',
+                        textAlign: 'center',
+                        background: '#f9fafb',
+                        color: '#374151'
+                      }}>
+                        {savedRequests[material.id]}
+                      </div>
+                      <button
+                        onClick={() => handleEditRequest(material.id, savedRequests[material.id])}
+                        disabled={isPurchased}
+                        style={{
+                          padding: '6px 8px',
+                          border: 'none',
+                          borderRadius: '4px',
+                          background: isPurchased ? '#d1d5db' : '#f59e0b',
+                          color: 'white',
+                          fontSize: '10px',
+                          cursor: isPurchased ? 'not-allowed' : 'pointer',
+                          opacity: isPurchased ? 0.5 : 1,
+                          minWidth: '40px'
+                        }}
+                      >
+                        Edit
+                      </button>
+                    </>
+                  ) : (
+                    // 편집 상태 - 입력 필드 + 저장 버튼
+                    <>
+                      <input
+                        type="text"
+                        value={userRequirements[material.id] || ''}
+                        onChange={(e) => setUserRequirements({
+                          ...userRequirements,
+                          [material.id]: e.target.value
+                        })}
+                        placeholder="Enter additional request..."
+                        disabled={isPurchased}
+                        style={{
+                          flex: 1,
+                          padding: '6px 8px',
+                          border: '1px solid #d1d5db',
+                          borderRadius: '4px',
+                          fontSize: '12px',
+                          opacity: isPurchased ? 0.5 : 1,
+                          cursor: isPurchased ? 'not-allowed' : 'text'
+                        }}
+                      />
+                      <button
+                        onClick={() => handleSaveRequest(material.id, userRequirements[material.id] || '')}
+                        disabled={isPurchased || savingRequest[material.id]}
+                        style={{
+                          padding: '6px 8px',
+                          border: 'none',
+                          borderRadius: '4px',
+                          background: isPurchased ? '#d1d5db' : '#10b981',
+                          color: 'white',
+                          fontSize: '10px',
+                          cursor: isPurchased || savingRequest[material.id] ? 'not-allowed' : 'pointer',
+                          opacity: isPurchased ? 0.5 : 1,
+                          minWidth: '40px'
+                        }}
+                      >
+                        {savingRequest[material.id] ? '...' : 'Save'}
+                      </button>
+                    </>
+                  )}
+                </div>
+              </div>
+            );
+          })}
+        </div>
+      </div>
+
+      {filteredMaterials.length === 0 && (
+        <div style={{
+          textAlign: 'center',
+          padding: '60px 20px',
+          color: '#64748b'
+        }}>
+          <div style={{ fontSize: '18px', fontWeight: '600', marginBottom: '8px' }}>
+            No Fitting Materials Found
+          </div>
+          <div style={{ fontSize: '14px' }}>
+            {Object.keys(columnFilters).some(key => columnFilters[key]) 
+              ? 'Try adjusting your filters' 
+              : 'No fitting materials available in this BOM'}
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default FittingMaterialsView;

frontend/src/components/bom/materials/FlangeMaterialsView.jsx

@@ -0,0 +1,722 @@
+import React, { useState } from 'react';
+import { exportMaterialsToExcel, createExcelBlob } from '../../../utils/excelExport';
+import api from '../../../api';
+import { FilterableHeader, MaterialTable } from '../shared';
+
+const FlangeMaterialsView = ({ 
+  materials, 
+  selectedMaterials, 
+  setSelectedMaterials,
+  userRequirements,
+  setUserRequirements,
+  purchasedMaterials,
+  onPurchasedMaterialsUpdate,
+  updateMaterial, // 자재 업데이트 함수
+  fileId,
+  jobNo,
+  user,
+  onNavigate 
+}) => {
+  const [sortConfig, setSortConfig] = useState({ key: null, direction: 'asc' });
+  const [columnFilters, setColumnFilters] = useState({});
+  const [showFilterDropdown, setShowFilterDropdown] = useState(null);
+  const [savedRequests, setSavedRequests] = useState({}); // 저장된 추가요구사항 상태
+  const [editingRequest, setEditingRequest] = useState({}); // 추가요구사항 편집 모드
+  const [savingRequest, setSavingRequest] = useState({}); // 추가요구사항 저장 중 상태
+
+  // 컴포넌트 마운트 시 저장된 데이터 로드
+  React.useEffect(() => {
+    const loadSavedData = () => {
+      const savedRequestsData = {};
+      
+      materials.forEach(material => {
+        if (material.user_requirement && material.user_requirement.trim()) {
+          savedRequestsData[material.id] = material.user_requirement.trim();
+        }
+      });
+      
+      setSavedRequests(savedRequestsData);
+    };
+
+    if (materials && materials.length > 0) {
+      loadSavedData();
+    } else {
+      setSavedRequests({});
+    }
+  }, [materials]);
+
+  // 추가요구사항 저장 함수
+  const handleSaveRequest = async (materialId, request) => {
+    setSavingRequest(prev => ({ ...prev, [materialId]: true }));
+    try {
+      await api.patch(`/materials/${materialId}/user-requirement`, { 
+        user_requirement: request.trim() 
+      });
+      setSavedRequests(prev => ({ ...prev, [materialId]: request.trim() }));
+      setEditingRequest(prev => ({ ...prev, [materialId]: false }));
+      setUserRequirements(prev => ({ ...prev, [materialId]: '' }));
+      
+      if (updateMaterial) {
+        updateMaterial(materialId, { user_requirement: request.trim() });
+      }
+    } catch (error) {
+      console.error('추가요구사항 저장 실패:', error);
+      alert('추가요구사항 저장에 실패했습니다.');
+    } finally {
+      setSavingRequest(prev => ({ ...prev, [materialId]: false }));
+    }
+  };
+
+  // 추가요구사항 편집 시작
+  const handleEditRequest = (materialId, currentRequest) => {
+    setEditingRequest(prev => ({ ...prev, [materialId]: true }));
+    setUserRequirements(prev => ({ ...prev, [materialId]: currentRequest || '' }));
+  };
+
+  // 플랜지 정보 파싱
+  const parseFlangeInfo = (material) => {
+    const description = material.original_description || '';
+    const flangeDetails = material.flange_details || {};
+
+    const flangeTypeMap = {
+      'WN': 'WELD NECK FLANGE',
+      'WELD_NECK': 'WELD NECK FLANGE',
+      'SO': 'SLIP ON FLANGE',
+      'SLIP_ON': 'SLIP ON FLANGE',
+      'SW': 'SOCKET WELD FLANGE',
+      'SOCKET_WELD': 'SOCKET WELD FLANGE',
+      'THREADED': 'THREADED FLANGE',
+      'THD': 'THREADED FLANGE',
+      'BLIND': 'BLIND FLANGE',
+      'LAP_JOINT': 'LAP JOINT FLANGE',
+      'LJ': 'LAP JOINT FLANGE',
+      'REDUCING': 'REDUCING FLANGE',
+      'ORIFICE': 'ORIFICE FLANGE',
+      'SPECTACLE': 'SPECTACLE BLIND',
+      'SPECTACLE_BLIND': 'SPECTACLE BLIND',
+      'PADDLE': 'PADDLE BLIND',
+      'PADDLE_BLIND': 'PADDLE BLIND',
+      'SPACER': 'SPACER',
+      'SWIVEL': 'SWIVEL FLANGE',
+      'DRIP_RING': 'DRIP RING',
+      'NOZZLE': 'NOZZLE FLANGE'
+    };
+
+    const facingTypeMap = {
+      'RF': 'RAISED FACE',
+      'RAISED_FACE': 'RAISED FACE',
+      'FF': 'FLAT FACE',
+      'FLAT_FACE': 'FLAT FACE',
+      'RTJ': 'RING TYPE JOINT',
+      'RING_TYPE_JOINT': 'RING TYPE JOINT'
+    };
+
+    const rawFlangeType = flangeDetails.flange_type || '';
+    const rawFacingType = flangeDetails.facing_type || '';
+
+
+    // rawFlangeType에서 facing 정보 분리 (예: "WN RF" -> "WN")
+    let cleanFlangeType = rawFlangeType;
+    let extractedFacing = rawFacingType;
+
+    // facing 정보가 flange_type에 포함된 경우 분리
+    if (rawFlangeType.includes(' RF')) {
+      cleanFlangeType = rawFlangeType.replace(' RF', '').trim();
+      if (!extractedFacing || extractedFacing === '-') extractedFacing = 'RAISED_FACE';
+    } else if (rawFlangeType.includes(' FF')) {
+      cleanFlangeType = rawFlangeType.replace(' FF', '').trim();
+      if (!extractedFacing || extractedFacing === '-') extractedFacing = 'FLAT_FACE';
+    } else if (rawFlangeType.includes(' RTJ')) {
+      cleanFlangeType = rawFlangeType.replace(' RTJ', '').trim();
+      if (!extractedFacing || extractedFacing === '-') extractedFacing = 'RING_TYPE_JOINT';
+    }
+
+    let displayType = flangeTypeMap[cleanFlangeType] || '-';
+    let facingType = facingTypeMap[extractedFacing] || '-';
+
+    // Description에서 추출
+    if (displayType === '-') {
+      const desc = description.toUpperCase();
+      if (desc.includes('ORIFICE')) {
+        displayType = 'ORIFICE FLANGE';
+      } else if (desc.includes('SPECTACLE')) {
+        displayType = 'SPECTACLE BLIND';
+      } else if (desc.includes('PADDLE')) {
+        displayType = 'PADDLE BLIND';
+      } else if (desc.includes('SPACER')) {
+        displayType = 'SPACER';
+      } else if (desc.includes('REDUCING') || desc.includes('RED')) {
+        displayType = 'REDUCING FLANGE';
+      } else if (desc.includes('BLIND')) {
+        displayType = 'BLIND FLANGE';
+      } else if (desc.includes('WN RF') || desc.includes('WN-RF')) {
+        displayType = 'WELD NECK FLANGE';
+        if (facingType === '-') facingType = 'RAISED FACE';
+      } else if (desc.includes('WN FF') || desc.includes('WN-FF')) {
+        displayType = 'WELD NECK FLANGE';
+        if (facingType === '-') facingType = 'FLAT FACE';
+      } else if (desc.includes('WN RTJ') || desc.includes('WN-RTJ')) {
+        displayType = 'WELD NECK FLANGE';
+        if (facingType === '-') facingType = 'RING TYPE JOINT';
+      } else if (desc.includes('WN')) {
+        displayType = 'WELD NECK FLANGE';
+      } else if (desc.includes('SO RF') || desc.includes('SO-RF')) {
+        displayType = 'SLIP ON FLANGE';
+        if (facingType === '-') facingType = 'RAISED FACE';
+      } else if (desc.includes('SO FF') || desc.includes('SO-FF')) {
+        displayType = 'SLIP ON FLANGE';
+        if (facingType === '-') facingType = 'FLAT FACE';
+      } else if (desc.includes('SO')) {
+        displayType = 'SLIP ON FLANGE';
+      } else if (desc.includes('SW')) {
+        displayType = 'SOCKET WELD FLANGE';
+      } else {
+        displayType = 'FLANGE';
+      }
+    }
+
+    if (facingType === '-') {
+      const desc = description.toUpperCase();
+      if (desc.includes('RF')) {
+        facingType = 'RAISED FACE';
+      } else if (desc.includes('FF')) {
+        facingType = 'FLAT FACE';
+      } else if (desc.includes('RTJ')) {
+        facingType = 'RING TYPE JOINT';
+      }
+    }
+
+    // 원본 설명에서 스케줄 추출
+    let schedule = '-';
+    const upperDesc = description.toUpperCase();
+    
+    // SCH 40, SCH 80 등의 패턴 찾기
+    if (upperDesc.includes('SCH')) {
+      const schMatch = description.match(/SCH\s*(\d+[A-Z]*)/i);
+      if (schMatch && schMatch[1]) {
+        schedule = `SCH ${schMatch[1]}`;
+      }
+    }
+    
+    // 압력 등급 추출
+    let pressure = '-';
+    const pressureMatch = description.match(/(\d+)LB/i);
+    if (pressureMatch) {
+      pressure = `${pressureMatch[1]}LB`;
+    }
+
+    return {
+      type: 'FLANGE',
+      subtype: displayType,  // 풀네임 플랜지 타입
+      facing: facingType,    // 새로 추가: 끝단처리 정보
+      size: material.size_spec || '-',
+      pressure: flangeDetails.pressure_rating || pressure,
+      schedule: schedule,
+      grade: material.full_material_grade || material.material_grade || '-',
+      quantity: Math.round(material.quantity || 0),
+      unit: '개',
+      isFlange: true // 플랜지 구분용 플래그
+    };
+  };
+
+  // 정렬 처리
+  const handleSort = (key) => {
+    let direction = 'asc';
+    if (sortConfig.key === key && sortConfig.direction === 'asc') {
+      direction = 'desc';
+    }
+    setSortConfig({ key, direction });
+  };
+
+  // 필터링된 및 정렬된 자재 목록
+  const getFilteredAndSortedMaterials = () => {
+    let filtered = materials.filter(material => {
+      return Object.entries(columnFilters).every(([key, filterValue]) => {
+        if (!filterValue) return true;
+        const info = parseFlangeInfo(material);
+        const value = info[key]?.toString().toLowerCase() || '';
+        return value.includes(filterValue.toLowerCase());
+      });
+    });
+
+    if (sortConfig.key) {
+      filtered.sort((a, b) => {
+        const aInfo = parseFlangeInfo(a);
+        const bInfo = parseFlangeInfo(b);
+        const aValue = aInfo[sortConfig.key] || '';
+        const bValue = bInfo[sortConfig.key] || '';
+        
+        if (sortConfig.direction === 'asc') {
+          return aValue > bValue ? 1 : -1;
+        } else {
+          return aValue < bValue ? 1 : -1;
+        }
+      });
+    }
+
+    return filtered;
+  };
+
+  // 전체 선택/해제
+  const handleSelectAll = () => {
+    const filteredMaterials = getFilteredAndSortedMaterials();
+    if (selectedMaterials.size === filteredMaterials.length) {
+      setSelectedMaterials(new Set());
+    } else {
+      setSelectedMaterials(new Set(filteredMaterials.map(m => m.id)));
+    }
+  };
+
+  // 개별 선택
+  const handleMaterialSelect = (materialId) => {
+    const newSelected = new Set(selectedMaterials);
+    if (newSelected.has(materialId)) {
+      newSelected.delete(materialId);
+    } else {
+      newSelected.add(materialId);
+    }
+    setSelectedMaterials(newSelected);
+  };
+
+  // 엑셀 내보내기
+  const handleExportToExcel = async () => {
+    const selectedMaterialsData = materials.filter(m => selectedMaterials.has(m.id));
+    if (selectedMaterialsData.length === 0) {
+      alert('내보낼 자재를 선택해주세요.');
+      return;
+    }
+
+    const timestamp = new Date().toISOString().slice(0, 19).replace(/:/g, '-');
+    const excelFileName = `FLANGE_Materials_${timestamp}.xlsx`;
+
+    const dataWithRequirements = selectedMaterialsData.map(material => ({
+      ...material,
+      user_requirement: savedRequests[material.id] || userRequirements[material.id] || ''
+    }));
+
+    try {
+      console.log('🔄 엑셀 내보내기 시작 - 새로운 방식');
+      
+      // 1. 먼저 클라이언트에서 엑셀 파일 생성
+      console.log('📊 엑셀 Blob 생성 중...', dataWithRequirements.length, '개 자료');
+      const excelBlob = await createExcelBlob(dataWithRequirements, excelFileName, {
+        category: 'FLANGE',
+        filename: excelFileName,
+        uploadDate: new Date().toLocaleDateString()
+      });
+      console.log('✅ 엑셀 Blob 생성 완료:', excelBlob.size, 'bytes');
+
+      // 2. 구매신청 생성
+      const allMaterialIds = selectedMaterialsData.map(m => m.id);
+      const response = await api.post('/purchase-request/create', {
+        file_id: fileId,
+        job_no: jobNo,
+        category: 'FLANGE',
+        material_ids: allMaterialIds,
+        materials_data: dataWithRequirements.map(m => ({
+          material_id: m.id,
+          description: m.original_description,
+          category: m.classified_category,
+          size: m.size_inch || m.size_spec,
+          schedule: m.schedule,
+          material_grade: m.material_grade || m.full_material_grade,
+          quantity: m.quantity,
+          unit: m.unit,
+          user_requirement: userRequirements[m.id] || ''
+        }))
+      });
+
+      if (response.data.success) {
+        console.log(`✅ 구매신청 완료: ${response.data.request_no}, request_id: ${response.data.request_id}`);
+        
+        // 3. 생성된 엑셀 파일을 서버에 업로드
+        console.log('📤 서버에 엑셀 파일 업로드 중...');
+        const formData = new FormData();
+        formData.append('excel_file', excelBlob, excelFileName);
+        formData.append('request_id', response.data.request_id);
+        formData.append('category', 'FLANGE');
+        
+        const uploadResponse = await api.post('/purchase-request/upload-excel', formData, {
+          headers: {
+            'Content-Type': 'multipart/form-data',
+          },
+        });
+        console.log('✅ 엑셀 업로드 완료:', uploadResponse.data);
+
+        if (onPurchasedMaterialsUpdate) {
+          onPurchasedMaterialsUpdate(allMaterialIds);
+        }
+      }
+
+      // 4. 클라이언트 다운로드
+      const url = window.URL.createObjectURL(excelBlob);
+      const link = document.createElement('a');
+      link.href = url;
+      link.download = excelFileName;
+      document.body.appendChild(link);
+      link.click();
+      document.body.removeChild(link);
+      window.URL.revokeObjectURL(url);
+
+      alert(`구매신청 ${response.data?.request_no || ''}이 생성되고 엑셀 파일이 저장되었습니다.`);
+    } catch (error) {
+      console.error('엑셀 저장 또는 구매신청 실패:', error);
+      // 실패 시에도 클라이언트 다운로드는 진행
+      exportMaterialsToExcel(dataWithRequirements, excelFileName, {
+        category: 'FLANGE',
+        filename: excelFileName,
+        uploadDate: new Date().toLocaleDateString()
+      });
+      alert('엑셀 파일은 다운로드되었지만 구매신청 생성에 실패했습니다.');
+    }
+
+    setSelectedMaterials(new Set());
+  };
+
+  const filteredMaterials = getFilteredAndSortedMaterials();
+
+  // 필터 헤더 컴포넌트
+  const FilterableHeader = ({ sortKey, filterKey, children }) => (
+    <div className="filterable-header" style={{ position: 'relative' }}>
+      <div style={{ display: 'flex', alignItems: 'center', gap: '8px' }}>
+        <span
+          onClick={() => handleSort(sortKey)}
+          style={{ cursor: 'pointer', flex: 1 }}
+        >
+          {children}
+          {sortConfig.key === sortKey && (
+            <span style={{ marginLeft: '4px' }}>
+              {sortConfig.direction === 'asc' ? '↑' : '↓'}
+            </span>
+          )}
+        </span>
+        <button
+          onClick={() => setShowFilterDropdown(showFilterDropdown === filterKey ? null : filterKey)}
+          style={{
+            background: 'none',
+            border: 'none',
+            cursor: 'pointer',
+            padding: '2px',
+            fontSize: '12px',
+            color: '#6b7280'
+          }}
+        >
+          🔍
+        </button>
+      </div>
+      {showFilterDropdown === filterKey && (
+        <div style={{
+          position: 'absolute',
+          top: '100%',
+          left: 0,
+          background: 'white',
+          border: '1px solid #e2e8f0',
+          borderRadius: '6px',
+          padding: '8px',
+          boxShadow: '0 4px 6px rgba(0, 0, 0, 0.1)',
+          zIndex: 1000,
+          minWidth: '150px'
+        }}>
+          <input
+            type="text"
+            placeholder={`Filter ${children}...`}
+            value={columnFilters[filterKey] || ''}
+            onChange={(e) => setColumnFilters({
+              ...columnFilters,
+              [filterKey]: e.target.value
+            })}
+            style={{
+              width: '100%',
+              padding: '4px 8px',
+              border: '1px solid #d1d5db',
+              borderRadius: '4px',
+              fontSize: '12px'
+            }}
+            autoFocus
+          />
+        </div>
+      )}
+    </div>
+  );
+
+  return (
+    <div style={{ padding: '32px' }}>
+      {/* 헤더 */}
+      <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: '24px' }}>
+        <div>
+          <h3 style={{ 
+            fontSize: '24px', 
+            fontWeight: '700', 
+            color: '#0f172a', 
+            margin: '0 0 8px 0' 
+          }}>
+            Flange Materials
+          </h3>
+          <p style={{ 
+            fontSize: '14px', 
+            color: '#64748b', 
+            margin: 0 
+          }}>
+            {filteredMaterials.length} items • {selectedMaterials.size} selected
+          </p>
+        </div>
+        
+        <div style={{ display: 'flex', gap: '12px' }}>
+          <button
+            onClick={handleSelectAll}
+            style={{
+              background: 'white',
+              color: '#6b7280',
+              border: '1px solid #d1d5db',
+              borderRadius: '8px',
+              padding: '10px 16px',
+              cursor: 'pointer',
+              fontSize: '14px',
+              fontWeight: '500'
+            }}
+          >
+            {selectedMaterials.size === filteredMaterials.length ? 'Deselect All' : 'Select All'}
+          </button>
+          
+          <button
+            onClick={handleExportToExcel}
+            disabled={selectedMaterials.size === 0}
+            style={{
+              background: selectedMaterials.size > 0 ? 'linear-gradient(135deg, #f59e0b 0%, #d97706 100%)' : '#e5e7eb',
+              color: selectedMaterials.size > 0 ? 'white' : '#9ca3af',
+              border: 'none',
+              borderRadius: '8px',
+              padding: '10px 16px',
+              cursor: selectedMaterials.size > 0 ? 'pointer' : 'not-allowed',
+              fontSize: '14px',
+              fontWeight: '500'
+            }}
+          >
+            Export to Excel ({selectedMaterials.size})
+          </button>
+        </div>
+      </div>
+
+      {/* 테이블 */}
+      <div style={{ 
+        background: 'white', 
+        borderRadius: '12px', 
+        overflow: 'auto',
+        maxHeight: '600px',
+        boxShadow: '0 1px 3px rgba(0, 0, 0, 0.1)'
+      }}>
+        <div style={{ minWidth: '1400px' }}>
+          {/* 헤더 */}
+          <div style={{
+            display: 'grid',
+            gridTemplateColumns: '50px 250px 150px 120px 120px 100px 150px 180px 250px',
+            gap: '16px',
+            padding: '16px',
+            background: '#f8fafc',
+            borderBottom: '1px solid #e2e8f0',
+            fontSize: '14px',
+            fontWeight: '600',
+            color: '#374151',
+            textAlign: 'center'
+          }}>
+            <div>
+              <input
+                type="checkbox"
+                checked={(() => {
+                  const selectableMaterials = filteredMaterials.filter(m => !purchasedMaterials.has(m.id));
+                  return selectedMaterials.size === selectableMaterials.length && selectableMaterials.length > 0;
+                })()}
+                onChange={handleSelectAll}
+                style={{ cursor: 'pointer' }}
+              />
+            </div>
+            <FilterableHeader sortKey="subtype" filterKey="subtype">Type</FilterableHeader>
+            <FilterableHeader sortKey="facing" filterKey="facing">Facing</FilterableHeader>
+            <FilterableHeader sortKey="size" filterKey="size">Size</FilterableHeader>
+            <FilterableHeader sortKey="pressure" filterKey="pressure">Pressure</FilterableHeader>
+            <FilterableHeader sortKey="schedule" filterKey="schedule">Schedule</FilterableHeader>
+            <FilterableHeader sortKey="grade" filterKey="grade">Material Grade</FilterableHeader>
+            <div>Purchase Quantity</div>
+            <div>Additional Request</div>
+          </div>
+
+        {/* 데이터 행들 */}
+        <div>
+          {filteredMaterials.map((material, index) => {
+            const info = parseFlangeInfo(material);
+            const isSelected = selectedMaterials.has(material.id);
+            const isPurchased = purchasedMaterials.has(material.id);
+            
+            return (
+              <div
+                key={material.id}
+                style={{
+                  display: 'grid',
+                  gridTemplateColumns: '50px 250px 150px 120px 120px 100px 150px 180px 250px',
+                  gap: '12px',
+                  padding: '16px',
+                  borderBottom: index < filteredMaterials.length - 1 ? '1px solid #f1f5f9' : 'none',
+                  background: isSelected ? '#eff6ff' : (isPurchased ? '#fef3c7' : 'white'),
+                  transition: 'background 0.15s ease'
+                }}
+                onMouseEnter={(e) => {
+                  if (!isSelected && !isPurchased) {
+                    e.target.style.background = '#f8fafc';
+                  }
+                }}
+                onMouseLeave={(e) => {
+                  if (!isSelected && !isPurchased) {
+                    e.target.style.background = 'white';
+                  }
+                }}
+              >
+                <div>
+                  <input
+                    type="checkbox"
+                    checked={isSelected}
+                    onChange={() => handleMaterialSelect(material.id)}
+                    disabled={isPurchased}
+                    style={{
+                      cursor: isPurchased ? 'not-allowed' : 'pointer',
+                      opacity: isPurchased ? 0.5 : 1
+                    }}
+                  />
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', fontWeight: '500', textAlign: 'center' }}>
+                  {info.subtype}
+                  {isPurchased && (
+                    <span style={{
+                      marginLeft: '8px',
+                      padding: '2px 6px',
+                      background: '#fbbf24',
+                      color: '#92400e',
+                      borderRadius: '4px',
+                      fontSize: '10px',
+                      fontWeight: '500'
+                    }}>
+                      PURCHASED
+                    </span>
+                  )}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', textAlign: 'center' }}>
+                  {info.facing}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', textAlign: 'center' }}>
+                  {info.size}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', textAlign: 'center' }}>
+                  {info.pressure}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', textAlign: 'center' }}>
+                  {info.schedule}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', textAlign: 'center' }}>
+                  {info.grade}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', fontWeight: '600', textAlign: 'center' }}>
+                  {info.quantity} {info.unit}
+                </div>
+                <div style={{ display: 'flex', gap: '4px', alignItems: 'center' }}>
+                  {!editingRequest[material.id] && savedRequests[material.id] ? (
+                    // 저장된 상태 - 요구사항 표시 + 수정 버튼
+                    <>
+                      <div style={{
+                        flex: 1,
+                        padding: '6px 8px',
+                        border: '1px solid #e5e7eb',
+                        borderRadius: '4px',
+                        fontSize: '12px',
+                        textAlign: 'center',
+                        background: '#f9fafb',
+                        color: '#374151'
+                      }}>
+                        {savedRequests[material.id]}
+                      </div>
+                      <button
+                        onClick={() => handleEditRequest(material.id, savedRequests[material.id])}
+                        disabled={isPurchased}
+                        style={{
+                          padding: '6px 8px',
+                          border: 'none',
+                          borderRadius: '4px',
+                          background: isPurchased ? '#d1d5db' : '#f59e0b',
+                          color: 'white',
+                          fontSize: '10px',
+                          cursor: isPurchased ? 'not-allowed' : 'pointer',
+                          opacity: isPurchased ? 0.5 : 1,
+                          minWidth: '40px'
+                        }}
+                      >
+                        Edit
+                      </button>
+                    </>
+                  ) : (
+                    // 편집 상태 - 입력 필드 + 저장 버튼
+                    <>
+                      <input
+                        type="text"
+                        value={userRequirements[material.id] || ''}
+                        onChange={(e) => setUserRequirements({
+                          ...userRequirements,
+                          [material.id]: e.target.value
+                        })}
+                        placeholder="Enter additional request..."
+                        disabled={isPurchased}
+                        style={{
+                          flex: 1,
+                          padding: '6px 8px',
+                          border: '1px solid #d1d5db',
+                          borderRadius: '4px',
+                          fontSize: '12px',
+                          opacity: isPurchased ? 0.5 : 1,
+                          cursor: isPurchased ? 'not-allowed' : 'text'
+                        }}
+                      />
+                      <button
+                        onClick={() => handleSaveRequest(material.id, userRequirements[material.id] || '')}
+                        disabled={isPurchased || savingRequest[material.id]}
+                        style={{
+                          padding: '6px 8px',
+                          border: 'none',
+                          borderRadius: '4px',
+                          background: isPurchased ? '#d1d5db' : '#10b981',
+                          color: 'white',
+                          fontSize: '10px',
+                          cursor: isPurchased || savingRequest[material.id] ? 'not-allowed' : 'pointer',
+                          opacity: isPurchased ? 0.5 : 1,
+                          minWidth: '40px'
+                        }}
+                      >
+                        {savingRequest[material.id] ? '...' : 'Save'}
+                      </button>
+                    </>
+                  )}
+                </div>
+              </div>
+            );
+          })}
+        </div>
+
+      {filteredMaterials.length === 0 && (
+        <div style={{
+          textAlign: 'center',
+          padding: '60px 20px',
+          color: '#64748b'
+        }}>
+          <div style={{ fontSize: '18px', fontWeight: '600', marginBottom: '8px' }}>
+            No Flange Materials Found
+          </div>
+          <div style={{ fontSize: '14px' }}>
+            {Object.keys(columnFilters).some(key => columnFilters[key]) 
+              ? 'Try adjusting your filters' 
+              : 'No flange materials available in this BOM'}
+          </div>
+        </div>
+      )}
+        </div>
+      </div>
+    </div>
+  );
+};
+
+export default FlangeMaterialsView;

frontend/src/components/bom/materials/GasketMaterialsView.jsx

@@ -0,0 +1,693 @@
+import React, { useState } from 'react';
+import { exportMaterialsToExcel, createExcelBlob } from '../../../utils/excelExport';
+import api from '../../../api';
+import { FilterableHeader } from '../shared';
+
+const GasketMaterialsView = ({ 
+  materials, 
+  selectedMaterials, 
+  setSelectedMaterials,
+  userRequirements,
+  setUserRequirements,
+  purchasedMaterials,
+  onPurchasedMaterialsUpdate,
+  updateMaterial, // 자재 업데이트 함수
+  fileId,
+  jobNo,
+  user 
+}) => {
+  const [sortConfig, setSortConfig] = useState({ key: null, direction: 'asc' });
+  const [columnFilters, setColumnFilters] = useState({});
+  const [showFilterDropdown, setShowFilterDropdown] = useState(null);
+  const [savedRequests, setSavedRequests] = useState({}); // 저장된 추가요구사항 상태
+  const [editingRequest, setEditingRequest] = useState({}); // 추가요구사항 편집 모드
+  const [savingRequest, setSavingRequest] = useState({}); // 추가요구사항 저장 중 상태
+
+  // 컴포넌트 마운트 시 저장된 데이터 로드
+  React.useEffect(() => {
+    const loadSavedData = () => {
+      const savedRequestsData = {};
+      
+      materials.forEach(material => {
+        if (material.user_requirement && material.user_requirement.trim()) {
+          savedRequestsData[material.id] = material.user_requirement.trim();
+        }
+      });
+      
+      setSavedRequests(savedRequestsData);
+    };
+
+    if (materials && materials.length > 0) {
+      loadSavedData();
+    } else {
+      setSavedRequests({});
+    }
+  }, [materials]);
+
+  // 추가요구사항 저장 함수
+  const handleSaveRequest = async (materialId, request) => {
+    setSavingRequest(prev => ({ ...prev, [materialId]: true }));
+    try {
+      await api.patch(`/materials/${materialId}/user-requirement`, { 
+        user_requirement: request.trim() 
+      });
+      setSavedRequests(prev => ({ ...prev, [materialId]: request.trim() }));
+      setEditingRequest(prev => ({ ...prev, [materialId]: false }));
+      setUserRequirements(prev => ({ ...prev, [materialId]: '' }));
+      
+      if (updateMaterial) {
+        updateMaterial(materialId, { user_requirement: request.trim() });
+      }
+    } catch (error) {
+      console.error('추가요구사항 저장 실패:', error);
+      alert('추가요구사항 저장에 실패했습니다.');
+    } finally {
+      setSavingRequest(prev => ({ ...prev, [materialId]: false }));
+    }
+  };
+
+  // 추가요구사항 편집 시작
+  const handleEditRequest = (materialId, currentRequest) => {
+    setEditingRequest(prev => ({ ...prev, [materialId]: true }));
+    setUserRequirements(prev => ({ ...prev, [materialId]: currentRequest || '' }));
+  };
+
+  const parseGasketInfo = (material) => {
+    const qty = Math.round(material.quantity || 0);
+    const purchaseQty = Math.ceil(qty * 1.05 / 5) * 5; // 5% 여유율 + 5의 배수
+    
+    const description = material.original_description || '';
+    
+    // 가스켓 타입 풀네임 매핑
+    const gasketTypeMap = {
+      'SWG': 'SPIRAL WOUND GASKET',
+      'RTJ': 'RING TYPE JOINT',
+      'FF': 'FULL FACE GASKET',
+      'RF': 'RAISED FACE GASKET',
+      'SHEET': 'SHEET GASKET',
+      'O-RING': 'O-RING GASKET'
+    };
+    
+    // 타입 추출 및 풀네임 변환
+    let gasketType = '-';
+    const typeMatch = description.match(/\b(SWG|RTJ|FF|RF|SHEET|O-RING)\b/i);
+    if (typeMatch) {
+      const shortType = typeMatch[1].toUpperCase();
+      gasketType = gasketTypeMap[shortType] || shortType;
+    }
+    
+    // 크기 정보 추출 (예: 1 1/2")
+    let size = material.size_spec || material.size_inch || '-';
+    if (size === '-') {
+      const sizeMatch = description.match(/(\d+(?:\s+\d+\/\d+)?(?:\.\d+)?)\s*"/);
+      if (sizeMatch) {
+        size = sizeMatch[1] + '"';
+      }
+    }
+    
+    // 압력등급 추출
+    let pressure = '-';
+    const pressureMatch = description.match(/(\d+LB)/i);
+    if (pressureMatch) {
+      pressure = pressureMatch[1];
+    }
+    
+    // 구조 정보 추출 (H/F/I/O)
+    let structure = '-';
+    if (description.includes('H/F/I/O')) {
+      structure = 'H/F/I/O';
+    }
+    
+    // 재질 상세 정보 추출 (SS304/GRAPHITE/SS304/SS304)
+    let material_detail = '-';
+    const materialMatch = description.match(/H\/F\/I\/O\s+([^,]+)/);
+    if (materialMatch) {
+      material_detail = materialMatch[1].trim();
+      // 두께 정보 제거
+      material_detail = material_detail.replace(/,?\s*\d+(?:\.\d+)?mm$/, '').trim();
+    }
+    
+    // 두께 정보 추출
+    let thickness = '-';
+    const thicknessMatch = description.match(/(\d+(?:\.\d+)?)\s*mm/i);
+    if (thicknessMatch) {
+      thickness = thicknessMatch[1] + 'mm';
+    }
+    
+    return {
+      type: gasketType, // 풀네임으로 표시 (SPIRAL WOUND GASKET)
+      size: size,
+      pressure: pressure,
+      structure: structure, // H/F/I/O
+      material: material_detail, // SS304/GRAPHITE/SS304/SS304
+      thickness: thickness,
+      userRequirements: material.user_requirements?.join(', ') || '-',
+      purchaseQuantity: purchaseQty,
+      isGasket: true
+    };
+  };
+
+  // 정렬 처리
+  const handleSort = (key) => {
+    let direction = 'asc';
+    if (sortConfig.key === key && sortConfig.direction === 'asc') {
+      direction = 'desc';
+    }
+    setSortConfig({ key, direction });
+  };
+
+  // 필터링된 및 정렬된 자재 목록
+  const getFilteredAndSortedMaterials = () => {
+    let filtered = materials.filter(material => {
+      return Object.entries(columnFilters).every(([key, filterValue]) => {
+        if (!filterValue) return true;
+        const info = parseGasketInfo(material);
+        const value = info[key]?.toString().toLowerCase() || '';
+        return value.includes(filterValue.toLowerCase());
+      });
+    });
+
+    if (sortConfig && sortConfig.key) {
+      filtered.sort((a, b) => {
+        const aInfo = parseGasketInfo(a);
+        const bInfo = parseGasketInfo(b);
+        
+        if (!aInfo || !bInfo) return 0;
+        
+        const aValue = aInfo[sortConfig.key];
+        const bValue = bInfo[sortConfig.key];
+        
+        // 값이 없는 경우 처리
+        if (aValue === undefined && bValue === undefined) return 0;
+        if (aValue === undefined) return 1;
+        if (bValue === undefined) return -1;
+        
+        // 숫자인 경우 숫자로 비교
+        if (typeof aValue === 'number' && typeof bValue === 'number') {
+          return sortConfig.direction === 'asc' ? aValue - bValue : bValue - aValue;
+        }
+        
+        // 문자열로 비교
+        const aStr = String(aValue).toLowerCase();
+        const bStr = String(bValue).toLowerCase();
+        
+        if (sortConfig.direction === 'asc') {
+          return aStr.localeCompare(bStr);
+        } else {
+          return bStr.localeCompare(aStr);
+        }
+      });
+    }
+
+    return filtered;
+  };
+
+  // 전체 선택/해제 (구매신청된 자재 제외)
+  const handleSelectAll = () => {
+    const filteredMaterials = getFilteredAndSortedMaterials();
+    const selectableMaterials = filteredMaterials.filter(m => !purchasedMaterials.has(m.id));
+    
+    if (selectedMaterials.size === selectableMaterials.length) {
+      setSelectedMaterials(new Set());
+    } else {
+      setSelectedMaterials(new Set(selectableMaterials.map(m => m.id)));
+    }
+  };
+
+  // 개별 선택 (구매신청된 자재는 선택 불가)
+  const handleMaterialSelect = (materialId) => {
+    if (purchasedMaterials.has(materialId)) {
+      return; // 구매신청된 자재는 선택 불가
+    }
+    
+    const newSelected = new Set(selectedMaterials);
+    if (newSelected.has(materialId)) {
+      newSelected.delete(materialId);
+    } else {
+      newSelected.add(materialId);
+    }
+    setSelectedMaterials(newSelected);
+  };
+
+  // 엑셀 내보내기
+  const handleExportToExcel = async () => {
+    const selectedMaterialsData = materials.filter(m => selectedMaterials.has(m.id));
+    if (selectedMaterialsData.length === 0) {
+      alert('내보낼 자재를 선택해주세요.');
+      return;
+    }
+
+    const timestamp = new Date().toISOString().slice(0, 19).replace(/:/g, '-');
+    const excelFileName = `GASKET_Materials_${timestamp}.xlsx`;
+
+    const dataWithRequirements = selectedMaterialsData.map(material => ({
+      ...material,
+      user_requirement: savedRequests[material.id] || userRequirements[material.id] || ''
+    }));
+
+    try {
+      console.log('🔄 가스켓 엑셀 내보내기 시작 - 새로운 방식');
+      
+      // 1. 먼저 클라이언트에서 엑셀 파일 생성
+      console.log('📊 엑셀 Blob 생성 중...', dataWithRequirements.length, '개 자료');
+      const excelBlob = await createExcelBlob(dataWithRequirements, excelFileName, {
+        category: 'GASKET',
+        filename: excelFileName,
+        uploadDate: new Date().toLocaleDateString()
+      });
+      console.log('✅ 엑셀 Blob 생성 완료:', excelBlob.size, 'bytes');
+
+      // 2. 구매신청 생성
+      const allMaterialIds = selectedMaterialsData.map(m => m.id);
+      const response = await api.post('/purchase-request/create', {
+        file_id: fileId,
+        job_no: jobNo,
+        category: 'GASKET',
+        material_ids: allMaterialIds,
+        materials_data: dataWithRequirements.map(m => ({
+          material_id: m.id,
+          description: m.original_description,
+          category: m.classified_category,
+          size: m.size_inch || m.size_spec,
+          schedule: m.schedule,
+          material_grade: m.material_grade || m.full_material_grade,
+          quantity: m.quantity,
+          unit: m.unit,
+          user_requirement: userRequirements[m.id] || ''
+        }))
+      });
+
+      if (response.data.success) {
+        console.log(`✅ 구매신청 완료: ${response.data.request_no}, request_id: ${response.data.request_id}`);
+        
+        // 3. 생성된 엑셀 파일을 서버에 업로드
+        console.log('📤 서버에 엑셀 파일 업로드 중...');
+        const formData = new FormData();
+        formData.append('excel_file', excelBlob, excelFileName);
+        formData.append('request_id', response.data.request_id);
+        formData.append('category', 'GASKET');
+        
+        const uploadResponse = await api.post('/purchase-request/upload-excel', formData, {
+          headers: {
+            'Content-Type': 'multipart/form-data',
+          },
+        });
+        console.log('✅ 엑셀 업로드 완료:', uploadResponse.data);
+
+        if (onPurchasedMaterialsUpdate) {
+          onPurchasedMaterialsUpdate(allMaterialIds);
+        }
+      }
+
+      // 4. 클라이언트 다운로드
+      const url = window.URL.createObjectURL(excelBlob);
+      const link = document.createElement('a');
+      link.href = url;
+      link.download = excelFileName;
+      document.body.appendChild(link);
+      link.click();
+      document.body.removeChild(link);
+      window.URL.revokeObjectURL(url);
+
+      alert(`구매신청 ${response.data?.request_no || ''}이 생성되고 엑셀 파일이 저장되었습니다.`);
+    } catch (error) {
+      console.error('엑셀 저장 또는 구매신청 실패:', error);
+      // 실패 시에도 클라이언트 다운로드는 진행
+      exportMaterialsToExcel(dataWithRequirements, excelFileName, {
+        category: 'GASKET',
+        filename: excelFileName,
+        uploadDate: new Date().toLocaleDateString()
+      });
+      alert('엑셀 파일은 다운로드되었지만 구매신청 생성에 실패했습니다.');
+    }
+  };
+
+  const filteredMaterials = getFilteredAndSortedMaterials();
+
+  return (
+    <div style={{ padding: '32px' }}>
+      {/* 헤더 */}
+      <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: '24px' }}>
+        <div>
+          <h3 style={{ 
+            fontSize: '24px', 
+            fontWeight: '700', 
+            color: '#0f172a', 
+            margin: '0 0 8px 0' 
+          }}>
+            Gasket Materials
+          </h3>
+          <p style={{ 
+            fontSize: '14px', 
+            color: '#64748b', 
+            margin: 0 
+          }}>
+            {filteredMaterials.length} items • {selectedMaterials.size} selected
+          </p>
+        </div>
+        
+        <div style={{ display: 'flex', gap: '12px' }}>
+          <button
+            onClick={handleSelectAll}
+            style={{
+              background: 'white',
+              color: '#6b7280',
+              border: '1px solid #d1d5db',
+              borderRadius: '8px',
+              padding: '10px 16px',
+              cursor: 'pointer',
+              fontSize: '14px',
+              fontWeight: '500'
+            }}
+          >
+            {selectedMaterials.size === filteredMaterials.length ? 'Deselect All' : 'Select All'}
+          </button>
+          
+          <button
+            onClick={handleExportToExcel}
+            disabled={selectedMaterials.size === 0}
+            style={{
+              background: selectedMaterials.size > 0 ? 'linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%)' : '#e5e7eb',
+              color: selectedMaterials.size > 0 ? 'white' : '#9ca3af',
+              border: 'none',
+              borderRadius: '8px',
+              padding: '10px 16px',
+              cursor: selectedMaterials.size > 0 ? 'pointer' : 'not-allowed',
+              fontSize: '14px',
+              fontWeight: '500'
+            }}
+          >
+            Export to Excel ({selectedMaterials.size})
+          </button>
+        </div>
+      </div>
+
+      {/* 테이블 */}
+      <div style={{ 
+        background: 'white', 
+        borderRadius: '12px', 
+        overflow: 'auto',
+        maxHeight: '600px',
+        boxShadow: '0 1px 3px rgba(0, 0, 0, 0.1)'
+      }}>
+        <div style={{ minWidth: '1400px' }}>
+        {/* 헤더 */}
+        <div style={{
+          display: 'grid',
+          gridTemplateColumns: '50px 250px 120px 100px 120px 200px 100px 180px 200px 120px',
+          gap: '16px',
+          padding: '16px',
+          background: '#f8fafc',
+          borderBottom: '1px solid #e2e8f0',
+          fontSize: '14px',
+          fontWeight: '600',
+          color: '#374151',
+          textAlign: 'center'
+        }}>
+          <div>
+            <input
+              type="checkbox"
+              checked={(() => {
+                const selectableMaterials = filteredMaterials.filter(m => !purchasedMaterials.has(m.id));
+                return selectedMaterials.size === selectableMaterials.length && selectableMaterials.length > 0;
+              })()}
+              onChange={handleSelectAll}
+              style={{ cursor: 'pointer' }}
+            />
+          </div>
+          <FilterableHeader 
+            sortKey="type" 
+            filterKey="type"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Type
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="size" 
+            filterKey="size"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Size
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="pressure" 
+            filterKey="pressure"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Pressure
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="structure" 
+            filterKey="structure"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Structure
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="material" 
+            filterKey="material"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Material
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="thickness" 
+            filterKey="thickness"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Thickness
+          </FilterableHeader>
+          <div>User Requirements</div>
+          <div>Additional Request</div>
+          <FilterableHeader 
+            sortKey="purchaseQuantity" 
+            filterKey="purchaseQuantity"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Purchase Quantity
+          </FilterableHeader>
+        </div>
+
+          {/* 데이터 행들 */}
+          {filteredMaterials.map((material, index) => {
+            const info = parseGasketInfo(material);
+            const isSelected = selectedMaterials.has(material.id);
+            const isPurchased = purchasedMaterials.has(material.id);
+            
+            return (
+              <div
+                key={material.id}
+                style={{
+                  display: 'grid',
+                  gridTemplateColumns: '50px 250px 120px 100px 120px 200px 100px 180px 200px 120px',
+                  gap: '16px',
+                  padding: '16px',
+                  borderBottom: index < filteredMaterials.length - 1 ? '1px solid #f1f5f9' : 'none',
+                  background: isSelected ? '#eff6ff' : (isPurchased ? '#fef3c7' : 'white'),
+                  transition: 'background 0.15s ease'
+                }}
+                onMouseEnter={(e) => {
+                  if (!isSelected && !isPurchased) {
+                    e.target.style.background = '#f8fafc';
+                  }
+                }}
+                onMouseLeave={(e) => {
+                  if (!isSelected && !isPurchased) {
+                    e.target.style.background = 'white';
+                  }
+                }}
+              >
+                <div>
+                  <input
+                    type="checkbox"
+                    checked={isSelected}
+                    onChange={() => handleMaterialSelect(material.id)}
+                    disabled={isPurchased}
+                    style={{ 
+                      cursor: isPurchased ? 'not-allowed' : 'pointer',
+                      opacity: isPurchased ? 0.5 : 1
+                    }}
+                  />
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', fontWeight: '500', textAlign: 'center' }}>
+                  {info.type}
+                  {isPurchased && (
+                    <span style={{
+                      marginLeft: '8px',
+                      padding: '2px 6px',
+                      background: '#fbbf24',
+                      color: '#92400e',
+                      borderRadius: '4px',
+                      fontSize: '10px',
+                      fontWeight: '500'
+                    }}>
+                      PURCHASED
+                    </span>
+                  )}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', textAlign: 'center' }}>
+                  {info.size}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', textAlign: 'center' }}>
+                  {info.pressure}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', textAlign: 'center' }}>
+                  {info.structure}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', textAlign: 'center' }}>
+                  {info.material}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', textAlign: 'center' }}>
+                  {info.thickness}
+                </div>
+                <div style={{ 
+                  fontSize: '14px', 
+                  color: '#1f2937', 
+                  textAlign: 'center',
+                  whiteSpace: 'nowrap',
+                  overflow: 'hidden',
+                  textOverflow: 'ellipsis'
+                }}>
+                  {info.userRequirements}
+                </div>
+                <div style={{ display: 'flex', gap: '4px', alignItems: 'center' }}>
+                  {!editingRequest[material.id] && savedRequests[material.id] ? (
+                    // 저장된 상태 - 요구사항 표시 + 수정 버튼
+                    <>
+                      <div style={{
+                        flex: 1,
+                        padding: '6px 8px',
+                        border: '1px solid #e5e7eb',
+                        borderRadius: '4px',
+                        fontSize: '12px',
+                        textAlign: 'center',
+                        background: '#f9fafb',
+                        color: '#374151'
+                      }}>
+                        {savedRequests[material.id]}
+                      </div>
+                      <button
+                        onClick={() => handleEditRequest(material.id, savedRequests[material.id])}
+                        disabled={isPurchased}
+                        style={{
+                          padding: '6px 8px',
+                          border: 'none',
+                          borderRadius: '4px',
+                          background: isPurchased ? '#d1d5db' : '#f59e0b',
+                          color: 'white',
+                          fontSize: '10px',
+                          cursor: isPurchased ? 'not-allowed' : 'pointer',
+                          opacity: isPurchased ? 0.5 : 1,
+                          minWidth: '40px'
+                        }}
+                      >
+                        Edit
+                      </button>
+                    </>
+                  ) : (
+                    // 편집 상태 - 입력 필드 + 저장 버튼
+                    <>
+                      <input
+                        type="text"
+                        value={userRequirements[material.id] || ''}
+                        onChange={(e) => setUserRequirements({
+                          ...userRequirements,
+                          [material.id]: e.target.value
+                        })}
+                        placeholder="Enter additional request..."
+                        disabled={isPurchased}
+                        style={{
+                          flex: 1,
+                          padding: '6px 8px',
+                          border: '1px solid #d1d5db',
+                          borderRadius: '4px',
+                          fontSize: '12px',
+                          opacity: isPurchased ? 0.5 : 1,
+                          cursor: isPurchased ? 'not-allowed' : 'text'
+                        }}
+                      />
+                      <button
+                        onClick={() => handleSaveRequest(material.id, userRequirements[material.id] || '')}
+                        disabled={isPurchased || savingRequest[material.id]}
+                        style={{
+                          padding: '6px 8px',
+                          border: 'none',
+                          borderRadius: '4px',
+                          background: isPurchased ? '#d1d5db' : '#10b981',
+                          color: 'white',
+                          fontSize: '10px',
+                          cursor: isPurchased || savingRequest[material.id] ? 'not-allowed' : 'pointer',
+                          opacity: isPurchased ? 0.5 : 1,
+                          minWidth: '40px'
+                        }}
+                      >
+                        {savingRequest[material.id] ? '...' : 'Save'}
+                      </button>
+                    </>
+                  )}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', textAlign: 'center', fontWeight: '500' }}>
+                  {info.purchaseQuantity.toLocaleString()}
+                </div>
+              </div>
+            );
+          })}
+        </div>
+      </div>
+
+      {filteredMaterials.length === 0 && (
+        <div style={{
+          textAlign: 'center',
+          padding: '60px 20px',
+          color: '#64748b'
+        }}>
+          <div style={{ fontSize: '18px', fontWeight: '600', marginBottom: '8px' }}>
+            No Gasket Materials Found
+          </div>
+          <div style={{ fontSize: '14px' }}>
+            {Object.keys(columnFilters).some(key => columnFilters[key]) 
+              ? 'Try adjusting your filters' 
+              : 'No gasket materials available in this BOM'}
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default GasketMaterialsView;

frontend/src/components/bom/materials/PipeMaterialsView.jsx

@@ -0,0 +1,792 @@
+import React, { useState } from 'react';
+import { exportMaterialsToExcel, createExcelBlob } from '../../../utils/excelExport';
+import api from '../../../api';
+import { FilterableHeader, MaterialTable } from '../shared';
+
+const PipeMaterialsView = ({ 
+  materials, 
+  selectedMaterials, 
+  setSelectedMaterials,
+  userRequirements,
+  setUserRequirements,
+  purchasedMaterials,
+  onPurchasedMaterialsUpdate,
+  updateMaterial, // 자재 업데이트 함수
+  fileId,
+  jobNo,
+  user,
+  onNavigate 
+}) => {
+  const [sortConfig, setSortConfig] = useState({ key: null, direction: 'asc' });
+  const [columnFilters, setColumnFilters] = useState({});
+  const [showFilterDropdown, setShowFilterDropdown] = useState(null);
+  const [brandInputs, setBrandInputs] = useState({}); // 브랜드 입력 상태
+  const [savingBrand, setSavingBrand] = useState({}); // 브랜드 저장 중 상태
+  const [savingRequest, setSavingRequest] = useState({}); // 추가요구사항 저장 중 상태
+  const [savedBrands, setSavedBrands] = useState({}); // 저장된 브랜드 상태
+  const [savedRequests, setSavedRequests] = useState({}); // 저장된 추가요구사항 상태
+  const [editingBrand, setEditingBrand] = useState({}); // 브랜드 편집 모드
+  const [editingRequest, setEditingRequest] = useState({}); // 추가요구사항 편집 모드
+
+  // 컴포넌트 마운트 시 저장된 데이터 로드
+  React.useEffect(() => {
+    const loadSavedData = () => {
+      const savedBrandsData = {};
+      const savedRequestsData = {};
+      
+      materials.forEach(material => {
+        // 백엔드에서 가져온 데이터가 있으면 저장된 상태로 설정
+        if (material.brand && material.brand.trim()) {
+          savedBrandsData[material.id] = material.brand.trim();
+        }
+        if (material.user_requirement && material.user_requirement.trim()) {
+          savedRequestsData[material.id] = material.user_requirement.trim();
+        }
+      });
+      
+      setSavedBrands(savedBrandsData);
+      setSavedRequests(savedRequestsData);
+    };
+
+    if (materials && materials.length > 0) {
+      loadSavedData();
+    } else {
+      setSavedBrands({});
+      setSavedRequests({});
+    }
+  }, [materials]);
+
+  // 브랜드 저장 함수
+  const handleSaveBrand = async (materialId, brand) => {
+    if (!brand.trim()) return;
+    
+    setSavingBrand(prev => ({ ...prev, [materialId]: true }));
+    try {
+      await api.patch(`/materials/${materialId}/brand`, { brand: brand.trim() });
+      setSavedBrands(prev => ({ ...prev, [materialId]: brand.trim() }));
+      setEditingBrand(prev => ({ ...prev, [materialId]: false }));
+      setBrandInputs(prev => ({ ...prev, [materialId]: '' }));
+      
+      if (updateMaterial) {
+        updateMaterial(materialId, { brand: brand.trim() });
+      }
+    } catch (error) {
+      console.error('브랜드 저장 실패:', error);
+      alert('브랜드 저장에 실패했습니다.');
+    } finally {
+      setSavingBrand(prev => ({ ...prev, [materialId]: false }));
+    }
+  };
+
+  // 브랜드 편집 시작
+  const handleEditBrand = (materialId, currentBrand) => {
+    setEditingBrand(prev => ({ ...prev, [materialId]: true }));
+    setBrandInputs(prev => ({ ...prev, [materialId]: currentBrand || '' }));
+  };
+
+  // 추가요구사항 저장 함수
+  const handleSaveRequest = async (materialId, request) => {
+    setSavingRequest(prev => ({ ...prev, [materialId]: true }));
+    try {
+      await api.patch(`/materials/${materialId}/user-requirement`, { 
+        user_requirement: request.trim() 
+      });
+      setSavedRequests(prev => ({ ...prev, [materialId]: request.trim() }));
+      setEditingRequest(prev => ({ ...prev, [materialId]: false }));
+      setUserRequirements(prev => ({ ...prev, [materialId]: '' }));
+      
+      if (updateMaterial) {
+        updateMaterial(materialId, { user_requirement: request.trim() });
+      }
+    } catch (error) {
+      console.error('추가요구사항 저장 실패:', error);
+      alert('추가요구사항 저장에 실패했습니다.');
+    } finally {
+      setSavingRequest(prev => ({ ...prev, [materialId]: false }));
+    }
+  };
+
+  // 추가요구사항 편집 시작
+  const handleEditRequest = (materialId, currentRequest) => {
+    setEditingRequest(prev => ({ ...prev, [materialId]: true }));
+    setUserRequirements(prev => ({ ...prev, [materialId]: currentRequest || '' }));
+  };
+
+  // 파이프 구매 수량 계산 (백엔드 그룹화 데이터 활용)
+  const calculatePipePurchase = (material) => {
+    const pipeDetails = material.pipe_details || {};
+    
+    // 백엔드에서 이미 그룹화된 데이터 사용
+    let pipeCount = 1; // 기본값
+    let totalBomLengthMm = 0;
+    
+    if (pipeDetails.pipe_count && pipeDetails.total_length_mm) {
+      // 백엔드에서 그룹화된 데이터 사용
+      pipeCount = pipeDetails.pipe_count; // 실제 단관 개수
+      totalBomLengthMm = pipeDetails.total_length_mm; // 이미 합산된 총 길이
+    } else {
+      // 개별 파이프 데이터인 경우
+      pipeCount = material.quantity || 1;
+      
+      // 길이 정보 우선순위: length_mm > length > pipe_details.length_mm
+      let singlePipeLengthMm = 0;
+      if (material.length_mm) {
+        singlePipeLengthMm = material.length_mm;
+      } else if (material.length) {
+        singlePipeLengthMm = material.length * 1000; // m를 mm로 변환
+      } else if (pipeDetails.length_mm) {
+        singlePipeLengthMm = pipeDetails.length_mm;
+      }
+      
+      totalBomLengthMm = singlePipeLengthMm * pipeCount;
+    }
+    
+    // 여유분 포함 계산: 각 단관당 2mm 여유분 추가
+    const allowancePerPipe = 2; // mm
+    const totalAllowanceMm = allowancePerPipe * pipeCount;
+    const totalLengthWithAllowance = totalBomLengthMm + totalAllowanceMm; // mm
+    
+    // 6,000mm(6m) 표준 길이로 필요한 본수 계산 (올림)
+    const standardLengthMm = 6000; // mm
+    const requiredStandardPipes = Math.ceil(totalLengthWithAllowance / standardLengthMm);
+    
+    return {
+      pipeCount, // 단관 개수
+      totalBomLengthMm, // 총 BOM 길이 (mm)
+      totalLengthWithAllowance, // 여유분 포함 총 길이 (mm)
+      totalLengthM: totalLengthWithAllowance / 1000, // 총 길이 (m)
+      requiredStandardPipes, // 필요한 표준 파이프 본수
+      standardLengthMm,
+      allowancePerPipe,
+      totalAllowanceMm,
+      // 디버깅용 정보
+      isGrouped: !!(pipeDetails.pipe_count && pipeDetails.total_length_mm)
+    };
+  };
+
+  // 파이프 정보 파싱 (개선된 로직)
+  const parsePipeInfo = (material) => {
+    const calc = calculatePipePurchase(material);
+    const pipeDetails = material.pipe_details || {};
+    
+    // User 요구사항 추출 (분류기에서 제공된 정보)
+    const userRequirements = material.user_requirements || [];
+    const userReqText = userRequirements.length > 0 ? userRequirements.join(', ') : '-';
+    
+    return {
+      // Type 컬럼 제거 (모두 PIPE로 동일)
+      type: pipeDetails.manufacturing_method || 'SMLS', // Subtype을 Type으로 변경
+      size: material.size_spec || '-',
+      schedule: pipeDetails.schedule || material.schedule || '-',
+      grade: material.full_material_grade || material.material_grade || '-',
+      userRequirements: userReqText, // User 요구사항
+      length: calc.totalLengthWithAllowance, // 여유분 포함 총 길이 (mm)
+      quantity: calc.pipeCount, // 단관 개수
+      unit: `${calc.requiredStandardPipes}본`, // 6m 표준 파이프 필요 본수
+      details: calc,
+      isPipe: true
+    };
+  };
+
+
+  // 정렬 처리
+  const handleSort = (key) => {
+    let direction = 'asc';
+    if (sortConfig.key === key && sortConfig.direction === 'asc') {
+      direction = 'desc';
+    }
+    setSortConfig({ key, direction });
+  };
+
+  // 필터링된 및 정렬된 자재 목록
+  const getFilteredAndSortedMaterials = () => {
+    let filtered = materials.filter(material => {
+      return Object.entries(columnFilters).every(([key, filterValue]) => {
+        if (!filterValue) return true;
+        const info = parsePipeInfo(material);
+        const value = info[key]?.toString().toLowerCase() || '';
+        return value.includes(filterValue.toLowerCase());
+      });
+    });
+
+    if (sortConfig.key) {
+      filtered.sort((a, b) => {
+        const aInfo = parsePipeInfo(a);
+        const bInfo = parsePipeInfo(b);
+        const aValue = aInfo[sortConfig.key] || '';
+        const bValue = bInfo[sortConfig.key] || '';
+        
+        if (sortConfig.direction === 'asc') {
+          return aValue > bValue ? 1 : -1;
+        } else {
+          return aValue < bValue ? 1 : -1;
+        }
+      });
+    }
+
+    return filtered;
+  };
+
+  // 전체 선택/해제 (구매된 자재 제외)
+  const handleSelectAll = () => {
+    const filteredMaterials = getFilteredAndSortedMaterials();
+    const selectableMaterials = filteredMaterials.filter(m => !purchasedMaterials.has(m.id));
+    
+    if (selectedMaterials.size === selectableMaterials.length) {
+      setSelectedMaterials(new Set());
+    } else {
+      setSelectedMaterials(new Set(selectableMaterials.map(m => m.id)));
+    }
+  };
+
+  // 개별 선택 (구매된 자재는 선택 불가)
+  const handleMaterialSelect = (materialId) => {
+    if (purchasedMaterials.has(materialId)) {
+      return; // 구매된 자재는 선택 불가
+    }
+    
+    const newSelected = new Set(selectedMaterials);
+    if (newSelected.has(materialId)) {
+      newSelected.delete(materialId);
+    } else {
+      newSelected.add(materialId);
+    }
+    setSelectedMaterials(newSelected);
+  };
+
+  // 엑셀 내보내기
+  const handleExportToExcel = async () => {
+    const selectedMaterialsData = materials.filter(m => selectedMaterials.has(m.id));
+    if (selectedMaterialsData.length === 0) {
+      alert('내보낼 자재를 선택해주세요.');
+      return;
+    }
+
+    const timestamp = new Date().toISOString().slice(0, 19).replace(/:/g, '-');
+    const excelFileName = `PIPE_Materials_${timestamp}.xlsx`;
+
+    // 사용자 요구사항 포함
+    const dataWithRequirements = selectedMaterialsData.map(material => ({
+      ...material,
+      user_requirement: savedRequests[material.id] || userRequirements[material.id] || ''
+    }));
+
+    try {
+      console.log('🔄 파이프 엑셀 내보내기 시작 - 새로운 방식');
+      
+      // 1. 먼저 클라이언트에서 엑셀 파일 생성
+      console.log('📊 엑셀 Blob 생성 중...', dataWithRequirements.length, '개 자료');
+      const excelBlob = await createExcelBlob(dataWithRequirements, excelFileName, {
+        category: 'PIPE',
+        filename: excelFileName,
+        uploadDate: new Date().toLocaleDateString()
+      });
+      console.log('✅ 엑셀 Blob 생성 완료:', excelBlob.size, 'bytes');
+
+      // 2. 구매신청 생성
+      const allMaterialIds = selectedMaterialsData.map(m => m.id);
+      const response = await api.post('/purchase-request/create', {
+        file_id: fileId,
+        job_no: jobNo,
+        category: 'PIPE',
+        material_ids: allMaterialIds,
+        materials_data: dataWithRequirements.map(m => ({
+          material_id: m.id,
+          description: m.original_description,
+          category: m.classified_category,
+          size: m.size_inch || m.size_spec,
+          schedule: m.schedule,
+          material_grade: m.material_grade || m.full_material_grade,
+          quantity: m.quantity,
+          unit: m.unit,
+          user_requirement: userRequirements[m.id] || ''
+        }))
+      });
+
+      if (response.data.success) {
+        console.log(`✅ 구매신청 완료: ${response.data.request_no}, request_id: ${response.data.request_id}`);
+        
+        // 3. 생성된 엑셀 파일을 서버에 업로드
+        console.log('📤 서버에 엑셀 파일 업로드 중...');
+        const formData = new FormData();
+        formData.append('excel_file', excelBlob, excelFileName);
+        formData.append('request_id', response.data.request_id);
+        formData.append('category', 'PIPE');
+        
+        const uploadResponse = await api.post('/purchase-request/upload-excel', formData, {
+          headers: {
+            'Content-Type': 'multipart/form-data',
+          },
+        });
+        console.log('✅ 엑셀 업로드 완료:', uploadResponse.data);
+
+        if (onPurchasedMaterialsUpdate) {
+          onPurchasedMaterialsUpdate(allMaterialIds);
+        }
+      }
+
+      // 4. 클라이언트 다운로드
+      const url = window.URL.createObjectURL(excelBlob);
+      const link = document.createElement('a');
+      link.href = url;
+      link.download = excelFileName;
+      document.body.appendChild(link);
+      link.click();
+      document.body.removeChild(link);
+      window.URL.revokeObjectURL(url);
+
+      alert(`구매신청 ${response.data?.request_no || ''}이 생성되고 엑셀 파일이 저장되었습니다.`);
+    } catch (error) {
+      console.error('엑셀 저장 또는 구매신청 실패:', error);
+      // 실패 시에도 클라이언트 다운로드는 진행
+      exportMaterialsToExcel(dataWithRequirements, excelFileName, {
+        category: 'PIPE',
+        filename: excelFileName,
+        uploadDate: new Date().toLocaleDateString()
+      });
+      alert('엑셀 파일은 다운로드되었지만 구매신청 생성에 실패했습니다.');
+    }
+
+    // 선택 해제
+    setSelectedMaterials(new Set());
+  };
+
+  const filteredMaterials = getFilteredAndSortedMaterials();
+
+  // 필터 헤더 컴포넌트
+  const FilterableHeader = ({ sortKey, filterKey, children }) => (
+    <div className="filterable-header" style={{ position: 'relative' }}>
+      <div style={{ display: 'flex', alignItems: 'center', gap: '8px' }}>
+        <span
+          onClick={() => handleSort(sortKey)}
+          style={{ cursor: 'pointer', flex: 1 }}
+        >
+          {children}
+          {sortConfig.key === sortKey && (
+            <span style={{ marginLeft: '4px' }}>
+              {sortConfig.direction === 'asc' ? '↑' : '↓'}
+            </span>
+          )}
+        </span>
+        <button
+          onClick={() => setShowFilterDropdown(showFilterDropdown === filterKey ? null : filterKey)}
+          style={{
+            background: 'none',
+            border: 'none',
+            cursor: 'pointer',
+            padding: '2px',
+            fontSize: '12px',
+            color: '#6b7280'
+          }}
+        >
+          🔍
+        </button>
+      </div>
+      {showFilterDropdown === filterKey && (
+        <div style={{
+          position: 'absolute',
+          top: '100%',
+          left: 0,
+          background: 'white',
+          border: '1px solid #e2e8f0',
+          borderRadius: '6px',
+          padding: '8px',
+          boxShadow: '0 4px 6px rgba(0, 0, 0, 0.1)',
+          zIndex: 1000,
+          minWidth: '150px'
+        }}>
+          <input
+            type="text"
+            placeholder={`Filter ${children}...`}
+            value={columnFilters[filterKey] || ''}
+            onChange={(e) => setColumnFilters({
+              ...columnFilters,
+              [filterKey]: e.target.value
+            })}
+            style={{
+              width: '100%',
+              padding: '4px 8px',
+              border: '1px solid #d1d5db',
+              borderRadius: '4px',
+              fontSize: '12px'
+            }}
+            autoFocus
+          />
+        </div>
+      )}
+    </div>
+  );
+
+  return (
+    <div style={{ padding: '32px' }}>
+      {/* 헤더 */}
+      <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: '24px' }}>
+        <div>
+          <h3 style={{ 
+            fontSize: '24px', 
+            fontWeight: '700', 
+            color: '#0f172a', 
+            margin: '0 0 8px 0' 
+          }}>
+            Pipe Materials
+          </h3>
+          <p style={{ 
+            fontSize: '14px', 
+            color: '#64748b', 
+            margin: 0 
+          }}>
+            {filteredMaterials.length} items • {selectedMaterials.size} selected
+          </p>
+        </div>
+        
+        <div style={{ display: 'flex', gap: '12px' }}>
+          <button
+            onClick={handleSelectAll}
+            style={{
+              background: 'white',
+              color: '#6b7280',
+              border: '1px solid #d1d5db',
+              borderRadius: '8px',
+              padding: '10px 16px',
+              cursor: 'pointer',
+              fontSize: '14px',
+              fontWeight: '500'
+            }}
+          >
+            {selectedMaterials.size === filteredMaterials.length ? 'Deselect All' : 'Select All'}
+          </button>
+          
+          <button
+            onClick={handleExportToExcel}
+            disabled={selectedMaterials.size === 0}
+            style={{
+              background: selectedMaterials.size > 0 ? 'linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%)' : '#e5e7eb',
+              color: selectedMaterials.size > 0 ? 'white' : '#9ca3af',
+              border: 'none',
+              borderRadius: '8px',
+              padding: '10px 16px',
+              cursor: selectedMaterials.size > 0 ? 'pointer' : 'not-allowed',
+              fontSize: '14px',
+              fontWeight: '500'
+            }}
+          >
+            Export to Excel ({selectedMaterials.size})
+          </button>
+        </div>
+      </div>
+
+      {/* 테이블 */}
+      <div style={{ 
+        background: 'white', 
+        borderRadius: '12px', 
+        overflow: 'auto',
+        boxShadow: '0 1px 3px rgba(0, 0, 0, 0.1)',
+        maxHeight: '600px'
+      }}>
+        {/* 테이블 내용 - 헤더와 본문이 함께 스크롤 */}
+        <div style={{
+          minWidth: '1200px'
+        }}>
+          {/* 헤더 */}
+          <div style={{
+            display: 'grid',
+            gridTemplateColumns: '50px 120px 120px 120px 150px 200px 120px 100px 120px 300px',
+            gap: '16px',
+            padding: '16px',
+            background: '#f8fafc',
+            borderBottom: '1px solid #e2e8f0',
+            fontSize: '14px',
+            fontWeight: '600',
+            color: '#374151',
+            textAlign: 'center'
+          }}>
+          <div>
+            <input
+              type="checkbox"
+              checked={(() => {
+                const filteredMaterials = getFilteredAndSortedMaterials();
+                const selectableMaterials = filteredMaterials.filter(m => !purchasedMaterials.has(m.id));
+                return selectedMaterials.size === selectableMaterials.length && selectableMaterials.length > 0;
+              })()}
+              onChange={handleSelectAll}
+              style={{ cursor: 'pointer' }}
+            />
+          </div>
+          <FilterableHeader 
+            sortKey="type" 
+            filterKey="type"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Type
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="size" 
+            filterKey="size"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Size
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="schedule" 
+            filterKey="schedule"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Schedule
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="grade" 
+            filterKey="grade"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Material Grade
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="userRequirements" 
+            filterKey="userRequirements"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            User Requirements
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="length" 
+            filterKey="length"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Length (MM)
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="quantity" 
+            filterKey="quantity"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Quantity (EA)
+          </FilterableHeader>
+          <div>Purchase Unit</div>
+          <div>Additional Request</div>
+        </div>
+
+          {/* 데이터 행들 */}
+          <div>
+          {filteredMaterials.map((material, index) => {
+            const info = parsePipeInfo(material);
+            const isSelected = selectedMaterials.has(material.id);
+            const isPurchased = purchasedMaterials.has(material.id);
+            
+            return (
+              <div
+                key={material.id}
+                style={{
+                  display: 'grid',
+                  gridTemplateColumns: '50px 120px 120px 120px 150px 200px 120px 100px 120px 300px',
+                  gap: '16px',
+                  padding: '16px',
+                  borderBottom: index < filteredMaterials.length - 1 ? '1px solid #f1f5f9' : 'none',
+                  background: isSelected ? '#eff6ff' : (isPurchased ? '#fef3c7' : 'white'),
+                  transition: 'background 0.15s ease',
+                  textAlign: 'center'
+                }}
+                onMouseEnter={(e) => {
+                  if (!isSelected && !isPurchased) {
+                    e.target.style.background = '#f8fafc';
+                  }
+                }}
+                onMouseLeave={(e) => {
+                  if (!isSelected && !isPurchased) {
+                    e.target.style.background = 'white';
+                  }
+                }}
+              >
+                <div>
+                  <input
+                    type="checkbox"
+                    checked={isSelected}
+                    onChange={() => handleMaterialSelect(material.id)}
+                    disabled={isPurchased}
+                    style={{ 
+                      cursor: isPurchased ? 'not-allowed' : 'pointer',
+                      opacity: isPurchased ? 0.5 : 1
+                    }}
+                  />
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', fontWeight: '500' }}>
+                  {info.type}
+                  {isPurchased && (
+                    <span style={{
+                      marginLeft: '8px',
+                      padding: '2px 6px',
+                      background: '#fbbf24',
+                      color: '#92400e',
+                      borderRadius: '4px',
+                      fontSize: '10px',
+                      fontWeight: '500'
+                    }}>
+                      PURCHASED
+                    </span>
+                  )}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937' }}>
+                  {info.size}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937' }}>
+                  {info.schedule}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937' }}>
+                  {info.grade}
+                </div>
+                <div style={{ 
+                  fontSize: '14px', 
+                  color: '#1f2937',
+                  whiteSpace: 'nowrap',
+                  overflow: 'hidden',
+                  textOverflow: 'ellipsis'
+                }}>
+                  {info.userRequirements}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937' }}>
+                  {Math.round(info.length).toLocaleString()}
+                </div>
+                <div style={{ fontSize: '14px', color: '#1f2937', fontWeight: '600', textAlign: 'right' }}>
+                  {info.quantity}
+                </div>
+                <div style={{ fontSize: '14px', color: '#6b7280', fontWeight: '500' }}>
+                  {info.unit}
+                </div>
+                <div style={{ display: 'flex', gap: '4px', alignItems: 'center' }}>
+                  {!editingRequest[material.id] && savedRequests[material.id] ? (
+                    // 저장된 상태 - 요구사항 표시 + 수정 버튼
+                    <>
+                      <div style={{
+                        flex: 1,
+                        padding: '6px',
+                        border: '1px solid #e5e7eb',
+                        borderRadius: '4px',
+                        fontSize: '11px',
+                        textAlign: 'center',
+                        background: '#f9fafb',
+                        color: '#374151'
+                      }}>
+                        {savedRequests[material.id]}
+                      </div>
+                      <button
+                        onClick={() => handleEditRequest(material.id, savedRequests[material.id])}
+                        disabled={isPurchased}
+                        style={{
+                          padding: '6px 8px',
+                          border: 'none',
+                          borderRadius: '4px',
+                          background: isPurchased ? '#d1d5db' : '#f59e0b',
+                          color: 'white',
+                          fontSize: '10px',
+                          cursor: isPurchased ? 'not-allowed' : 'pointer',
+                          opacity: isPurchased ? 0.5 : 1,
+                          minWidth: '40px'
+                        }}
+                      >
+                        Edit
+                      </button>
+                    </>
+                  ) : (
+                    // 편집 상태 - 입력 필드 + 저장 버튼
+                    <>
+                      <input
+                        type="text"
+                        value={userRequirements[material.id] || ''}
+                        onChange={(e) => setUserRequirements({
+                          ...userRequirements,
+                          [material.id]: e.target.value
+                        })}
+                        placeholder="Enter additional request..."
+                        disabled={isPurchased}
+                        style={{
+                          flex: 1,
+                          padding: '6px',
+                          border: '1px solid #d1d5db',
+                          borderRadius: '4px',
+                          fontSize: '11px',
+                          opacity: isPurchased ? 0.5 : 1,
+                          cursor: isPurchased ? 'not-allowed' : 'text'
+                        }}
+                      />
+                      <button
+                        onClick={() => handleSaveRequest(material.id, userRequirements[material.id] || '')}
+                        disabled={isPurchased || savingRequest[material.id]}
+                        style={{
+                          padding: '6px 8px',
+                          border: 'none',
+                          borderRadius: '4px',
+                          background: isPurchased ? '#d1d5db' : '#10b981',
+                          color: 'white',
+                          fontSize: '10px',
+                          cursor: isPurchased || savingRequest[material.id] ? 'not-allowed' : 'pointer',
+                          opacity: isPurchased ? 0.5 : 1,
+                          minWidth: '40px'
+                        }}
+                      >
+                        {savingRequest[material.id] ? '...' : 'Save'}
+                      </button>
+                    </>
+                  )}
+                </div>
+              </div>
+            );
+          })}
+          </div>
+        </div>
+      </div>
+
+      {filteredMaterials.length === 0 && (
+        <div style={{
+          textAlign: 'center',
+          padding: '60px 20px',
+          color: '#64748b'
+        }}>
+          <div style={{ fontSize: '18px', fontWeight: '600', marginBottom: '8px' }}>
+            No Pipe Materials Found
+          </div>
+          <div style={{ fontSize: '14px' }}>
+            {Object.keys(columnFilters).some(key => columnFilters[key]) 
+              ? 'Try adjusting your filters' 
+              : 'No pipe materials available in this BOM'}
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default PipeMaterialsView;

frontend/src/components/bom/materials/SpecialMaterialsView.jsx

@@ -0,0 +1,628 @@
+import React, { useState } from 'react';
+import { exportMaterialsToExcel, createExcelBlob } from '../../../utils/excelExport';
+import api from '../../../api';
+import { FilterableHeader } from '../shared';
+
+const SpecialMaterialsView = ({ 
+  materials, 
+  selectedMaterials, 
+  setSelectedMaterials,
+  userRequirements,
+  setUserRequirements,
+  purchasedMaterials,
+  onPurchasedMaterialsUpdate,
+  updateMaterial, // 자재 업데이트 함수
+  jobNo,
+  fileId,
+  user,
+  onNavigate
+}) => {
+  const [sortConfig, setSortConfig] = useState({ key: null, direction: 'asc' });
+  const [columnFilters, setColumnFilters] = useState({});
+  const [showFilterDropdown, setShowFilterDropdown] = useState(null);
+  const [savedRequests, setSavedRequests] = useState({}); // 저장된 추가요구사항 상태
+  const [editingRequest, setEditingRequest] = useState({}); // 추가요구사항 편집 모드
+  const [savingRequest, setSavingRequest] = useState({}); // 추가요구사항 저장 중 상태
+
+  // 컴포넌트 마운트 시 저장된 데이터 로드
+  React.useEffect(() => {
+    const loadSavedData = () => {
+      const savedRequestsData = {};
+      
+      materials.forEach(material => {
+        if (material.user_requirement && material.user_requirement.trim()) {
+          savedRequestsData[material.id] = material.user_requirement.trim();
+        }
+      });
+      
+      setSavedRequests(savedRequestsData);
+    };
+
+    if (materials && materials.length > 0) {
+      loadSavedData();
+    } else {
+      setSavedRequests({});
+    }
+  }, [materials]);
+
+  // 추가요구사항 저장 함수
+  const handleSaveRequest = async (materialId, request) => {
+    setSavingRequest(prev => ({ ...prev, [materialId]: true }));
+    try {
+      await api.patch(`/materials/${materialId}/user-requirement`, { 
+        user_requirement: request.trim() 
+      });
+      setSavedRequests(prev => ({ ...prev, [materialId]: request.trim() }));
+      setEditingRequest(prev => ({ ...prev, [materialId]: false }));
+      setUserRequirements(prev => ({ ...prev, [materialId]: '' }));
+      
+      if (updateMaterial) {
+        updateMaterial(materialId, { user_requirement: request.trim() });
+      }
+    } catch (error) {
+      console.error('추가요구사항 저장 실패:', error);
+      alert('추가요구사항 저장에 실패했습니다.');
+    } finally {
+      setSavingRequest(prev => ({ ...prev, [materialId]: false }));
+    }
+  };
+
+  // 추가요구사항 편집 시작
+  const handleEditRequest = (materialId, currentRequest) => {
+    setEditingRequest(prev => ({ ...prev, [materialId]: true }));
+    setUserRequirements(prev => ({ ...prev, [materialId]: currentRequest || '' }));
+  };
+
+  // SPECIAL 자재 정보 파싱
+  const parseSpecialInfo = (material) => {
+    const description = material.original_description || '';
+    const qty = Math.round(material.quantity || 0);
+    
+    // Type 추출 (큰 범주: 우선순위 기반 분류)
+    let type = 'SPECIAL';
+    const descUpper = description.toUpperCase();
+    
+    // 우선순위 1: 주요 장비 타입 (OIL PUMP, COMPRESSOR 등이 FLG보다 우선)
+    if (descUpper.includes('OIL PUMP') || (descUpper.includes('PUMP') && !descUpper.includes('FITTING'))) {
+      type = 'OIL PUMP';
+    } else if (descUpper.includes('COMPRESSOR')) {
+      type = 'COMPRESSOR';
+    } else if (descUpper.includes('VALVE') && !descUpper.includes('FLG')) {
+      type = 'VALVE';
+    } 
+    // 우선순위 2: 구조물/부품 타입
+    else if (descUpper.includes('FLG') || descUpper.includes('FLANGE')) {
+      // FLG가 있어도 주요 장비가 함께 있으면 장비 타입 우선
+      if (descUpper.includes('OIL PUMP') || descUpper.includes('COMPRESSOR')) {
+        if (descUpper.includes('OIL PUMP')) {
+          type = 'OIL PUMP';
+        } else if (descUpper.includes('COMPRESSOR')) {
+          type = 'COMPRESSOR';
+        }
+      } else {
+        type = 'FLANGE';
+      }
+    } else if (descUpper.includes('FITTING')) {
+      type = 'FITTING';
+    } else if (descUpper.includes('PIPE')) {
+      type = 'PIPE';
+    }
+    
+    // 도면 정보 (drawing_name 또는 line_no에서 추출)
+    const drawing = material.drawing_name || material.line_no || '-';
+    
+    // 설명을 항목별로 분리 (콤마, 세미콜론, 파이프 등으로 구분)
+    const parts = description
+      .split(/[,;|\/]/)
+      .map(part => part.trim())
+      .filter(part => part.length > 0);
+    
+    // 최대 4개 항목으로 제한
+    const detail1 = parts[0] || '-';
+    const detail2 = parts[1] || '-';
+    const detail3 = parts[2] || '-';
+    const detail4 = parts[3] || '-';
+    
+    return {
+      type,
+      drawing,
+      detail1,
+      detail2,
+      detail3,
+      detail4,
+      quantity: qty,
+      originalQuantity: qty,
+      purchaseQuantity: qty,
+      isSpecial: true
+    };
+  };
+
+  // 정렬 처리
+  const handleSort = (key) => {
+    let direction = 'asc';
+    if (sortConfig.key === key && sortConfig.direction === 'asc') {
+      direction = 'desc';
+    }
+    setSortConfig({ key, direction });
+  };
+
+  // 필터링 및 정렬된 자료
+  const getFilteredAndSortedMaterials = () => {
+    let filtered = materials.filter(material => {
+      const info = parseSpecialInfo(material);
+      
+      // 컬럼 필터 적용
+      for (const [key, filterValue] of Object.entries(columnFilters)) {
+        if (filterValue && filterValue.trim()) {
+          const materialValue = String(info[key] || '').toLowerCase();
+          const filter = filterValue.toLowerCase();
+          if (!materialValue.includes(filter)) {
+            return false;
+          }
+        }
+      }
+      return true;
+    });
+
+    // 정렬 적용
+    if (sortConfig.key) {
+      filtered.sort((a, b) => {
+        const aInfo = parseSpecialInfo(a);
+        const bInfo = parseSpecialInfo(b);
+        
+        const aValue = aInfo[sortConfig.key];
+        const bValue = bInfo[sortConfig.key];
+        
+        if (aValue < bValue) return sortConfig.direction === 'asc' ? -1 : 1;
+        if (aValue > bValue) return sortConfig.direction === 'asc' ? 1 : -1;
+        return 0;
+      });
+    }
+
+    return filtered;
+  };
+
+  const filteredMaterials = getFilteredAndSortedMaterials();
+
+  // 전체 선택/해제
+  const handleSelectAll = () => {
+    const selectableMaterials = filteredMaterials.filter(material => 
+      !purchasedMaterials.has(material.id)
+    );
+    
+    const allSelected = selectableMaterials.every(material => 
+      selectedMaterials.has(material.id)
+    );
+    
+    if (allSelected) {
+      // 전체 해제
+      const newSelected = new Set(selectedMaterials);
+      selectableMaterials.forEach(material => {
+        newSelected.delete(material.id);
+      });
+      setSelectedMaterials(newSelected);
+    } else {
+      // 전체 선택
+      const newSelected = new Set(selectedMaterials);
+      selectableMaterials.forEach(material => {
+        newSelected.add(material.id);
+      });
+      setSelectedMaterials(newSelected);
+    }
+  };
+
+  // 개별 선택/해제
+  const handleMaterialSelect = (materialId) => {
+    const newSelected = new Set(selectedMaterials);
+    if (newSelected.has(materialId)) {
+      newSelected.delete(materialId);
+    } else {
+      newSelected.add(materialId);
+    }
+    setSelectedMaterials(newSelected);
+  };
+
+  // 엑셀 내보내기
+  const handleExportToExcel = async () => {
+    const selectedMaterialsData = materials.filter(m => selectedMaterials.has(m.id));
+    if (selectedMaterialsData.length === 0) {
+      alert('내보낼 자재를 선택해주세요.');
+      return;
+    }
+
+    const timestamp = new Date().toISOString().slice(0, 19).replace(/:/g, '-');
+    const excelFileName = `SPECIAL_Materials_${timestamp}.xlsx`;
+
+    const dataWithRequirements = selectedMaterialsData.map(material => ({
+      ...material,
+      user_requirement: savedRequests[material.id] || userRequirements[material.id] || ''
+    }));
+
+    try {
+      console.log('🔄 스페셜 엑셀 내보내기 시작 - 새로운 방식');
+      
+      // 1. 먼저 클라이언트에서 엑셀 파일 생성
+      console.log('📊 엑셀 Blob 생성 중...', dataWithRequirements.length, '개 자료');
+      const excelBlob = await createExcelBlob(dataWithRequirements, excelFileName, {
+        category: 'SPECIAL',
+        filename: excelFileName,
+        user: user?.username || 'unknown'
+      });
+      
+      // 2. 구매신청 생성
+      console.log('📝 구매신청 생성 중...');
+      const purchaseResponse = await api.post('/purchase-request/create', {
+        materials_data: dataWithRequirements,
+        file_id: fileId,
+        job_no: jobNo
+      });
+      
+      console.log('✅ 구매신청 생성 완료:', purchaseResponse.data);
+      
+      // 3. 엑셀 파일을 서버에 업로드
+      console.log('📤 엑셀 파일 서버 업로드 중...');
+      const formData = new FormData();
+      formData.append('excel_file', excelBlob, excelFileName);
+      formData.append('request_id', purchaseResponse.data.request_id);
+      formData.append('filename', excelFileName);
+      
+      const uploadResponse = await api.post('/purchase-request/upload-excel', formData, {
+        headers: {
+          'Content-Type': 'multipart/form-data',
+        },
+      });
+      
+      console.log('✅ 엑셀 업로드 완료:', uploadResponse.data);
+      
+      // 4. 구매신청된 자재들을 비활성화
+      const purchasedIds = selectedMaterialsData.map(m => m.id);
+      onPurchasedMaterialsUpdate(purchasedIds);
+      
+      // 5. 선택 해제
+      setSelectedMaterials(new Set());
+      
+      // 6. 클라이언트에서도 다운로드
+      const url = window.URL.createObjectURL(excelBlob);
+      const link = document.createElement('a');
+      link.href = url;
+      link.download = excelFileName;
+      document.body.appendChild(link);
+      link.click();
+      document.body.removeChild(link);
+      window.URL.revokeObjectURL(url);
+      
+      console.log('✅ 스페셜 엑셀 내보내기 완료');
+      alert(`스페셜 자재 엑셀 파일이 생성되었습니다.\n파일명: ${excelFileName}`);
+      
+      // 구매신청 관리 페이지로 이동
+      if (onNavigate) {
+        onNavigate('purchase-requests');
+      }
+      
+    } catch (error) {
+      console.error('❌ 스페셜 엑셀 내보내기 실패:', error);
+      alert('엑셀 내보내기 중 오류가 발생했습니다: ' + (error.response?.data?.detail || error.message));
+    }
+  };
+
+  const allSelected = filteredMaterials.length > 0 && 
+    filteredMaterials.filter(material => !purchasedMaterials.has(material.id))
+      .every(material => selectedMaterials.has(material.id));
+
+  return (
+    <div style={{ padding: '24px' }}>
+      {/* 헤더 */}
+      <div style={{
+        display: 'flex',
+        justifyContent: 'space-between',
+        alignItems: 'center',
+        marginBottom: '24px',
+        padding: '20px',
+        background: 'linear-gradient(135deg, #ec4899 0%, #be185d 100%)',
+        borderRadius: '12px',
+        color: 'white'
+      }}>
+        <div>
+          <h2 style={{ margin: 0, fontSize: '24px', fontWeight: '700' }}>
+            Special Items
+          </h2>
+          <p style={{ margin: '8px 0 0 0', opacity: 0.9 }}>
+            특수 제작 품목 관리 ({filteredMaterials.length}개)
+          </p>
+        </div>
+        <button
+          onClick={handleExportToExcel}
+          disabled={selectedMaterials.size === 0}
+          style={{
+            padding: '12px 24px',
+            background: selectedMaterials.size > 0 ? 'rgba(255,255,255,0.2)' : 'rgba(255,255,255,0.1)',
+            border: '1px solid rgba(255,255,255,0.3)',
+            borderRadius: '8px',
+            color: 'white',
+            fontWeight: '600',
+            cursor: selectedMaterials.size > 0 ? 'pointer' : 'not-allowed',
+            transition: 'all 0.2s ease',
+            backdropFilter: 'blur(10px)'
+          }}
+        >
+          구매신청 ({selectedMaterials.size})
+        </button>
+      </div>
+
+      {/* 테이블 */}
+      <div style={{
+        background: 'white',
+        borderRadius: '12px',
+        overflow: 'auto',
+        maxHeight: '600px',
+        border: '1px solid #e5e7eb',
+        minWidth: '1400px'
+      }}>
+        <div style={{ minWidth: '1400px' }}>
+          {/* 헤더 */}
+          <div style={{
+            display: 'grid',
+            gridTemplateColumns: '50px 150px 200px 200px 200px 200px 200px 250px 150px',
+            gap: '16px',
+            padding: '16px',
+            background: '#f8fafc',
+            borderBottom: '2px solid #e2e8f0',
+            fontWeight: '600',
+            fontSize: '14px',
+            color: '#1f2937',
+            textAlign: 'center'
+          }}>
+            <div>
+              <input
+                type="checkbox"
+                checked={allSelected}
+                onChange={handleSelectAll}
+                style={{ cursor: 'pointer' }}
+              />
+            </div>
+            <FilterableHeader 
+              sortKey="type" 
+              filterKey="type"
+              sortConfig={sortConfig}
+              onSort={handleSort}
+              columnFilters={columnFilters}
+              onFilterChange={setColumnFilters}
+              showFilterDropdown={showFilterDropdown}
+              setShowFilterDropdown={setShowFilterDropdown}
+            >
+              Type
+            </FilterableHeader>
+            <FilterableHeader 
+              sortKey="drawing" 
+              filterKey="drawing"
+              sortConfig={sortConfig}
+              onSort={handleSort}
+              columnFilters={columnFilters}
+              onFilterChange={setColumnFilters}
+              showFilterDropdown={showFilterDropdown}
+              setShowFilterDropdown={setShowFilterDropdown}
+            >
+              Drawing
+            </FilterableHeader>
+            <FilterableHeader 
+              sortKey="detail1" 
+              filterKey="detail1"
+              sortConfig={sortConfig}
+              onSort={handleSort}
+              columnFilters={columnFilters}
+              onFilterChange={setColumnFilters}
+              showFilterDropdown={showFilterDropdown}
+              setShowFilterDropdown={setShowFilterDropdown}
+            >
+              Detail 1
+            </FilterableHeader>
+            <FilterableHeader 
+              sortKey="detail2" 
+              filterKey="detail2"
+              sortConfig={sortConfig}
+              onSort={handleSort}
+              columnFilters={columnFilters}
+              onFilterChange={setColumnFilters}
+              showFilterDropdown={showFilterDropdown}
+              setShowFilterDropdown={setShowFilterDropdown}
+            >
+              Detail 2
+            </FilterableHeader>
+            <FilterableHeader 
+              sortKey="detail3" 
+              filterKey="detail3"
+              sortConfig={sortConfig}
+              onSort={handleSort}
+              columnFilters={columnFilters}
+              onFilterChange={setColumnFilters}
+              showFilterDropdown={showFilterDropdown}
+              setShowFilterDropdown={setShowFilterDropdown}
+            >
+              Detail 3
+            </FilterableHeader>
+            <FilterableHeader 
+              sortKey="detail4" 
+              filterKey="detail4"
+              sortConfig={sortConfig}
+              onSort={handleSort}
+              columnFilters={columnFilters}
+              onFilterChange={setColumnFilters}
+              showFilterDropdown={showFilterDropdown}
+              setShowFilterDropdown={setShowFilterDropdown}
+            >
+              Detail 4
+            </FilterableHeader>
+            <div>Additional Request</div>
+            <div>Purchase Quantity</div>
+          </div>
+
+          {/* 데이터 행들 */}
+          <div>
+            {filteredMaterials.map((material, index) => {
+              const info = parseSpecialInfo(material);
+              const isSelected = selectedMaterials.has(material.id);
+              const isPurchased = purchasedMaterials.has(material.id);
+              
+              return (
+                <div
+                  key={material.id}
+                  style={{
+                    display: 'grid',
+                    gridTemplateColumns: '50px 150px 200px 200px 200px 200px 200px 250px 150px',
+                    gap: '16px',
+                    padding: '16px',
+                    borderBottom: index < filteredMaterials.length - 1 ? '1px solid #f1f5f9' : 'none',
+                    background: isSelected ? '#eff6ff' : (isPurchased ? '#fef3c7' : 'white'),
+                    transition: 'background 0.15s ease',
+                    textAlign: 'center'
+                  }}
+                  onMouseEnter={(e) => {
+                    if (!isSelected && !isPurchased) {
+                      e.target.style.background = '#f8fafc';
+                    }
+                  }}
+                  onMouseLeave={(e) => {
+                    if (!isSelected && !isPurchased) {
+                      e.target.style.background = 'white';
+                    }
+                  }}
+                >
+                  <div>
+                    <input
+                      type="checkbox"
+                      checked={isSelected}
+                      onChange={() => handleMaterialSelect(material.id)}
+                      disabled={isPurchased}
+                      style={{ 
+                        cursor: isPurchased ? 'not-allowed' : 'pointer',
+                        opacity: isPurchased ? 0.5 : 1
+                      }}
+                    />
+                  </div>
+                  <div style={{ fontSize: '14px', color: '#1f2937', fontWeight: '500' }}>
+                    {info.type}
+                    {isPurchased && (
+                      <span style={{
+                        marginLeft: '8px',
+                        padding: '2px 6px',
+                        background: '#fbbf24',
+                        color: '#92400e',
+                        borderRadius: '4px',
+                        fontSize: '10px',
+                        fontWeight: '600'
+                      }}>
+                        PURCHASED
+                      </span>
+                    )}
+                  </div>
+                  <div style={{ fontSize: '14px', color: '#1f2937' }}>{info.drawing}</div>
+                  <div style={{ fontSize: '14px', color: '#1f2937' }}>{info.detail1}</div>
+                  <div style={{ fontSize: '14px', color: '#1f2937' }}>{info.detail2}</div>
+                  <div style={{ fontSize: '14px', color: '#1f2937' }}>{info.detail3}</div>
+                  <div style={{ fontSize: '14px', color: '#1f2937' }}>{info.detail4}</div>
+                  <div style={{ display: 'flex', gap: '4px', alignItems: 'center' }}>
+                    {!editingRequest[material.id] && savedRequests[material.id] ? (
+                      // 저장된 상태 - 요구사항 표시 + 수정 버튼
+                      <>
+                        <div style={{
+                          flex: 1,
+                          padding: '6px 8px',
+                          border: '1px solid #e5e7eb',
+                          borderRadius: '4px',
+                          fontSize: '12px',
+                          textAlign: 'center',
+                          background: '#f9fafb',
+                          color: '#374151'
+                        }}>
+                          {savedRequests[material.id]}
+                        </div>
+                        <button
+                          onClick={() => handleEditRequest(material.id, savedRequests[material.id])}
+                          disabled={isPurchased}
+                          style={{
+                            padding: '6px 8px',
+                            border: 'none',
+                            borderRadius: '4px',
+                            background: isPurchased ? '#d1d5db' : '#f59e0b',
+                            color: 'white',
+                            fontSize: '10px',
+                            cursor: isPurchased ? 'not-allowed' : 'pointer',
+                            opacity: isPurchased ? 0.5 : 1,
+                            minWidth: '40px'
+                          }}
+                        >
+                          Edit
+                        </button>
+                      </>
+                    ) : (
+                      // 편집 상태 - 입력 필드 + 저장 버튼
+                      <>
+                        <input
+                          type="text"
+                          value={userRequirements[material.id] || ''}
+                          onChange={(e) => setUserRequirements({
+                            ...userRequirements,
+                            [material.id]: e.target.value
+                          })}
+                          placeholder="Enter additional request..."
+                          disabled={isPurchased}
+                          style={{
+                            flex: 1,
+                            padding: '6px 8px',
+                            border: '1px solid #d1d5db',
+                            borderRadius: '4px',
+                            fontSize: '12px',
+                            opacity: isPurchased ? 0.5 : 1,
+                            cursor: isPurchased ? 'not-allowed' : 'text'
+                          }}
+                        />
+                        <button
+                          onClick={() => handleSaveRequest(material.id, userRequirements[material.id] || '')}
+                          disabled={isPurchased || savingRequest[material.id]}
+                          style={{
+                            padding: '6px 8px',
+                            border: 'none',
+                            borderRadius: '4px',
+                            background: isPurchased ? '#d1d5db' : '#10b981',
+                            color: 'white',
+                            fontSize: '10px',
+                            cursor: isPurchased || savingRequest[material.id] ? 'not-allowed' : 'pointer',
+                            opacity: isPurchased ? 0.5 : 1,
+                            minWidth: '40px'
+                          }}
+                        >
+                          {savingRequest[material.id] ? '...' : 'Save'}
+                        </button>
+                      </>
+                    )}
+                  </div>
+                  <div style={{ fontSize: '14px', color: '#1f2937', textAlign: 'center' }}>
+                    {info.purchaseQuantity}
+                  </div>
+                </div>
+              );
+            })}
+          </div>
+        </div>
+      </div>
+
+      {filteredMaterials.length === 0 && (
+        <div style={{
+          textAlign: 'center',
+          padding: '60px 20px',
+          color: '#6b7280',
+          background: 'white',
+          borderRadius: '12px',
+          border: '1px solid #e5e7eb',
+          marginTop: '20px'
+        }}>
+          <div style={{ fontSize: '48px', marginBottom: '16px' }}>📋</div>
+          <h3 style={{ margin: '0 0 8px 0', color: '#374151' }}>스페셜 자재가 없습니다</h3>
+          <p style={{ margin: 0 }}>특수 제작이 필요한 자재가 발견되면 여기에 표시됩니다.</p>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default SpecialMaterialsView;

frontend/src/components/bom/materials/SupportMaterialsView.jsx

@@ -0,0 +1,687 @@
+import React, { useState } from 'react';
+import { exportMaterialsToExcel, createExcelBlob } from '../../../utils/excelExport';
+import api from '../../../api';
+import { FilterableHeader } from '../shared';
+
+const SupportMaterialsView = ({ 
+  materials, 
+  selectedMaterials, 
+  setSelectedMaterials,
+  userRequirements,
+  setUserRequirements,
+  purchasedMaterials,
+  onPurchasedMaterialsUpdate,
+  updateMaterial, // 자재 업데이트 함수
+  jobNo,
+  fileId,
+  user 
+}) => {
+  const [sortConfig, setSortConfig] = useState({ key: null, direction: 'asc' });
+  const [columnFilters, setColumnFilters] = useState({});
+  const [showFilterDropdown, setShowFilterDropdown] = useState(null);
+  const [savedRequests, setSavedRequests] = useState({}); // 저장된 추가요구사항 상태
+  const [editingRequest, setEditingRequest] = useState({}); // 추가요구사항 편집 모드
+  const [savingRequest, setSavingRequest] = useState({}); // 추가요구사항 저장 중 상태
+
+  // 컴포넌트 마운트 시 저장된 데이터 로드
+  React.useEffect(() => {
+    const loadSavedData = () => {
+      const savedRequestsData = {};
+      
+      materials.forEach(material => {
+        if (material.user_requirement && material.user_requirement.trim()) {
+          savedRequestsData[material.id] = material.user_requirement.trim();
+        }
+      });
+      
+      setSavedRequests(savedRequestsData);
+    };
+
+    if (materials && materials.length > 0) {
+      loadSavedData();
+    } else {
+      setSavedRequests({});
+    }
+  }, [materials]);
+
+  // 추가요구사항 저장 함수
+  const handleSaveRequest = async (materialId, request) => {
+    setSavingRequest(prev => ({ ...prev, [materialId]: true }));
+    try {
+      await api.patch(`/materials/${materialId}/user-requirement`, { 
+        user_requirement: request.trim() 
+      });
+      setSavedRequests(prev => ({ ...prev, [materialId]: request.trim() }));
+      setEditingRequest(prev => ({ ...prev, [materialId]: false }));
+      setUserRequirements(prev => ({ ...prev, [materialId]: '' }));
+      
+      if (updateMaterial) {
+        updateMaterial(materialId, { user_requirement: request.trim() });
+      }
+    } catch (error) {
+      console.error('추가요구사항 저장 실패:', error);
+      alert('추가요구사항 저장에 실패했습니다.');
+    } finally {
+      setSavingRequest(prev => ({ ...prev, [materialId]: false }));
+    }
+  };
+
+  // 추가요구사항 편집 시작
+  const handleEditRequest = (materialId, currentRequest) => {
+    setEditingRequest(prev => ({ ...prev, [materialId]: true }));
+    setUserRequirements(prev => ({ ...prev, [materialId]: currentRequest || '' }));
+  };
+
+  const parseSupportInfo = (material) => {
+    const desc = material.original_description || '';
+    const descUpper = desc.toUpperCase();
+    
+    // 서포트 타입 분류 (백엔드 분류기와 동일한 로직)
+    let supportType = 'U-BOLT'; // 기본값
+    
+    if (descUpper.includes('URETHANE') || descUpper.includes('BLOCK SHOE') || descUpper.includes('우레탄')) {
+      supportType = 'URETHANE BLOCK SHOE';
+    } else if (descUpper.includes('CLAMP') || descUpper.includes('클램프')) {
+      // 클램프 타입 상세 분류 (CL-1, CL-2, CL-3 등)
+      const clampMatch = desc.match(/CL[-\s]*(\d+)/i);
+      if (clampMatch) {
+        supportType = `CLAMP CL-${clampMatch[1]}`;
+      } else {
+        supportType = 'CLAMP CL-1'; // 기본값
+      }
+    } else if (descUpper.includes('HANGER') || descUpper.includes('행거')) {
+      supportType = 'HANGER';
+    } else if (descUpper.includes('SPRING') || descUpper.includes('스프링')) {
+      supportType = 'SPRING HANGER';
+    } else if (descUpper.includes('GUIDE') || descUpper.includes('가이드')) {
+      supportType = 'GUIDE';
+    } else if (descUpper.includes('ANCHOR') || descUpper.includes('앵커')) {
+      supportType = 'ANCHOR';
+    }
+    
+    // User Requirements 추출 (분류기에서 제공된 것 우선)
+    const userRequirements = material.user_requirements || [];
+    
+    // 구매 수량 계산 (서포트는 취합된 숫자 그대로)
+    const qty = Math.round(material.quantity || 0);
+    const purchaseQty = qty;
+    
+    // Material Grade 처리 - 우레탄 블럭슈의 경우 두께 정보 포함
+    let materialGrade = material.full_material_grade || material.material_grade || '-';
+    
+    if (supportType === 'URETHANE BLOCK SHOE') {
+      // 두께 정보 추출 (40t, 27t 등 - 여기서 t는 thickness를 의미)
+      const thicknessMatch = desc.match(/(\d+)\s*[tT]/);
+      if (thicknessMatch) {
+        const thickness = `${thicknessMatch[1]}t`;
+        if (materialGrade === '-' || !materialGrade) {
+          materialGrade = thickness;
+        } else if (!materialGrade.includes(thickness)) {
+          materialGrade = `${materialGrade} ${thickness}`;
+        }
+      }
+    }
+    
+    return {
+      type: supportType,
+      size: material.main_nom || material.size_inch || material.size_spec || '-',
+      grade: materialGrade,
+      userRequirements: userRequirements.join(', ') || '-',
+      additionalReq: '-',
+      purchaseQuantity: `${purchaseQty} EA`,
+      originalQuantity: qty,
+      isSupport: true
+    };
+  };
+
+  // 동일한 서포트 항목 합산
+  const consolidateSupportMaterials = (materials) => {
+    const consolidated = {};
+    
+    materials.forEach(material => {
+      const info = parseSupportInfo(material);
+      const key = `${info.type}|${info.size}|${info.grade}`;
+      
+      if (!consolidated[key]) {
+        consolidated[key] = {
+          ...material,
+          // Material Grade 정보를 parsedInfo에서 가져와서 설정
+          material_grade: info.grade,
+          full_material_grade: info.grade,
+          consolidatedQuantity: info.originalQuantity,
+          consolidatedIds: [material.id],
+          parsedInfo: info
+        };
+      } else {
+        consolidated[key].consolidatedQuantity += info.originalQuantity;
+        consolidated[key].consolidatedIds.push(material.id);
+      }
+    });
+    
+    // 합산된 수량으로 구매 수량 재계산 (서포트는 취합된 숫자 그대로)
+    return Object.values(consolidated).map(item => {
+      const purchaseQty = item.consolidatedQuantity;
+      
+      return {
+        ...item,
+        parsedInfo: {
+          ...item.parsedInfo,
+          originalQuantity: item.consolidatedQuantity,
+          purchaseQuantity: `${purchaseQty} EA`
+        }
+      };
+    });
+  };
+
+  // 정렬 처리
+  const handleSort = (key) => {
+    let direction = 'asc';
+    if (sortConfig.key === key && sortConfig.direction === 'asc') {
+      direction = 'desc';
+    }
+    setSortConfig({ key, direction });
+  };
+
+  // 필터링된 및 정렬된 자재 목록
+  const getFilteredAndSortedMaterials = () => {
+    // 먼저 합산 처리
+    let consolidated = consolidateSupportMaterials(materials);
+    
+    // 필터링
+    let filtered = consolidated.filter(material => {
+      return Object.entries(columnFilters).every(([key, filterValue]) => {
+        if (!filterValue) return true;
+        const info = material.parsedInfo;
+        const value = info[key]?.toString().toLowerCase() || '';
+        return value.includes(filterValue.toLowerCase());
+      });
+    });
+
+    // 정렬
+    if (sortConfig && sortConfig.key) {
+      filtered.sort((a, b) => {
+        const aInfo = a.parsedInfo;
+        const bInfo = b.parsedInfo;
+        
+        if (!aInfo || !bInfo) return 0;
+        
+        const aValue = aInfo[sortConfig.key];
+        const bValue = bInfo[sortConfig.key];
+        
+        // 값이 없는 경우 처리
+        if (aValue === undefined && bValue === undefined) return 0;
+        if (aValue === undefined) return 1;
+        if (bValue === undefined) return -1;
+        
+        // 숫자인 경우 숫자로 비교
+        if (typeof aValue === 'number' && typeof bValue === 'number') {
+          return sortConfig.direction === 'asc' ? aValue - bValue : bValue - aValue;
+        }
+        
+        // 문자열로 비교
+        const aStr = String(aValue).toLowerCase();
+        const bStr = String(bValue).toLowerCase();
+        
+        if (sortConfig.direction === 'asc') {
+          return aStr.localeCompare(bStr);
+        } else {
+          return bStr.localeCompare(aStr);
+        }
+      });
+    }
+
+    return filtered;
+  };
+
+  // 전체 선택/해제 (구매신청된 자재 제외)
+  const handleSelectAll = () => {
+    const filteredMaterials = getFilteredAndSortedMaterials();
+    const selectableMaterials = filteredMaterials.filter(material => 
+      !material.consolidatedIds.some(id => purchasedMaterials.has(id))
+    );
+    
+    if (selectedMaterials.size === selectableMaterials.flatMap(m => m.consolidatedIds).length) {
+      setSelectedMaterials(new Set());
+    } else {
+      const allIds = selectableMaterials.flatMap(m => m.consolidatedIds);
+      setSelectedMaterials(new Set(allIds));
+    }
+  };
+
+  // 개별 선택 (구매신청된 자재는 선택 불가)
+  const handleMaterialSelect = (consolidatedMaterial) => {
+    const hasAnyPurchased = consolidatedMaterial.consolidatedIds.some(id => purchasedMaterials.has(id));
+    if (hasAnyPurchased) {
+      return; // 구매신청된 자재가 포함된 경우 선택 불가
+    }
+    
+    const newSelected = new Set(selectedMaterials);
+    const allSelected = consolidatedMaterial.consolidatedIds.every(id => newSelected.has(id));
+    
+    if (allSelected) {
+      // 모두 선택된 경우 모두 해제
+      consolidatedMaterial.consolidatedIds.forEach(id => newSelected.delete(id));
+    } else {
+      // 일부 또는 전체 미선택인 경우 모두 선택
+      consolidatedMaterial.consolidatedIds.forEach(id => newSelected.add(id));
+    }
+    setSelectedMaterials(newSelected);
+  };
+
+  // 엑셀 내보내기
+  const handleExportToExcel = async () => {
+    // 선택된 합산 자료 가져오기
+    const filteredMaterials = getFilteredAndSortedMaterials();
+    const selectedConsolidatedMaterials = filteredMaterials.filter(consolidatedMaterial => 
+      consolidatedMaterial.consolidatedIds.some(id => selectedMaterials.has(id))
+    );
+    
+    if (selectedConsolidatedMaterials.length === 0) {
+      alert('내보낼 자재를 선택해주세요.');
+      return;
+    }
+
+    const timestamp = new Date().toISOString().slice(0, 19).replace(/:/g, '-');
+    const excelFileName = `SUPPORT_Materials_${timestamp}.xlsx`;
+
+    // 합산된 자료를 엑셀 형태로 변환
+    const dataWithRequirements = selectedConsolidatedMaterials.map(consolidatedMaterial => ({
+      ...consolidatedMaterial,
+      // 합산된 수량으로 덮어쓰기
+      quantity: consolidatedMaterial.consolidatedQuantity,
+      // 사용자 요구사항은 대표 ID 기준 (저장된 데이터 우선)
+      user_requirement: savedRequests[consolidatedMaterial.id] || userRequirements[consolidatedMaterial.id] || ''
+    }));
+
+    try {
+      console.log('🔄 서포트 엑셀 내보내기 시작 - 새로운 방식');
+      
+      // 1. 먼저 클라이언트에서 엑셀 파일 생성
+      console.log('📊 엑셀 Blob 생성 중...', dataWithRequirements.length, '개 자료');
+      const excelBlob = await createExcelBlob(dataWithRequirements, excelFileName, {
+        category: 'SUPPORT',
+        filename: excelFileName,
+        uploadDate: new Date().toLocaleDateString()
+      });
+      console.log('✅ 엑셀 Blob 생성 완료:', excelBlob.size, 'bytes');
+
+      // 2. 구매신청 생성
+      const allMaterialIds = selectedConsolidatedMaterials.flatMap(cm => cm.consolidatedIds);
+      const response = await api.post('/purchase-request/create', {
+        file_id: fileId,
+        job_no: jobNo,
+        category: 'SUPPORT',
+        material_ids: allMaterialIds,
+        materials_data: dataWithRequirements.map(m => ({
+          material_id: m.id,
+          description: m.original_description,
+          category: m.classified_category,
+          size: m.size_inch || m.size_spec,
+          schedule: m.schedule,
+          material_grade: m.material_grade || m.full_material_grade,
+          quantity: m.quantity, // 이미 합산된 수량
+          unit: m.unit,
+          user_requirement: userRequirements[m.id] || ''
+        }))
+      });
+
+      if (response.data.success) {
+        console.log(`✅ 구매신청 완료: ${response.data.request_no}, request_id: ${response.data.request_id}`);
+        
+        // 3. 엑셀 파일을 서버에 업로드
+        const formData = new FormData();
+        formData.append('excel_file', excelBlob, excelFileName);
+        formData.append('request_id', response.data.request_id);
+        formData.append('category', 'SUPPORT');
+        
+        console.log('📤 엑셀 파일 서버 업로드 중...');
+        await api.post('/purchase-request/upload-excel', formData, {
+          headers: { 'Content-Type': 'multipart/form-data' }
+        });
+        console.log('✅ 엑셀 파일 서버 업로드 완료');
+
+        // 4. 구매된 자재 목록 업데이트 (비활성화)
+        onPurchasedMaterialsUpdate(allMaterialIds);
+        console.log('✅ 구매된 자재 목록 업데이트 완료');
+
+        // 5. 클라이언트에 파일 다운로드
+        const url = window.URL.createObjectURL(excelBlob);
+        const link = document.createElement('a');
+        link.href = url;
+        link.download = excelFileName;
+        document.body.appendChild(link);
+        link.click();
+        document.body.removeChild(link);
+        window.URL.revokeObjectURL(url);
+
+        alert(`구매신청 ${response.data?.request_no || ''}이 생성되고 엑셀 파일이 저장되었습니다.`);
+      } else {
+        throw new Error(response.data?.message || '구매신청 생성 실패');
+      }
+    } catch (error) {
+      console.error('엑셀 저장 또는 구매신청 실패:', error);
+      // 실패 시에도 클라이언트 다운로드는 진행
+      exportMaterialsToExcel(dataWithRequirements, excelFileName, {
+        category: 'SUPPORT',
+        filename: excelFileName,
+        uploadDate: new Date().toLocaleDateString()
+      });
+      alert('엑셀 파일은 다운로드되었지만 구매신청 생성에 실패했습니다.');
+    }
+
+    // 선택 해제
+    setSelectedMaterials(new Set());
+  };
+
+  const filteredMaterials = getFilteredAndSortedMaterials();
+
+  return (
+    <div style={{ padding: '32px' }}>
+      {/* 헤더 */}
+      <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: '24px' }}>
+        <div>
+          <h3 style={{ 
+            fontSize: '24px', 
+            fontWeight: '700', 
+            color: '#0f172a', 
+            margin: '0 0 8px 0' 
+          }}>
+            Support Materials
+          </h3>
+          <p style={{ 
+            fontSize: '14px', 
+            color: '#64748b', 
+            margin: 0 
+          }}>
+            {filteredMaterials.length} items • {selectedMaterials.size} selected
+          </p>
+        </div>
+        
+        <div style={{ display: 'flex', gap: '12px' }}>
+          <button
+            onClick={handleSelectAll}
+            style={{
+              background: 'white',
+              color: '#6b7280',
+              border: '1px solid #d1d5db',
+              borderRadius: '8px',
+              padding: '10px 16px',
+              cursor: 'pointer',
+              fontSize: '14px',
+              fontWeight: '500'
+            }}
+          >
+            {selectedMaterials.size === filteredMaterials.length ? 'Deselect All' : 'Select All'}
+          </button>
+          
+          <button
+            onClick={handleExportToExcel}
+            disabled={selectedMaterials.size === 0}
+            style={{
+              background: selectedMaterials.size > 0 ? 'linear-gradient(135deg, #f97316 0%, #ea580c 100%)' : '#e5e7eb',
+              color: selectedMaterials.size > 0 ? 'white' : '#9ca3af',
+              border: 'none',
+              borderRadius: '8px',
+              padding: '10px 16px',
+              cursor: selectedMaterials.size > 0 ? 'pointer' : 'not-allowed',
+              fontSize: '14px',
+              fontWeight: '500'
+            }}
+          >
+            Export to Excel ({selectedMaterials.size})
+          </button>
+        </div>
+      </div>
+
+      {/* 테이블 */}
+      <div style={{ 
+        background: 'white', 
+        borderRadius: '12px', 
+        overflow: 'auto',
+        boxShadow: '0 1px 3px rgba(0, 0, 0, 0.1)',
+        maxHeight: '600px'
+      }}>
+        <div style={{ minWidth: '1200px' }}>
+          {/* 헤더 */}
+          <div style={{
+            display: 'grid',
+            gridTemplateColumns: '50px 200px 120px 150px 180px 200px 200px',
+            gap: '16px',
+            padding: '16px',
+            background: '#f8fafc',
+            borderBottom: '1px solid #e2e8f0',
+            fontSize: '14px',
+            fontWeight: '600',
+            color: '#374151',
+            textAlign: 'center'
+          }}>
+          <div>
+            <input
+              type="checkbox"
+              checked={(() => {
+                const selectableMaterials = filteredMaterials.filter(material => 
+                  !material.consolidatedIds.some(id => purchasedMaterials.has(id))
+                );
+                return selectedMaterials.size === selectableMaterials.flatMap(m => m.consolidatedIds).length && selectableMaterials.length > 0;
+              })()}
+              onChange={handleSelectAll}
+              style={{ cursor: 'pointer' }}
+            />
+          </div>
+          <FilterableHeader 
+            sortKey="type" 
+            filterKey="type"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Type
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="size" 
+            filterKey="size"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Size
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="grade" 
+            filterKey="grade"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Material Grade
+          </FilterableHeader>
+          <div>User Requirements</div>
+          <div>Additional Request</div>
+          <FilterableHeader 
+            sortKey="purchaseQuantity" 
+            filterKey="purchaseQuantity"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Purchase Quantity
+          </FilterableHeader>
+        </div>
+
+        {/* 데이터 행들 */}
+        {filteredMaterials.map((consolidatedMaterial, index) => {
+          const info = consolidatedMaterial.parsedInfo;
+          const hasAnyPurchased = consolidatedMaterial.consolidatedIds.some(id => purchasedMaterials.has(id));
+          const allSelected = consolidatedMaterial.consolidatedIds.every(id => selectedMaterials.has(id));
+          
+          return (
+            <div
+              key={`consolidated-${index}`}
+              style={{
+                display: 'grid',
+                gridTemplateColumns: '50px 200px 120px 150px 180px 200px 200px',
+                gap: '16px',
+                padding: '16px',
+                borderBottom: index < filteredMaterials.length - 1 ? '1px solid #f1f5f9' : 'none',
+                background: allSelected ? '#eff6ff' : (hasAnyPurchased ? '#fef3c7' : 'white'),
+                transition: 'background 0.15s ease',
+                textAlign: 'center'
+              }}
+              onMouseEnter={(e) => {
+                if (!allSelected && !hasAnyPurchased) {
+                  e.target.style.background = '#f8fafc';
+                }
+              }}
+              onMouseLeave={(e) => {
+                if (!allSelected && !hasAnyPurchased) {
+                  e.target.style.background = 'white';
+                }
+              }}
+            >
+              <div>
+                <input
+                  type="checkbox"
+                  checked={allSelected}
+                  onChange={() => handleMaterialSelect(consolidatedMaterial)}
+                  disabled={hasAnyPurchased}
+                  style={{ 
+                    cursor: hasAnyPurchased ? 'not-allowed' : 'pointer',
+                    opacity: hasAnyPurchased ? 0.5 : 1
+                  }}
+                />
+              </div>
+              <div style={{ fontSize: '14px', color: '#1f2937', fontWeight: '500' }}>
+                {info.type}
+                {hasAnyPurchased && (
+                  <span style={{
+                    marginLeft: '8px',
+                    padding: '2px 6px',
+                    background: '#fbbf24',
+                    color: '#92400e',
+                    borderRadius: '4px',
+                    fontSize: '10px',
+                    fontWeight: '500'
+                  }}>
+                    PURCHASED
+                  </span>
+                )}
+              </div>
+              <div style={{ fontSize: '14px', color: '#1f2937' }}>{info.size}</div>
+              <div style={{ fontSize: '14px', color: '#1f2937' }}>{info.grade}</div>
+              <div style={{ fontSize: '14px', color: '#1f2937' }}>{info.userRequirements}</div>
+              <div style={{ display: 'flex', gap: '4px', alignItems: 'center' }}>
+                {!editingRequest[consolidatedMaterial.id] && savedRequests[consolidatedMaterial.id] ? (
+                  // 저장된 상태 - 요구사항 표시 + 수정 버튼
+                  <>
+                    <div style={{
+                      flex: 1,
+                      padding: '8px',
+                      border: '1px solid #e5e7eb',
+                      borderRadius: '4px',
+                      fontSize: '12px',
+                      textAlign: 'center',
+                      background: '#f9fafb',
+                      color: '#374151'
+                    }}>
+                      {savedRequests[consolidatedMaterial.id]}
+                    </div>
+                    <button
+                      onClick={() => handleEditRequest(consolidatedMaterial.id, savedRequests[consolidatedMaterial.id])}
+                      disabled={hasAnyPurchased}
+                      style={{
+                        padding: '6px 8px',
+                        border: 'none',
+                        borderRadius: '4px',
+                        background: hasAnyPurchased ? '#d1d5db' : '#f59e0b',
+                        color: 'white',
+                        fontSize: '10px',
+                        cursor: hasAnyPurchased ? 'not-allowed' : 'pointer',
+                        opacity: hasAnyPurchased ? 0.5 : 1,
+                        minWidth: '40px'
+                      }}
+                    >
+                      Edit
+                    </button>
+                  </>
+                ) : (
+                  // 편집 상태 - 입력 필드 + 저장 버튼
+                  <>
+                    <input
+                      type="text"
+                      value={userRequirements[consolidatedMaterial.id] || ''}
+                      onChange={(e) => setUserRequirements({
+                        ...userRequirements,
+                        [consolidatedMaterial.id]: e.target.value
+                      })}
+                      placeholder="Enter additional request..."
+                      disabled={hasAnyPurchased}
+                      style={{
+                        flex: 1,
+                        padding: '8px',
+                        border: '1px solid #d1d5db',
+                        borderRadius: '4px',
+                        fontSize: '12px',
+                        opacity: hasAnyPurchased ? 0.5 : 1,
+                        cursor: hasAnyPurchased ? 'not-allowed' : 'text'
+                      }}
+                    />
+                    <button
+                      onClick={() => handleSaveRequest(consolidatedMaterial.id, userRequirements[consolidatedMaterial.id] || '')}
+                      disabled={hasAnyPurchased || savingRequest[consolidatedMaterial.id]}
+                      style={{
+                        padding: '6px 8px',
+                        border: 'none',
+                        borderRadius: '4px',
+                        background: hasAnyPurchased ? '#d1d5db' : '#10b981',
+                        color: 'white',
+                        fontSize: '10px',
+                        cursor: hasAnyPurchased || savingRequest[consolidatedMaterial.id] ? 'not-allowed' : 'pointer',
+                        opacity: hasAnyPurchased ? 0.5 : 1,
+                        minWidth: '40px'
+                      }}
+                    >
+                      {savingRequest[consolidatedMaterial.id] ? '...' : 'Save'}
+                    </button>
+                  </>
+                )}
+              </div>
+              <div style={{ fontSize: '14px', color: '#1f2937' }}>{info.purchaseQuantity}</div>
+            </div>
+          );
+          })}
+        </div>
+      </div>
+
+      {filteredMaterials.length === 0 && (
+        <div style={{
+          textAlign: 'center',
+          padding: '60px 20px',
+          color: '#64748b'
+        }}>
+          <div style={{ fontSize: '18px', fontWeight: '600', marginBottom: '8px' }}>
+            No Support Materials Found
+          </div>
+          <div style={{ fontSize: '14px' }}>
+            {Object.keys(columnFilters).some(key => columnFilters[key]) 
+              ? 'Try adjusting your filters' 
+              : 'No support materials available in this BOM'}
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default SupportMaterialsView;

frontend/src/components/bom/materials/UnclassifiedMaterialsView.jsx

@@ -0,0 +1,561 @@
+import React, { useState } from 'react';
+import { exportMaterialsToExcel, createExcelBlob } from '../../../utils/excelExport';
+import api from '../../../api';
+import { FilterableHeader } from '../shared';
+
+const UnclassifiedMaterialsView = ({ 
+  materials, 
+  selectedMaterials, 
+  setSelectedMaterials,
+  userRequirements,
+  setUserRequirements,
+  purchasedMaterials,
+  onPurchasedMaterialsUpdate,
+  updateMaterial, // 자재 업데이트 함수
+  jobNo,
+  fileId,
+  user,
+  onNavigate
+}) => {
+  const [sortConfig, setSortConfig] = useState({ key: null, direction: 'asc' });
+  const [columnFilters, setColumnFilters] = useState({});
+  const [showFilterDropdown, setShowFilterDropdown] = useState(null);
+  const [savedRequests, setSavedRequests] = useState({}); // 저장된 추가요구사항 상태
+  const [editingRequest, setEditingRequest] = useState({}); // 추가요구사항 편집 모드
+  const [savingRequest, setSavingRequest] = useState({}); // 추가요구사항 저장 중 상태
+
+  // 컴포넌트 마운트 시 저장된 데이터 로드
+  React.useEffect(() => {
+    const loadSavedData = () => {
+      const savedRequestsData = {};
+      
+      materials.forEach(material => {
+        if (material.user_requirement && material.user_requirement.trim()) {
+          savedRequestsData[material.id] = material.user_requirement.trim();
+        }
+      });
+      
+      setSavedRequests(savedRequestsData);
+    };
+
+    if (materials && materials.length > 0) {
+      loadSavedData();
+    } else {
+      setSavedRequests({});
+    }
+  }, [materials]);
+
+  // 추가요구사항 저장 함수
+  const handleSaveRequest = async (materialId, request) => {
+    setSavingRequest(prev => ({ ...prev, [materialId]: true }));
+    try {
+      await api.patch(`/materials/${materialId}/user-requirement`, { 
+        user_requirement: request.trim() 
+      });
+      setSavedRequests(prev => ({ ...prev, [materialId]: request.trim() }));
+      setEditingRequest(prev => ({ ...prev, [materialId]: false }));
+      setUserRequirements(prev => ({ ...prev, [materialId]: '' }));
+      
+      if (updateMaterial) {
+        updateMaterial(materialId, { user_requirement: request.trim() });
+      }
+    } catch (error) {
+      console.error('추가요구사항 저장 실패:', error);
+      alert('추가요구사항 저장에 실패했습니다.');
+    } finally {
+      setSavingRequest(prev => ({ ...prev, [materialId]: false }));
+    }
+  };
+
+  // 추가요구사항 편집 시작
+  const handleEditRequest = (materialId, currentRequest) => {
+    setEditingRequest(prev => ({ ...prev, [materialId]: true }));
+    setUserRequirements(prev => ({ ...prev, [materialId]: currentRequest || '' }));
+  };
+
+  // 미분류 자재 정보 파싱 (원본 그대로 표시)
+  const parseUnclassifiedInfo = (material) => {
+    const description = material.original_description || material.description || '';
+    const qty = Math.round(material.quantity || 0);
+    
+    return {
+      description: description || '-',
+      size: material.main_nom || material.size_spec || '-',
+      drawing: material.drawing_name || material.line_no || '-',
+      lineNo: material.line_no || '-',
+      quantity: qty,
+      originalQuantity: qty,
+      purchaseQuantity: qty,
+      isUnclassified: true
+    };
+  };
+
+  // 정렬 처리
+  const handleSort = (key) => {
+    let direction = 'asc';
+    if (sortConfig.key === key && sortConfig.direction === 'asc') {
+      direction = 'desc';
+    }
+    setSortConfig({ key, direction });
+  };
+
+  // 필터링 및 정렬된 자료
+  const getFilteredAndSortedMaterials = () => {
+    let filtered = materials.filter(material => {
+      const info = parseUnclassifiedInfo(material);
+      
+      // 컬럼 필터 적용
+      for (const [key, filterValue] of Object.entries(columnFilters)) {
+        if (filterValue && filterValue.trim()) {
+          const materialValue = String(info[key] || '').toLowerCase();
+          const filter = filterValue.toLowerCase();
+          if (!materialValue.includes(filter)) {
+            return false;
+          }
+        }
+      }
+      return true;
+    });
+
+    // 정렬 적용
+    if (sortConfig.key) {
+      filtered.sort((a, b) => {
+        const aInfo = parseUnclassifiedInfo(a);
+        const bInfo = parseUnclassifiedInfo(b);
+        
+        const aValue = aInfo[sortConfig.key];
+        const bValue = bInfo[sortConfig.key];
+        
+        if (aValue < bValue) return sortConfig.direction === 'asc' ? -1 : 1;
+        if (aValue > bValue) return sortConfig.direction === 'asc' ? 1 : -1;
+        return 0;
+      });
+    }
+
+    return filtered;
+  };
+
+  const filteredMaterials = getFilteredAndSortedMaterials();
+
+  // 전체 선택/해제
+  const handleSelectAll = () => {
+    const selectableMaterials = filteredMaterials.filter(material => 
+      !purchasedMaterials.has(material.id)
+    );
+    
+    const allSelected = selectableMaterials.every(material => 
+      selectedMaterials.has(material.id)
+    );
+    
+    if (allSelected) {
+      // 전체 해제
+      const newSelected = new Set(selectedMaterials);
+      selectableMaterials.forEach(material => {
+        newSelected.delete(material.id);
+      });
+      setSelectedMaterials(newSelected);
+    } else {
+      // 전체 선택
+      const newSelected = new Set(selectedMaterials);
+      selectableMaterials.forEach(material => {
+        newSelected.add(material.id);
+      });
+      setSelectedMaterials(newSelected);
+    }
+  };
+
+  // 개별 선택/해제
+  const handleMaterialSelect = (materialId) => {
+    const newSelected = new Set(selectedMaterials);
+    if (newSelected.has(materialId)) {
+      newSelected.delete(materialId);
+    } else {
+      newSelected.add(materialId);
+    }
+    setSelectedMaterials(newSelected);
+  };
+
+  // 엑셀 내보내기
+  const handleExportToExcel = async () => {
+    const selectedMaterialsData = materials.filter(m => selectedMaterials.has(m.id));
+    if (selectedMaterialsData.length === 0) {
+      alert('내보낼 자재를 선택해주세요.');
+      return;
+    }
+
+    const timestamp = new Date().toISOString().slice(0, 19).replace(/:/g, '-');
+    const excelFileName = `UNCLASSIFIED_Materials_${timestamp}.xlsx`;
+
+    const dataWithRequirements = selectedMaterialsData.map(material => ({
+      ...material,
+      user_requirement: savedRequests[material.id] || userRequirements[material.id] || ''
+    }));
+
+    try {
+      console.log('🔄 미분류 엑셀 내보내기 시작 - 새로운 방식');
+      
+      // 1. 먼저 클라이언트에서 엑셀 파일 생성
+      console.log('📊 엑셀 Blob 생성 중...', dataWithRequirements.length, '개 자료');
+      const excelBlob = await createExcelBlob(dataWithRequirements, excelFileName, {
+        category: 'UNCLASSIFIED',
+        filename: excelFileName,
+        user: user?.username || 'unknown'
+      });
+      
+      // 2. 구매신청 생성
+      console.log('📝 구매신청 생성 중...');
+      const purchaseResponse = await api.post('/purchase-request/create', {
+        materials_data: dataWithRequirements,
+        file_id: fileId,
+        job_no: jobNo
+      });
+      
+      console.log('✅ 구매신청 생성 완료:', purchaseResponse.data);
+      
+      // 3. 엑셀 파일을 서버에 업로드
+      console.log('📤 엑셀 파일 서버 업로드 중...');
+      const formData = new FormData();
+      formData.append('excel_file', excelBlob, excelFileName);
+      formData.append('request_id', purchaseResponse.data.request_id);
+      formData.append('filename', excelFileName);
+      
+      const uploadResponse = await api.post('/purchase-request/upload-excel', formData, {
+        headers: {
+          'Content-Type': 'multipart/form-data',
+        },
+      });
+      
+      console.log('✅ 엑셀 업로드 완료:', uploadResponse.data);
+      
+      // 4. 구매신청된 자재들을 비활성화
+      const purchasedIds = selectedMaterialsData.map(m => m.id);
+      onPurchasedMaterialsUpdate(purchasedIds);
+      
+      // 5. 선택 해제
+      setSelectedMaterials(new Set());
+      
+      // 6. 클라이언트에서도 다운로드
+      const url = window.URL.createObjectURL(excelBlob);
+      const link = document.createElement('a');
+      link.href = url;
+      link.download = excelFileName;
+      document.body.appendChild(link);
+      link.click();
+      document.body.removeChild(link);
+      window.URL.revokeObjectURL(url);
+      
+      console.log('✅ 미분류 엑셀 내보내기 완료');
+      alert(`미분류 자재 엑셀 파일이 생성되었습니다.\n파일명: ${excelFileName}`);
+      
+      // 구매신청 관리 페이지로 이동
+      if (onNavigate) {
+        onNavigate('purchase-requests');
+      }
+      
+    } catch (error) {
+      console.error('❌ 미분류 엑셀 내보내기 실패:', error);
+      alert('엑셀 내보내기 중 오류가 발생했습니다: ' + (error.response?.data?.detail || error.message));
+    }
+  };
+
+  const allSelected = filteredMaterials.length > 0 && 
+    filteredMaterials.filter(material => !purchasedMaterials.has(material.id))
+      .every(material => selectedMaterials.has(material.id));
+
+  return (
+    <div style={{ padding: '24px' }}>
+      {/* 헤더 */}
+      <div style={{
+        display: 'flex',
+        justifyContent: 'space-between',
+        alignItems: 'center',
+        marginBottom: '24px',
+        padding: '20px',
+        background: 'linear-gradient(135deg, #64748b 0%, #475569 100%)',
+        borderRadius: '12px',
+        color: 'white'
+      }}>
+        <div>
+          <h2 style={{ margin: 0, fontSize: '24px', fontWeight: '700' }}>
+            Unclassified Materials
+          </h2>
+          <p style={{ margin: '8px 0 0 0', opacity: 0.9 }}>
+            분류되지 않은 자재 관리 ({filteredMaterials.length}개)
+          </p>
+        </div>
+        <button
+          onClick={handleExportToExcel}
+          disabled={selectedMaterials.size === 0}
+          style={{
+            padding: '12px 24px',
+            background: selectedMaterials.size > 0 ? 'rgba(255,255,255,0.2)' : 'rgba(255,255,255,0.1)',
+            border: '1px solid rgba(255,255,255,0.3)',
+            borderRadius: '8px',
+            color: 'white',
+            fontWeight: '600',
+            cursor: selectedMaterials.size > 0 ? 'pointer' : 'not-allowed',
+            transition: 'all 0.2s ease',
+            backdropFilter: 'blur(10px)'
+          }}
+        >
+          구매신청 ({selectedMaterials.size})
+        </button>
+      </div>
+
+      {/* 테이블 */}
+      <div style={{
+        background: 'white',
+        borderRadius: '12px',
+        overflow: 'auto',
+        maxHeight: '600px',
+        border: '1px solid #e5e7eb',
+        minWidth: '1200px'
+      }}>
+        <div style={{ minWidth: '1200px' }}>
+          {/* 헤더 */}
+          <div style={{
+            display: 'grid',
+            gridTemplateColumns: '50px 400px 150px 200px 150px 250px 150px',
+            gap: '16px',
+            padding: '16px',
+            background: '#f8fafc',
+            borderBottom: '2px solid #e2e8f0',
+            fontWeight: '600',
+            fontSize: '14px',
+            color: '#1f2937',
+            textAlign: 'center'
+          }}>
+            <div>
+              <input
+                type="checkbox"
+                checked={allSelected}
+                onChange={handleSelectAll}
+                style={{ cursor: 'pointer' }}
+              />
+            </div>
+            <FilterableHeader 
+              sortKey="description" 
+              filterKey="description"
+              sortConfig={sortConfig}
+              onSort={handleSort}
+              columnFilters={columnFilters}
+              onFilterChange={setColumnFilters}
+              showFilterDropdown={showFilterDropdown}
+              setShowFilterDropdown={setShowFilterDropdown}
+            >
+              Description
+            </FilterableHeader>
+            <FilterableHeader 
+              sortKey="size" 
+              filterKey="size"
+              sortConfig={sortConfig}
+              onSort={handleSort}
+              columnFilters={columnFilters}
+              onFilterChange={setColumnFilters}
+              showFilterDropdown={showFilterDropdown}
+              setShowFilterDropdown={setShowFilterDropdown}
+            >
+              Size
+            </FilterableHeader>
+            <FilterableHeader 
+              sortKey="drawing" 
+              filterKey="drawing"
+              sortConfig={sortConfig}
+              onSort={handleSort}
+              columnFilters={columnFilters}
+              onFilterChange={setColumnFilters}
+              showFilterDropdown={showFilterDropdown}
+              setShowFilterDropdown={setShowFilterDropdown}
+            >
+              Drawing
+            </FilterableHeader>
+            <FilterableHeader 
+              sortKey="lineNo" 
+              filterKey="lineNo"
+              sortConfig={sortConfig}
+              onSort={handleSort}
+              columnFilters={columnFilters}
+              onFilterChange={setColumnFilters}
+              showFilterDropdown={showFilterDropdown}
+              setShowFilterDropdown={setShowFilterDropdown}
+            >
+              Line No
+            </FilterableHeader>
+            <div>Additional Request</div>
+            <div>Purchase Quantity</div>
+          </div>
+
+          {/* 데이터 행들 */}
+          <div>
+            {filteredMaterials.map((material, index) => {
+              const info = parseUnclassifiedInfo(material);
+              const isSelected = selectedMaterials.has(material.id);
+              const isPurchased = purchasedMaterials.has(material.id);
+              
+              return (
+                <div
+                  key={material.id}
+                  style={{
+                    display: 'grid',
+                    gridTemplateColumns: '50px 400px 150px 200px 150px 250px 150px',
+                    gap: '16px',
+                    padding: '16px',
+                    borderBottom: index < filteredMaterials.length - 1 ? '1px solid #f1f5f9' : 'none',
+                    background: isSelected ? '#eff6ff' : (isPurchased ? '#fef3c7' : 'white'),
+                    transition: 'background 0.15s ease',
+                    textAlign: 'center'
+                  }}
+                  onMouseEnter={(e) => {
+                    if (!isSelected && !isPurchased) {
+                      e.target.style.background = '#f8fafc';
+                    }
+                  }}
+                  onMouseLeave={(e) => {
+                    if (!isSelected && !isPurchased) {
+                      e.target.style.background = 'white';
+                    }
+                  }}
+                >
+                  <div>
+                    <input
+                      type="checkbox"
+                      checked={isSelected}
+                      onChange={() => handleMaterialSelect(material.id)}
+                      disabled={isPurchased}
+                      style={{ 
+                        cursor: isPurchased ? 'not-allowed' : 'pointer',
+                        opacity: isPurchased ? 0.5 : 1
+                      }}
+                    />
+                  </div>
+                  <div style={{ 
+                    fontSize: '14px', 
+                    color: '#1f2937', 
+                    textAlign: 'left',
+                    paddingLeft: '8px',
+                    wordBreak: 'break-word'
+                  }}>
+                    {info.description}
+                    {isPurchased && (
+                      <span style={{
+                        marginLeft: '8px',
+                        padding: '2px 6px',
+                        background: '#fbbf24',
+                        color: '#92400e',
+                        borderRadius: '4px',
+                        fontSize: '10px',
+                        fontWeight: '600'
+                      }}>
+                        PURCHASED
+                      </span>
+                    )}
+                  </div>
+                  <div style={{ fontSize: '14px', color: '#1f2937' }}>{info.size}</div>
+                  <div style={{ fontSize: '14px', color: '#1f2937' }}>{info.drawing}</div>
+                  <div style={{ fontSize: '14px', color: '#1f2937' }}>{info.lineNo}</div>
+                  <div style={{ display: 'flex', gap: '4px', alignItems: 'center' }}>
+                    {!editingRequest[material.id] && savedRequests[material.id] ? (
+                      // 저장된 상태 - 요구사항 표시 + 수정 버튼
+                      <>
+                        <div style={{
+                          flex: 1,
+                          padding: '6px 8px',
+                          border: '1px solid #e5e7eb',
+                          borderRadius: '4px',
+                          fontSize: '12px',
+                          textAlign: 'center',
+                          background: '#f9fafb',
+                          color: '#374151'
+                        }}>
+                          {savedRequests[material.id]}
+                        </div>
+                        <button
+                          onClick={() => handleEditRequest(material.id, savedRequests[material.id])}
+                          disabled={isPurchased}
+                          style={{
+                            padding: '6px 8px',
+                            border: 'none',
+                            borderRadius: '4px',
+                            background: isPurchased ? '#d1d5db' : '#f59e0b',
+                            color: 'white',
+                            fontSize: '10px',
+                            cursor: isPurchased ? 'not-allowed' : 'pointer',
+                            opacity: isPurchased ? 0.5 : 1,
+                            minWidth: '40px'
+                          }}
+                        >
+                          Edit
+                        </button>
+                      </>
+                    ) : (
+                      // 편집 상태 - 입력 필드 + 저장 버튼
+                      <>
+                        <input
+                          type="text"
+                          value={userRequirements[material.id] || ''}
+                          onChange={(e) => setUserRequirements({
+                            ...userRequirements,
+                            [material.id]: e.target.value
+                          })}
+                          placeholder="Enter additional request..."
+                          disabled={isPurchased}
+                          style={{
+                            flex: 1,
+                            padding: '6px 8px',
+                            border: '1px solid #d1d5db',
+                            borderRadius: '4px',
+                            fontSize: '12px',
+                            opacity: isPurchased ? 0.5 : 1,
+                            cursor: isPurchased ? 'not-allowed' : 'text'
+                          }}
+                        />
+                        <button
+                          onClick={() => handleSaveRequest(material.id, userRequirements[material.id] || '')}
+                          disabled={isPurchased || savingRequest[material.id]}
+                          style={{
+                            padding: '6px 8px',
+                            border: 'none',
+                            borderRadius: '4px',
+                            background: isPurchased ? '#d1d5db' : '#10b981',
+                            color: 'white',
+                            fontSize: '10px',
+                            cursor: isPurchased || savingRequest[material.id] ? 'not-allowed' : 'pointer',
+                            opacity: isPurchased ? 0.5 : 1,
+                            minWidth: '40px'
+                          }}
+                        >
+                          {savingRequest[material.id] ? '...' : 'Save'}
+                        </button>
+                      </>
+                    )}
+                  </div>
+                  <div style={{ fontSize: '14px', color: '#1f2937', textAlign: 'center' }}>
+                    {info.purchaseQuantity}
+                  </div>
+                </div>
+              );
+            })}
+          </div>
+        </div>
+      </div>
+
+      {filteredMaterials.length === 0 && (
+        <div style={{
+          textAlign: 'center',
+          padding: '60px 20px',
+          color: '#6b7280',
+          background: 'white',
+          borderRadius: '12px',
+          border: '1px solid #e5e7eb',
+          marginTop: '20px'
+        }}>
+          <div style={{ fontSize: '48px', marginBottom: '16px' }}>❓</div>
+          <h3 style={{ margin: '0 0 8px 0', color: '#374151' }}>미분류 자재가 없습니다</h3>
+          <p style={{ margin: 0 }}>분류되지 않은 자재가 발견되면 여기에 표시됩니다.</p>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default UnclassifiedMaterialsView;

frontend/src/components/bom/materials/ValveMaterialsView.jsx

@@ -0,0 +1,840 @@
+import React, { useState } from 'react';
+import { exportMaterialsToExcel, createExcelBlob } from '../../../utils/excelExport';
+import api from '../../../api';
+import { FilterableHeader } from '../shared';
+
+const ValveMaterialsView = ({ 
+  materials, 
+  selectedMaterials, 
+  setSelectedMaterials,
+  userRequirements,
+  setUserRequirements,
+  purchasedMaterials,
+  onPurchasedMaterialsUpdate,
+  updateMaterial, // 자재 업데이트 함수
+  fileId,
+  jobNo,
+  user 
+}) => {
+  const [sortConfig, setSortConfig] = useState({ key: null, direction: 'asc' });
+  const [columnFilters, setColumnFilters] = useState({});
+  const [showFilterDropdown, setShowFilterDropdown] = useState(null);
+  const [brandInputs, setBrandInputs] = useState({}); // 브랜드 입력 상태
+  const [savingBrand, setSavingBrand] = useState({}); // 브랜드 저장 중 상태
+  const [savingRequest, setSavingRequest] = useState({}); // 추가요구사항 저장 중 상태
+  const [savedBrands, setSavedBrands] = useState({}); // 저장된 브랜드 상태
+  const [savedRequests, setSavedRequests] = useState({}); // 저장된 추가요구사항 상태
+  const [editingBrand, setEditingBrand] = useState({}); // 브랜드 편집 모드
+  const [editingRequest, setEditingRequest] = useState({}); // 추가요구사항 편집 모드
+
+  // 컴포넌트 마운트 시 저장된 데이터 로드
+  React.useEffect(() => {
+    const loadSavedData = () => {
+      const savedBrandsData = {};
+      const savedRequestsData = {};
+      
+      console.log('🔍 ValveMaterialsView useEffect 트리거됨:', materials.length, '개 자재');
+      console.log('🔍 현재 materials 배열:', materials.map(m => ({id: m.id, brand: m.brand, user_requirement: m.user_requirement})));
+      
+      materials.forEach(material => {
+        // 백엔드에서 가져온 데이터가 있으면 저장된 상태로 설정
+        if (material.brand && material.brand.trim()) {
+          savedBrandsData[material.id] = material.brand.trim();
+          console.log('✅ 브랜드 로드됨:', material.id, '→', material.brand);
+        }
+        if (material.user_requirement && material.user_requirement.trim()) {
+          savedRequestsData[material.id] = material.user_requirement.trim();
+          console.log('✅ 요구사항 로드됨:', material.id, '→', material.user_requirement);
+        }
+      });
+      
+      console.log('💾 최종 저장된 브랜드:', savedBrandsData);
+      console.log('💾 최종 저장된 요구사항:', savedRequestsData);
+      
+      // 상태 업데이트를 즉시 반영하기 위해 setTimeout 사용
+      setSavedBrands(savedBrandsData);
+      setSavedRequests(savedRequestsData);
+      
+      // 상태 업데이트 후 강제 리렌더링 확인
+      setTimeout(() => {
+        console.log('🔄 상태 업데이트 후 확인 - savedBrands:', savedBrandsData);
+      }, 100);
+    };
+
+    console.log('🔄 ValveMaterialsView useEffect 실행 - materials 길이:', materials?.length || 0);
+    
+    if (materials && materials.length > 0) {
+      loadSavedData();
+    } else {
+      console.log('⚠️ materials가 비어있거나 undefined');
+      // 빈 상태로 초기화
+      setSavedBrands({});
+      setSavedRequests({});
+    }
+  }, [materials]);
+
+  const parseValveInfo = (material) => {
+    const valveDetails = material.valve_details || {};
+    const description = material.original_description || '';
+    const descUpper = description.toUpperCase();
+    
+    // 1. 벨브 타입 파싱 (한글명으로 표시)
+    let valveType = '';
+    if (descUpper.includes('SIGHT GLASS') || descUpper.includes('사이트글라스')) {
+      valveType = 'SIGHT GLASS';
+    } else if (descUpper.includes('STRAINER') || descUpper.includes('스트레이너')) {
+      valveType = 'STRAINER';
+    } else if (descUpper.includes('GATE') || descUpper.includes('게이트')) {
+      valveType = 'GATE VALVE';
+    } else if (descUpper.includes('BALL') || descUpper.includes('볼')) {
+      valveType = 'BALL VALVE';
+    } else if (descUpper.includes('CHECK') || descUpper.includes('체크')) {
+      valveType = 'CHECK VALVE';
+    } else if (descUpper.includes('GLOBE') || descUpper.includes('글로브')) {
+      valveType = 'GLOBE VALVE';
+    } else if (descUpper.includes('BUTTERFLY') || descUpper.includes('버터플라이')) {
+      valveType = 'BUTTERFLY VALVE';
+    } else if (descUpper.includes('NEEDLE') || descUpper.includes('니들')) {
+      valveType = 'NEEDLE VALVE';
+    } else if (descUpper.includes('RELIEF') || descUpper.includes('릴리프')) {
+      valveType = 'RELIEF VALVE';
+    } else {
+      valveType = 'VALVE';
+    }
+    
+    // 2. 사이즈 정보
+    const size = material.main_nom || material.size_inch || material.size_spec || '-';
+    
+    // 3. 압력 등급
+    const pressure = material.pressure_rating || 
+      (descUpper.match(/(\d+)\s*LB/) ? descUpper.match(/(\d+)\s*LB/)[0] : '-');
+    
+    // 4. 브랜드 (사용자 입력 가능)
+    const brand = '-'; // 기본값, 사용자가 입력할 수 있도록
+    
+    // 5. 추가 정보 추출 (3-WAY, DOUL PLATE, DOUBLE DISC 등)
+    let additionalInfo = '';
+    const additionalPatterns = [
+      '3-WAY', '3WAY', 'THREE WAY',
+      'DOUL PLATE', 'DOUBLE PLATE', 'DUAL PLATE',
+      'DOUBLE DISC', 'DUAL DISC',
+      'SWING', 'LIFT', 'TILTING',
+      'WAFER', 'LUG', 'FLANGED',
+      'FULL BORE', 'REDUCED BORE',
+      'FIRE SAFE', 'ANTI STATIC'
+    ];
+    
+    for (const pattern of additionalPatterns) {
+      if (descUpper.includes(pattern)) {
+        if (additionalInfo) {
+          additionalInfo += ', ';
+        }
+        additionalInfo += pattern;
+      }
+    }
+    
+    if (!additionalInfo) {
+      additionalInfo = '-';
+    }
+    
+    // 6. 연결 방식 (투입구/Connection Type)
+    let connectionType = '';
+    if (descUpper.includes('SW X THRD') || descUpper.includes('SW×THRD')) {
+      connectionType = 'SW×THRD';
+    } else if (descUpper.includes('FLG') || descUpper.includes('FLANGE')) {
+      connectionType = 'FLG';
+    } else if (descUpper.includes('SW') || descUpper.includes('SOCKET')) {
+      connectionType = 'SW';
+    } else if (descUpper.includes('THRD') || descUpper.includes('THREAD')) {
+      connectionType = 'THRD';
+    } else if (descUpper.includes('BW') || descUpper.includes('BUTT WELD')) {
+      connectionType = 'BW';
+    } else {
+      connectionType = '-';
+    }
+    
+    // 7. 구매 수량 계산 (기본 수량 그대로)
+    const qty = Math.round(material.quantity || 0);
+    const purchaseQuantity = `${qty} EA`;
+    
+    return {
+      type: valveType, // 벨브 종류만 (GATE VALVE, BALL VALVE 등)
+      size: size,
+      pressure: pressure,
+      brand: brand, // 브랜드 (사용자 입력 가능)
+      additionalInfo: additionalInfo, // 추가 정보 (3-WAY, DOUL PLATE 등)
+      connection: connectionType, // 투입구/연결방식 (SW, FLG 등)
+      additionalRequest: '-', // 추가 요구사항 (기존 User Requirement)
+      purchaseQuantity: purchaseQuantity,
+      originalQuantity: qty,
+      isValve: true
+    };
+  };
+
+  // 정렬 처리
+  const handleSort = (key) => {
+    let direction = 'asc';
+    if (sortConfig.key === key && sortConfig.direction === 'asc') {
+      direction = 'desc';
+    }
+    setSortConfig({ key, direction });
+  };
+
+  // 필터링된 및 정렬된 자재 목록
+  const getFilteredAndSortedMaterials = () => {
+    let filtered = materials.filter(material => {
+      return Object.entries(columnFilters).every(([key, filterValue]) => {
+        if (!filterValue) return true;
+        const info = parseValveInfo(material);
+        const value = info[key]?.toString().toLowerCase() || '';
+        return value.includes(filterValue.toLowerCase());
+      });
+    });
+
+    if (sortConfig && sortConfig.key) {
+      filtered.sort((a, b) => {
+        const aInfo = parseValveInfo(a);
+        const bInfo = parseValveInfo(b);
+        
+        if (!aInfo || !bInfo) return 0;
+        
+        const aValue = aInfo[sortConfig.key];
+        const bValue = bInfo[sortConfig.key];
+        
+        // 값이 없는 경우 처리
+        if (aValue === undefined && bValue === undefined) return 0;
+        if (aValue === undefined) return 1;
+        if (bValue === undefined) return -1;
+        
+        // 숫자인 경우 숫자로 비교
+        if (typeof aValue === 'number' && typeof bValue === 'number') {
+          return sortConfig.direction === 'asc' ? aValue - bValue : bValue - aValue;
+        }
+        
+        // 문자열로 비교
+        const aStr = String(aValue).toLowerCase();
+        const bStr = String(bValue).toLowerCase();
+        
+        if (sortConfig.direction === 'asc') {
+          return aStr.localeCompare(bStr);
+        } else {
+          return bStr.localeCompare(aStr);
+        }
+      });
+    }
+
+    return filtered;
+  };
+
+  // 전체 선택/해제 (구매신청된 자재 제외)
+  // 브랜드 저장 함수
+  const handleSaveBrand = async (materialId, brand) => {
+    if (!brand.trim()) return;
+    
+    setSavingBrand(prev => ({ ...prev, [materialId]: true }));
+    try {
+      await api.patch(`/materials/${materialId}/brand`, { brand: brand.trim() });
+      // 성공 시 저장된 상태로 전환
+      setSavedBrands(prev => ({ ...prev, [materialId]: brand.trim() }));
+      setEditingBrand(prev => ({ ...prev, [materialId]: false }));
+      setBrandInputs(prev => ({ ...prev, [materialId]: '' })); // 입력 필드 초기화
+      
+      // materials 배열도 업데이트 (카테고리 변경 시 데이터 유지를 위해)
+      if (updateMaterial) {
+        updateMaterial(materialId, { brand: brand.trim() });
+        console.log('✅ materials 배열 업데이트 완료:', materialId, '→', brand.trim());
+      }
+    } catch (error) {
+      console.error('브랜드 저장 실패:', error);
+      alert('브랜드 저장에 실패했습니다.');
+    } finally {
+      setSavingBrand(prev => ({ ...prev, [materialId]: false }));
+    }
+  };
+
+  // 브랜드 편집 시작
+  const handleEditBrand = (materialId, currentBrand) => {
+    setEditingBrand(prev => ({ ...prev, [materialId]: true }));
+    setBrandInputs(prev => ({ ...prev, [materialId]: currentBrand || '' }));
+  };
+
+  // 추가요구사항 저장 함수
+  const handleSaveRequest = async (materialId, request) => {
+    setSavingRequest(prev => ({ ...prev, [materialId]: true }));
+    try {
+      await api.patch(`/materials/${materialId}/user-requirement`, { 
+        user_requirement: request.trim() 
+      });
+      // 성공 시 저장된 상태로 전환
+      setSavedRequests(prev => ({ ...prev, [materialId]: request.trim() }));
+      setEditingRequest(prev => ({ ...prev, [materialId]: false }));
+      setUserRequirements(prev => ({ ...prev, [materialId]: '' })); // 입력 필드 초기화
+      
+      // materials 배열도 업데이트 (카테고리 변경 시 데이터 유지를 위해)
+      if (updateMaterial) {
+        updateMaterial(materialId, { user_requirement: request.trim() });
+        console.log('✅ materials 배열 업데이트 완료:', materialId, '→', request.trim());
+      }
+    } catch (error) {
+      console.error('추가요구사항 저장 실패:', error);
+      alert('추가요구사항 저장에 실패했습니다.');
+    } finally {
+      setSavingRequest(prev => ({ ...prev, [materialId]: false }));
+    }
+  };
+
+  // 추가요구사항 편집 시작
+  const handleEditRequest = (materialId, currentRequest) => {
+    setEditingRequest(prev => ({ ...prev, [materialId]: true }));
+    setUserRequirements(prev => ({ ...prev, [materialId]: currentRequest || '' }));
+  };
+
+  const handleSelectAll = () => {
+    const filteredMaterials = getFilteredAndSortedMaterials();
+    const selectableMaterials = filteredMaterials.filter(m => !purchasedMaterials.has(m.id));
+    
+    if (selectedMaterials.size === selectableMaterials.length) {
+      setSelectedMaterials(new Set());
+    } else {
+      setSelectedMaterials(new Set(selectableMaterials.map(m => m.id)));
+    }
+  };
+
+  // 개별 선택 (구매신청된 자재는 선택 불가)
+  const handleMaterialSelect = (materialId) => {
+    if (purchasedMaterials.has(materialId)) {
+      return; // 구매신청된 자재는 선택 불가
+    }
+    
+    const newSelected = new Set(selectedMaterials);
+    if (newSelected.has(materialId)) {
+      newSelected.delete(materialId);
+    } else {
+      newSelected.add(materialId);
+    }
+    setSelectedMaterials(newSelected);
+  };
+
+  // 엑셀 내보내기
+  const handleExportToExcel = async () => {
+    const selectedMaterialsData = materials.filter(m => selectedMaterials.has(m.id));
+    if (selectedMaterialsData.length === 0) {
+      alert('내보낼 자재를 선택해주세요.');
+      return;
+    }
+
+    const timestamp = new Date().toISOString().slice(0, 19).replace(/:/g, '-');
+    const excelFileName = `VALVE_Materials_${timestamp}.xlsx`;
+
+    const dataWithRequirements = selectedMaterialsData.map(material => ({
+      ...material,
+      user_requirement: savedRequests[material.id] || userRequirements[material.id] || ''
+    }));
+
+    try {
+      console.log('🔄 밸브 엑셀 내보내기 시작 - 새로운 방식');
+      
+      // 1. 먼저 클라이언트에서 엑셀 파일 생성
+      console.log('📊 엑셀 Blob 생성 중...', dataWithRequirements.length, '개 자료');
+      const excelBlob = await createExcelBlob(dataWithRequirements, excelFileName, {
+        category: 'VALVE',
+        filename: excelFileName,
+        uploadDate: new Date().toLocaleDateString()
+      });
+      console.log('✅ 엑셀 Blob 생성 완료:', excelBlob.size, 'bytes');
+
+      // 2. 구매신청 생성
+      const allMaterialIds = selectedMaterialsData.map(m => m.id);
+      const response = await api.post('/purchase-request/create', {
+        file_id: fileId,
+        job_no: jobNo,
+        category: 'VALVE',
+        material_ids: allMaterialIds,
+        materials_data: dataWithRequirements.map(m => ({
+          material_id: m.id,
+          description: m.original_description,
+          category: m.classified_category,
+          size: m.size_inch || m.size_spec,
+          schedule: m.schedule,
+          material_grade: m.material_grade || m.full_material_grade,
+          quantity: m.quantity,
+          unit: m.unit,
+          user_requirement: userRequirements[m.id] || ''
+        }))
+      });
+
+      if (response.data.success) {
+        console.log(`✅ 구매신청 완료: ${response.data.request_no}, request_id: ${response.data.request_id}`);
+        
+        // 3. 생성된 엑셀 파일을 서버에 업로드
+        console.log('📤 서버에 엑셀 파일 업로드 중...');
+        const formData = new FormData();
+        formData.append('excel_file', excelBlob, excelFileName);
+        formData.append('request_id', response.data.request_id);
+        formData.append('category', 'VALVE');
+        
+        const uploadResponse = await api.post('/purchase-request/upload-excel', formData, {
+          headers: {
+            'Content-Type': 'multipart/form-data',
+          },
+        });
+        console.log('✅ 엑셀 업로드 완료:', uploadResponse.data);
+
+        if (onPurchasedMaterialsUpdate) {
+          onPurchasedMaterialsUpdate(allMaterialIds);
+        }
+      }
+
+      // 4. 클라이언트 다운로드
+      const url = window.URL.createObjectURL(excelBlob);
+      const link = document.createElement('a');
+      link.href = url;
+      link.download = excelFileName;
+      document.body.appendChild(link);
+      link.click();
+      document.body.removeChild(link);
+      window.URL.revokeObjectURL(url);
+
+      alert(`구매신청 ${response.data?.request_no || ''}이 생성되고 엑셀 파일이 저장되었습니다.`);
+    } catch (error) {
+      console.error('엑셀 저장 또는 구매신청 실패:', error);
+      // 실패 시에도 클라이언트 다운로드는 진행
+      exportMaterialsToExcel(dataWithRequirements, excelFileName, {
+        category: 'VALVE',
+        filename: excelFileName,
+        uploadDate: new Date().toLocaleDateString()
+      });
+      alert('엑셀 파일은 다운로드되었지만 구매신청 생성에 실패했습니다.');
+    }
+  };
+
+  const filteredMaterials = getFilteredAndSortedMaterials();
+
+  return (
+    <div style={{ padding: '32px' }}>
+      {/* 헤더 */}
+      <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: '24px' }}>
+        <div>
+          <h3 style={{ 
+            fontSize: '24px', 
+            fontWeight: '700', 
+            color: '#0f172a', 
+            margin: '0 0 8px 0' 
+          }}>
+            Valve Materials
+          </h3>
+          <p style={{ 
+            fontSize: '14px', 
+            color: '#64748b', 
+            margin: 0 
+          }}>
+            {filteredMaterials.length} items • {selectedMaterials.size} selected
+          </p>
+        </div>
+        
+        <div style={{ display: 'flex', gap: '12px' }}>
+          <button
+            onClick={handleSelectAll}
+            style={{
+              background: 'white',
+              color: '#6b7280',
+              border: '1px solid #d1d5db',
+              borderRadius: '8px',
+              padding: '10px 16px',
+              cursor: 'pointer',
+              fontSize: '14px',
+              fontWeight: '500'
+            }}
+          >
+            {selectedMaterials.size === filteredMaterials.length ? 'Deselect All' : 'Select All'}
+          </button>
+        
+        <button
+          onClick={handleExportToExcel}
+          disabled={selectedMaterials.size === 0}
+          style={{
+            background: selectedMaterials.size > 0 ? 'linear-gradient(135deg, #ef4444 0%, #dc2626 100%)' : '#e5e7eb',
+            color: selectedMaterials.size > 0 ? 'white' : '#9ca3af',
+            border: 'none',
+            borderRadius: '8px',
+            padding: '10px 16px',
+            cursor: selectedMaterials.size > 0 ? 'pointer' : 'not-allowed',
+            fontSize: '14px',
+            fontWeight: '500'
+          }}
+        >
+          Export to Excel ({selectedMaterials.size})
+        </button>
+      </div>
+            </div>
+
+      {/* 테이블 */}
+      <div style={{ 
+        background: 'white', 
+        borderRadius: '12px', 
+        overflow: 'auto',
+        boxShadow: '0 1px 3px rgba(0, 0, 0, 0.1)',
+        maxHeight: '600px'
+      }}>
+        <div style={{ minWidth: '1600px' }}>
+          {/* 헤더 */}
+          <div style={{
+            display: 'grid',
+            gridTemplateColumns: '50px 200px 120px 120px 150px 180px 180px 150px 200px',
+            gap: '16px',
+            padding: '16px',
+            background: '#f8fafc',
+            borderBottom: '1px solid #e2e8f0',
+            fontSize: '14px',
+            fontWeight: '600',
+            color: '#374151',
+            textAlign: 'center'
+          }}>
+          <div>
+            <input
+              type="checkbox"
+              checked={(() => {
+                const selectableMaterials = filteredMaterials.filter(m => !purchasedMaterials.has(m.id));
+                return selectedMaterials.size === selectableMaterials.length && selectableMaterials.length > 0;
+              })()}
+              onChange={handleSelectAll}
+              style={{ cursor: 'pointer' }}
+            />
+          </div>
+          <FilterableHeader 
+            sortKey="type" 
+            filterKey="type"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Type
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="size" 
+            filterKey="size"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Size
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="pressure" 
+            filterKey="pressure"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Pressure
+          </FilterableHeader>
+          <div>Brand</div>
+          <FilterableHeader 
+            sortKey="additionalInfo" 
+            filterKey="additionalInfo"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Additional Info
+          </FilterableHeader>
+          <FilterableHeader 
+            sortKey="connection" 
+            filterKey="connection"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Connection
+          </FilterableHeader>
+          <div>Additional Request</div>
+          <FilterableHeader 
+            sortKey="purchaseQuantity" 
+            filterKey="purchaseQuantity"
+            sortConfig={sortConfig}
+            onSort={handleSort}
+            columnFilters={columnFilters}
+            onFilterChange={setColumnFilters}
+            showFilterDropdown={showFilterDropdown}
+            setShowFilterDropdown={setShowFilterDropdown}
+          >
+            Purchase Quantity
+          </FilterableHeader>
+        </div>
+
+        {/* 데이터 행들 */}
+        {filteredMaterials.map((material, index) => {
+            const info = parseValveInfo(material);
+            const isSelected = selectedMaterials.has(material.id);
+            const isPurchased = purchasedMaterials.has(material.id);
+            
+            return (
+              <div
+                key={material.id}
+                style={{
+                display: 'grid',
+                gridTemplateColumns: '50px 200px 120px 120px 150px 180px 180px 150px 200px',
+                gap: '16px',
+                  padding: '16px',
+                borderBottom: index < filteredMaterials.length - 1 ? '1px solid #f1f5f9' : 'none',
+                background: isSelected ? '#eff6ff' : (isPurchased ? '#fef3c7' : 'white'),
+                transition: 'background 0.15s ease',
+                textAlign: 'center'
+              }}
+              onMouseEnter={(e) => {
+                if (!isSelected && !isPurchased) {
+                  e.target.style.background = '#f8fafc';
+                }
+              }}
+              onMouseLeave={(e) => {
+                if (!isSelected && !isPurchased) {
+                  e.target.style.background = 'white';
+                }
+              }}
+            >
+              <div>
+                <input
+                  type="checkbox"
+                  checked={isSelected}
+                  onChange={() => handleMaterialSelect(material.id)}
+                  disabled={isPurchased}
+                  style={{ 
+                    cursor: isPurchased ? 'not-allowed' : 'pointer',
+                    opacity: isPurchased ? 0.5 : 1
+                  }}
+                />
+                  </div>
+              <div style={{ fontSize: '14px', color: '#1f2937', fontWeight: '500' }}>
+                {info.type}
+                {isPurchased && (
+                  <span style={{
+                    marginLeft: '8px',
+                    padding: '2px 6px',
+                    background: '#fbbf24',
+                    color: '#92400e',
+                    borderRadius: '4px',
+                    fontSize: '10px',
+                    fontWeight: '500'
+                  }}>
+                    PURCHASED
+                  </span>
+                )}
+              </div>
+              <div style={{ fontSize: '14px', color: '#1f2937' }}>{info.size}</div>
+              <div style={{ fontSize: '14px', color: '#1f2937' }}>{info.pressure}</div>
+              <div style={{ display: 'flex', gap: '4px', alignItems: 'center' }}>
+                {(() => {
+                  // 디버깅: 렌더링 시점의 상태 확인
+                  const hasEditingBrand = !!editingBrand[material.id];
+                  const hasSavedBrand = !!savedBrands[material.id];
+                  const shouldShowSaved = !hasEditingBrand && hasSavedBrand;
+                  
+                  if (material.id === 11789) { // 테스트 자재만 로그
+                    console.log(`🎨 UI 렌더링 - ID ${material.id}:`, {
+                      editingBrand: hasEditingBrand,
+                      savedBrandExists: hasSavedBrand,
+                      savedBrandValue: savedBrands[material.id],
+                      shouldShowSaved: shouldShowSaved,
+                      allSavedBrands: Object.keys(savedBrands),
+                      renderingMode: shouldShowSaved ? 'SAVED_VIEW' : 'INPUT_VIEW'
+                    });
+                  }
+                  
+                  // 명시적으로 boolean 반환
+                  return shouldShowSaved ? true : false;
+                })() ? (
+                  // 저장된 상태 - 브랜드 표시 + 수정 버튼
+                  <>
+                    <div style={{
+                      flex: 1,
+                      padding: '6px',
+                      border: '1px solid #e5e7eb',
+                      borderRadius: '4px',
+                      fontSize: '11px',
+                      textAlign: 'center',
+                      background: '#f9fafb',
+                      color: '#374151'
+                    }}>
+                      {savedBrands[material.id]}
+                    </div>
+                    <button
+                      onClick={() => handleEditBrand(material.id, savedBrands[material.id])}
+                      disabled={isPurchased}
+                      style={{
+                        padding: '6px 8px',
+                        border: 'none',
+                        borderRadius: '4px',
+                        background: isPurchased ? '#d1d5db' : '#f59e0b',
+                        color: 'white',
+                        fontSize: '10px',
+                        cursor: isPurchased ? 'not-allowed' : 'pointer',
+                        opacity: isPurchased ? 0.5 : 1,
+                        minWidth: '40px'
+                      }}
+                    >
+                      Edit
+                    </button>
+                  </>
+                ) : (
+                  // 편집 상태 - 입력 필드 + 저장 버튼
+                  <>
+                    <input
+                      type="text"
+                      value={brandInputs[material.id] || ''}
+                      onChange={(e) => setBrandInputs({
+                        ...brandInputs,
+                        [material.id]: e.target.value
+                      })}
+                      placeholder="Enter brand..."
+                      disabled={isPurchased}
+                      style={{
+                        flex: 1,
+                        padding: '6px',
+                        border: '1px solid #d1d5db',
+                        borderRadius: '4px',
+                        fontSize: '11px',
+                        textAlign: 'center',
+                        opacity: isPurchased ? 0.5 : 1,
+                        cursor: isPurchased ? 'not-allowed' : 'text'
+                      }}
+                    />
+                    <button
+                      onClick={() => handleSaveBrand(material.id, brandInputs[material.id] || '')}
+                      disabled={isPurchased || savingBrand[material.id] || !brandInputs[material.id]?.trim()}
+                      style={{
+                        padding: '6px 8px',
+                        border: 'none',
+                        borderRadius: '4px',
+                        background: isPurchased ? '#d1d5db' : '#3b82f6',
+                        color: 'white',
+                        fontSize: '10px',
+                        cursor: isPurchased || savingBrand[material.id] ? 'not-allowed' : 'pointer',
+                        opacity: isPurchased || !brandInputs[material.id]?.trim() ? 0.5 : 1,
+                        minWidth: '40px'
+                      }}
+                    >
+                      {savingBrand[material.id] ? '...' : 'Save'}
+                    </button>
+                  </>
+                )}
+              </div>
+              <div style={{ fontSize: '14px', color: '#1f2937' }}>{info.additionalInfo}</div>
+              <div style={{ fontSize: '14px', color: '#1f2937' }}>{info.connection}</div>
+              <div style={{ display: 'flex', gap: '4px', alignItems: 'center' }}>
+                {!editingRequest[material.id] && savedRequests[material.id] ? (
+                  // 저장된 상태 - 요구사항 표시 + 수정 버튼
+                  <>
+                    <div style={{
+                      flex: 1,
+                      padding: '6px',
+                      border: '1px solid #e5e7eb',
+                      borderRadius: '4px',
+                      fontSize: '11px',
+                      background: '#f9fafb',
+                      color: '#374151'
+                    }}>
+                      {savedRequests[material.id]}
+                    </div>
+                    <button
+                      onClick={() => handleEditRequest(material.id, savedRequests[material.id])}
+                      disabled={isPurchased}
+                      style={{
+                        padding: '6px 8px',
+                        border: 'none',
+                        borderRadius: '4px',
+                        background: isPurchased ? '#d1d5db' : '#f59e0b',
+                        color: 'white',
+                        fontSize: '10px',
+                        cursor: isPurchased ? 'not-allowed' : 'pointer',
+                        opacity: isPurchased ? 0.5 : 1,
+                        minWidth: '40px'
+                      }}
+                    >
+                      Edit
+                    </button>
+                  </>
+                ) : (
+                  // 편집 상태 - 입력 필드 + 저장 버튼
+                  <>
+                    <input
+                      type="text"
+                      value={userRequirements[material.id] || ''}
+                      onChange={(e) => setUserRequirements({
+                        ...userRequirements,
+                        [material.id]: e.target.value
+                      })}
+                      placeholder="Enter additional request..."
+                      disabled={isPurchased}
+                      style={{
+                        flex: 1,
+                        padding: '6px',
+                        border: '1px solid #d1d5db',
+                        borderRadius: '4px',
+                        fontSize: '11px',
+                        opacity: isPurchased ? 0.5 : 1,
+                        cursor: isPurchased ? 'not-allowed' : 'text'
+                      }}
+                    />
+                    <button
+                      onClick={() => handleSaveRequest(material.id, userRequirements[material.id] || '')}
+                      disabled={isPurchased || savingRequest[material.id]}
+                      style={{
+                        padding: '6px 8px',
+                        border: 'none',
+                        borderRadius: '4px',
+                        background: isPurchased ? '#d1d5db' : '#10b981',
+                        color: 'white',
+                        fontSize: '10px',
+                        cursor: isPurchased || savingRequest[material.id] ? 'not-allowed' : 'pointer',
+                        opacity: isPurchased ? 0.5 : 1,
+                        minWidth: '40px'
+                      }}
+                    >
+                      {savingRequest[material.id] ? '...' : 'Save'}
+                    </button>
+                  </>
+                )}
+              </div>
+              <div style={{ fontSize: '14px', color: '#1f2937' }}>{info.purchaseQuantity}</div>
+              </div>
+            );
+          })}
+        </div>
+      </div>
+
+      {filteredMaterials.length === 0 && (
+        <div style={{
+          textAlign: 'center',
+          padding: '60px 20px',
+          color: '#64748b'
+        }}>
+          <div style={{ fontSize: '18px', fontWeight: '600', marginBottom: '8px' }}>
+            No Valve Materials Found
+          </div>
+          <div style={{ fontSize: '14px' }}>
+            {Object.keys(columnFilters).some(key => columnFilters[key]) 
+              ? 'Try adjusting your filters' 
+              : 'No valve materials available in this BOM'}
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default ValveMaterialsView;

frontend/src/components/bom/materials/index.js

@@ -0,0 +1,10 @@
+// BOM Materials Components
+export { default as PipeMaterialsView } from './PipeMaterialsView';
+export { default as FittingMaterialsView } from './FittingMaterialsView';
+export { default as FlangeMaterialsView } from './FlangeMaterialsView';
+export { default as ValveMaterialsView } from './ValveMaterialsView';
+export { default as GasketMaterialsView } from './GasketMaterialsView';
+export { default as BoltMaterialsView } from './BoltMaterialsView';
+export { default as SupportMaterialsView } from './SupportMaterialsView';
+export { default as SpecialMaterialsView } from './SpecialMaterialsView';
+export { default as UnclassifiedMaterialsView } from './UnclassifiedMaterialsView';

frontend/src/components/bom/shared/FilterableHeader.jsx

@@ -0,0 +1,78 @@
+import React from 'react';
+
+const FilterableHeader = ({ 
+  sortKey, 
+  filterKey, 
+  children, 
+  sortConfig, 
+  onSort, 
+  columnFilters, 
+  onFilterChange, 
+  showFilterDropdown, 
+  setShowFilterDropdown 
+}) => {
+  return (
+    <div className="filterable-header" style={{ position: 'relative' }}>
+      <div style={{ display: 'flex', alignItems: 'center', gap: '8px' }}>
+        <span
+          onClick={() => onSort(sortKey)}
+          style={{ cursor: 'pointer', flex: 1 }}
+        >
+          {children}
+          {sortConfig && sortConfig.key === sortKey && (
+            <span style={{ marginLeft: '4px' }}>
+              {sortConfig.direction === 'asc' ? '↑' : '↓'}
+            </span>
+          )}
+        </span>
+        <button
+          onClick={() => setShowFilterDropdown(showFilterDropdown === filterKey ? null : filterKey)}
+          style={{
+            background: 'none',
+            border: 'none',
+            cursor: 'pointer',
+            padding: '2px',
+            fontSize: '12px',
+            color: '#6b7280'
+          }}
+        >
+          🔍
+        </button>
+      </div>
+      {showFilterDropdown === filterKey && (
+        <div style={{
+          position: 'absolute',
+          top: '100%',
+          left: 0,
+          background: 'white',
+          border: '1px solid #e2e8f0',
+          borderRadius: '6px',
+          padding: '8px',
+          boxShadow: '0 4px 6px rgba(0, 0, 0, 0.1)',
+          zIndex: 1000,
+          minWidth: '150px'
+        }}>
+          <input
+            type="text"
+            placeholder={`Filter ${children}...`}
+            value={columnFilters[filterKey] || ''}
+            onChange={(e) => onFilterChange({
+              ...columnFilters,
+              [filterKey]: e.target.value
+            })}
+            style={{
+              width: '100%',
+              padding: '4px 8px',
+              border: '1px solid #d1d5db',
+              borderRadius: '4px',
+              fontSize: '12px'
+            }}
+            autoFocus
+          />
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default FilterableHeader;

frontend/src/components/bom/shared/MaterialTable.jsx

@@ -0,0 +1,161 @@
+import React from 'react';
+
+const MaterialTable = ({ 
+  children, 
+  className = '',
+  style = {} 
+}) => {
+  return (
+    <div 
+      className={`material-table ${className}`}
+      style={{ 
+        background: 'white', 
+        borderRadius: '12px', 
+        overflow: 'hidden',
+        boxShadow: '0 1px 3px rgba(0, 0, 0, 0.1)',
+        ...style
+      }}
+    >
+      {children}
+    </div>
+  );
+};
+
+const MaterialTableHeader = ({ 
+  children, 
+  gridColumns,
+  className = '' 
+}) => {
+  return (
+    <div 
+      className={`material-table-header ${className}`}
+      style={{
+        display: 'grid',
+        gridTemplateColumns: gridColumns,
+        gap: '16px',
+        padding: '16px',
+        background: '#f8fafc',
+        borderBottom: '1px solid #e2e8f0',
+        fontSize: '14px',
+        fontWeight: '600',
+        color: '#374151'
+      }}
+    >
+      {children}
+    </div>
+  );
+};
+
+const MaterialTableBody = ({ 
+  children, 
+  maxHeight = '600px',
+  className = '' 
+}) => {
+  return (
+    <div 
+      className={`material-table-body ${className}`}
+      style={{ 
+        maxHeight, 
+        overflowY: 'auto' 
+      }}
+    >
+      {children}
+    </div>
+  );
+};
+
+const MaterialTableRow = ({ 
+  children, 
+  gridColumns,
+  isSelected = false,
+  isPurchased = false,
+  isLast = false,
+  onClick,
+  className = '' 
+}) => {
+  return (
+    <div
+      className={`material-table-row ${className}`}
+      onClick={onClick}
+      style={{
+        display: 'grid',
+        gridTemplateColumns: gridColumns,
+        gap: '16px',
+        padding: '16px',
+        borderBottom: !isLast ? '1px solid #f1f5f9' : 'none',
+        background: isSelected ? '#eff6ff' : (isPurchased ? '#fef3c7' : 'white'),
+        transition: 'background 0.15s ease',
+        cursor: onClick ? 'pointer' : 'default'
+      }}
+      onMouseEnter={(e) => {
+        if (!isSelected && !isPurchased && !onClick) {
+          e.target.style.background = '#f8fafc';
+        }
+      }}
+      onMouseLeave={(e) => {
+        if (!isSelected && !isPurchased && !onClick) {
+          e.target.style.background = 'white';
+        }
+      }}
+    >
+      {children}
+    </div>
+  );
+};
+
+const MaterialTableCell = ({ 
+  children, 
+  align = 'left',
+  fontWeight = 'normal',
+  color = '#1f2937',
+  className = '' 
+}) => {
+  return (
+    <div 
+      className={`material-table-cell ${className}`}
+      style={{ 
+        fontSize: '14px', 
+        color, 
+        fontWeight,
+        textAlign: align 
+      }}
+    >
+      {children}
+    </div>
+  );
+};
+
+const MaterialTableEmpty = ({ 
+  icon = '📦',
+  title = 'No Materials Found',
+  message = 'No materials available',
+  className = '' 
+}) => {
+  return (
+    <div 
+      className={`material-table-empty ${className}`}
+      style={{
+        textAlign: 'center',
+        padding: '60px 20px',
+        color: '#64748b'
+      }}
+    >
+      <div style={{ fontSize: '48px', marginBottom: '16px' }}>{icon}</div>
+      <div style={{ fontSize: '18px', fontWeight: '600', marginBottom: '8px' }}>
+        {title}
+      </div>
+      <div style={{ fontSize: '14px' }}>
+        {message}
+      </div>
+    </div>
+  );
+};
+
+// 복합 컴포넌트로 export
+MaterialTable.Header = MaterialTableHeader;
+MaterialTable.Body = MaterialTableBody;
+MaterialTable.Row = MaterialTableRow;
+MaterialTable.Cell = MaterialTableCell;
+MaterialTable.Empty = MaterialTableEmpty;
+
+export default MaterialTable;

frontend/src/components/bom/shared/index.js

@@ -0,0 +1,3 @@
+// BOM Shared Components
+export { default as FilterableHeader } from './FilterableHeader';
+export { default as MaterialTable } from './MaterialTable';

frontend/src/components/bom/tabs/BOMFilesTab.jsx

@@ -0,0 +1,536 @@
+import React, { useState, useEffect } from 'react';
+import api from '../../../api';
+
+const BOMFilesTab = ({ 
+  selectedProject,
+  user,
+  bomFiles,
+  setBomFiles,
+  selectedBOM,
+  onBOMSelect,
+  refreshTrigger 
+}) => {
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState('');
+  const [revisionDialog, setRevisionDialog] = useState({ open: false, file: null });
+  const [groupedFiles, setGroupedFiles] = useState({});
+
+  // BOM 파일 목록 로드 함수
+  const loadBOMFiles = async () => {
+    if (!selectedProject) return;
+    
+    try {
+      setLoading(true);
+      setError('');
+      
+      const projectCode = selectedProject.official_project_code || selectedProject.job_no;
+      const encodedProjectCode = encodeURIComponent(projectCode);
+      const response = await api.get(`/files/project/${encodedProjectCode}`);
+      const files = response.data || [];
+      
+      setBomFiles(files);
+      
+      // BOM 이름별로 그룹화
+      const groups = groupFilesByBOM(files);
+      setGroupedFiles(groups);
+      
+    } catch (err) {
+      console.error('BOM 파일 로드 실패:', err);
+      setError('BOM 파일을 불러오는데 실패했습니다.');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  // BOM 파일 목록 로드
+  useEffect(() => {
+    loadBOMFiles();
+  }, [selectedProject, refreshTrigger, setBomFiles]);
+
+  // 파일을 BOM 이름별로 그룹화
+  const groupFilesByBOM = (fileList) => {
+    const groups = {};
+    
+    fileList.forEach(file => {
+      const bomName = file.bom_name || file.original_filename;
+      if (!groups[bomName]) {
+        groups[bomName] = [];
+      }
+      groups[bomName].push(file);
+    });
+    
+    // 각 그룹 내에서 리비전 번호로 정렬
+    Object.keys(groups).forEach(bomName => {
+      groups[bomName].sort((a, b) => {
+        const revA = parseInt(a.revision?.replace('Rev.', '') || '0');
+        const revB = parseInt(b.revision?.replace('Rev.', '') || '0');
+        return revB - revA; // 최신 리비전이 위로
+      });
+    });
+    
+    return groups;
+  };
+
+  // BOM 선택 처리
+  const handleBOMClick = (bomFile) => {
+    if (onBOMSelect) {
+      onBOMSelect(bomFile);
+    }
+  };
+
+  // 파일 삭제
+  const handleDeleteFile = async (fileId, bomName) => {
+    if (!window.confirm(`이 파일을 삭제하시겠습니까?`)) {
+      return;
+    }
+
+    try {
+      await api.delete(`/files/delete/${fileId}`);
+      
+      // 파일 목록 새로고침
+      const projectCode = selectedProject.official_project_code || selectedProject.job_no;
+      const encodedProjectCode = encodeURIComponent(projectCode);
+      const response = await api.get(`/files/project/${encodedProjectCode}`);
+      const files = response.data || [];
+      setBomFiles(files);
+      setGroupedFiles(groupFilesByBOM(files));
+      
+    } catch (err) {
+      console.error('파일 삭제 실패:', err);
+      setError('파일 삭제에 실패했습니다.');
+    }
+  };
+
+  // 리비전 업로드
+  const handleRevisionUpload = (parentFile) => {
+    setRevisionDialog({
+      open: true,
+      file: parentFile
+    });
+  };
+
+  // 리비전 업로드 성공 핸들러
+  const handleRevisionUploadSuccess = () => {
+    setRevisionDialog({ open: false, file: null });
+    // BOM 파일 목록 새로고침
+    loadBOMFiles();
+  };
+
+  // 파일 업로드 처리
+  const handleFileUpload = async (file) => {
+    if (!file || !revisionDialog.file) return;
+
+    try {
+      const formData = new FormData();
+      formData.append('file', file);
+      formData.append('job_no', selectedProject.job_no);
+      formData.append('parent_file_id', revisionDialog.file.id);
+      formData.append('bom_name', revisionDialog.file.bom_name || revisionDialog.file.original_filename);
+
+      const response = await api.post('/files/upload', formData, {
+        headers: {
+          'Content-Type': 'multipart/form-data',
+        },
+      });
+
+      if (response.data.success) {
+        alert(`리비전 업로드 성공! ${response.data.revision}`);
+        handleRevisionUploadSuccess();
+      } else {
+        alert(response.data.message || '리비전 업로드에 실패했습니다.');
+      }
+    } catch (error) {
+      console.error('리비전 업로드 실패:', error);
+      alert('리비전 업로드에 실패했습니다.');
+    }
+  };
+
+  // 날짜 포맷팅
+  const formatDate = (dateString) => {
+    if (!dateString) return 'N/A';
+    try {
+      return new Date(dateString).toLocaleDateString('ko-KR');
+    } catch {
+      return dateString;
+    }
+  };
+
+  if (loading) {
+    return (
+      <div style={{ 
+        padding: '60px', 
+        textAlign: 'center',
+        color: '#6b7280'
+      }}>
+        <div style={{ fontSize: '24px', marginBottom: '16px' }}>⏳</div>
+        <div>Loading BOM files...</div>
+      </div>
+    );
+  }
+
+  if (error) {
+    return (
+      <div style={{ 
+        padding: '40px',
+        textAlign: 'center'
+      }}>
+        <div style={{
+          background: '#fee2e2',
+          border: '1px solid #fecaca',
+          borderRadius: '8px',
+          padding: '16px',
+          color: '#dc2626'
+        }}>
+          <div style={{ fontSize: '20px', marginBottom: '8px' }}>⚠️</div>
+          {error}
+        </div>
+      </div>
+    );
+  }
+
+  if (bomFiles.length === 0) {
+    return (
+      <div style={{ 
+        padding: '60px', 
+        textAlign: 'center',
+        color: '#6b7280'
+      }}>
+        <div style={{ fontSize: '48px', marginBottom: '16px' }}>📄</div>
+        <h3 style={{ fontSize: '20px', fontWeight: '600', marginBottom: '8px' }}>
+          No BOM Files Found
+        </h3>
+        <p style={{ fontSize: '16px', margin: 0 }}>
+          Upload your first BOM file using the Upload tab
+        </p>
+      </div>
+    );
+  }
+
+  return (
+    <div style={{ padding: '40px' }}>
+      <div style={{ 
+        display: 'flex', 
+        justifyContent: 'space-between', 
+        alignItems: 'center',
+        marginBottom: '32px'
+      }}>
+        <div>
+          <h2 style={{ 
+            fontSize: '24px', 
+            fontWeight: '700', 
+            color: '#0f172a', 
+            margin: '0 0 8px 0' 
+          }}>
+            BOM Files & Revisions
+          </h2>
+          <p style={{ 
+            fontSize: '16px', 
+            color: '#64748b', 
+            margin: 0 
+          }}>
+            Select a BOM file to manage its materials
+          </p>
+        </div>
+        
+        <div style={{
+          background: 'linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%)',
+          padding: '12px 20px',
+          borderRadius: '12px',
+          fontSize: '14px',
+          fontWeight: '600',
+          color: '#1d4ed8'
+        }}>
+          {Object.keys(groupedFiles).length} BOM Groups • {bomFiles.length} Total Files
+        </div>
+      </div>
+
+      {/* BOM 파일 그룹 목록 */}
+      <div style={{ display: 'grid', gap: '24px' }}>
+        {Object.entries(groupedFiles).map(([bomName, files]) => {
+          const latestFile = files[0]; // 최신 리비전
+          const isSelected = selectedBOM?.id === latestFile.id;
+          
+          return (
+            <div key={bomName} style={{
+              background: isSelected ? '#eff6ff' : 'white',
+              border: isSelected ? '2px solid #3b82f6' : '1px solid #e5e7eb',
+              borderRadius: '16px',
+              padding: '24px',
+              transition: 'all 0.2s ease',
+              cursor: 'pointer'
+            }}
+            onClick={() => handleBOMClick(latestFile)}
+            >
+              <div style={{ 
+                display: 'flex', 
+                justifyContent: 'space-between', 
+                alignItems: 'flex-start',
+                marginBottom: '16px'
+              }}>
+                <div style={{ flex: 1 }}>
+                  <h3 style={{ 
+                    fontSize: '20px', 
+                    fontWeight: '600', 
+                    color: isSelected ? '#1d4ed8' : '#374151',
+                    margin: '0 0 8px 0',
+                    display: 'flex',
+                    alignItems: 'center',
+                    gap: '12px'
+                  }}>
+                    <span style={{ fontSize: '24px' }}>📋</span>
+                    {bomName}
+                    {isSelected && (
+                      <span style={{
+                        background: '#3b82f6',
+                        color: 'white',
+                        fontSize: '12px',
+                        padding: '4px 8px',
+                        borderRadius: '6px',
+                        fontWeight: '500'
+                      }}>
+                        SELECTED
+                      </span>
+                    )}
+                  </h3>
+                  
+                  <div style={{ 
+                    display: 'grid', 
+                    gridTemplateColumns: 'repeat(auto-fit, minmax(150px, 1fr))', 
+                    gap: '12px',
+                    fontSize: '14px',
+                    color: '#6b7280'
+                  }}>
+                    <div>
+                      <span style={{ fontWeight: '500' }}>Latest:</span> {latestFile.revision || 'Rev.0'}
+                    </div>
+                    <div>
+                      <span style={{ fontWeight: '500' }}>Revisions:</span> {Math.max(0, files.length - 1)}
+                    </div>
+                    <div>
+                      <span style={{ fontWeight: '500' }}>Updated:</span> {formatDate(latestFile.upload_date)}
+                    </div>
+                    <div>
+                      <span style={{ fontWeight: '500' }}>Size:</span> {latestFile.file_size ? `${Math.round(latestFile.file_size / 1024)} KB` : 'N/A'}
+                    </div>
+                  </div>
+                </div>
+
+                <div style={{ display: 'flex', gap: '8px', marginLeft: '16px' }}>
+                  <button
+                    onClick={(e) => {
+                      e.stopPropagation();
+                      handleRevisionUpload(latestFile);
+                    }}
+                    style={{
+                      padding: '8px 12px',
+                      background: 'white',
+                      color: '#f59e0b',
+                      border: '1px solid #f59e0b',
+                      borderRadius: '8px',
+                      cursor: 'pointer',
+                      fontSize: '12px',
+                      fontWeight: '500',
+                      transition: 'all 0.2s ease'
+                    }}
+                  >
+                    📝 New Revision
+                  </button>
+                  
+                  <button
+                    onClick={(e) => {
+                      e.stopPropagation();
+                      handleDeleteFile(latestFile.id, bomName);
+                    }}
+                    style={{
+                      padding: '8px 12px',
+                      background: '#fee2e2',
+                      color: '#dc2626',
+                      border: '1px solid #fecaca',
+                      borderRadius: '8px',
+                      cursor: 'pointer',
+                      fontSize: '12px',
+                      fontWeight: '500'
+                    }}
+                  >
+                    🗑️ Delete
+                  </button>
+                </div>
+              </div>
+
+              {/* 리비전 히스토리 */}
+              {files.length > 1 && (
+                <div style={{
+                  background: '#f8fafc',
+                  borderRadius: '8px',
+                  padding: '12px',
+                  marginTop: '16px'
+                }}>
+                  <h4 style={{ 
+                    fontSize: '14px', 
+                    fontWeight: '600', 
+                    color: '#374151',
+                    margin: '0 0 8px 0'
+                  }}>
+                    Revision History
+                  </h4>
+                  <div style={{ display: 'flex', gap: '8px', flexWrap: 'wrap' }}>
+                    {files.map((file, index) => (
+                      <div key={file.id} style={{
+                        background: index === 0 ? '#dbeafe' : 'white',
+                        color: index === 0 ? '#1d4ed8' : '#6b7280',
+                        padding: '4px 8px',
+                        borderRadius: '6px',
+                        fontSize: '12px',
+                        fontWeight: '500',
+                        border: '1px solid #e5e7eb'
+                      }}>
+                        {file.revision || 'Rev.0'}
+                        {index === 0 && ' (Latest)'}
+                      </div>
+                    ))}
+                  </div>
+                </div>
+              )}
+
+              {/* 선택 안내 */}
+              {!isSelected && (
+                <div style={{
+                  marginTop: '16px',
+                  padding: '12px',
+                  background: 'rgba(59, 130, 246, 0.05)',
+                  borderRadius: '8px',
+                  textAlign: 'center',
+                  fontSize: '14px',
+                  color: '#3b82f6',
+                  fontWeight: '500'
+                }}>
+                  Click to select this BOM for material management
+                </div>
+              )}
+            </div>
+          );
+        })}
+      </div>
+
+      {/* 향후 기능 안내 */}
+      <div style={{
+        marginTop: '40px',
+        padding: '24px',
+        background: '#f8fafc',
+        borderRadius: '12px',
+        border: '1px solid #e2e8f0'
+      }}>
+        <h3 style={{ 
+          fontSize: '18px', 
+          fontWeight: '600', 
+          color: '#374151', 
+          marginBottom: '16px' 
+        }}>
+          🚧 Coming Soon: Advanced Revision Features
+        </h3>
+        <div style={{ 
+          display: 'grid', 
+          gridTemplateColumns: 'repeat(auto-fit, minmax(200px, 1fr))', 
+          gap: '16px' 
+        }}>
+          <div style={{ textAlign: 'center' }}>
+            <div style={{ fontSize: '24px', marginBottom: '8px' }}>📊</div>
+            <div style={{ fontSize: '14px', fontWeight: '500', color: '#374151' }}>
+              Visual Timeline
+            </div>
+            <div style={{ fontSize: '12px', color: '#6b7280' }}>
+              Interactive revision history
+            </div>
+          </div>
+          <div style={{ textAlign: 'center' }}>
+            <div style={{ fontSize: '24px', marginBottom: '8px' }}>🔍</div>
+            <div style={{ fontSize: '14px', fontWeight: '500', color: '#374151' }}>
+              Diff Comparison
+            </div>
+            <div style={{ fontSize: '12px', color: '#6b7280' }}>
+              Compare changes between revisions
+            </div>
+          </div>
+          <div style={{ textAlign: 'center' }}>
+            <div style={{ fontSize: '24px', marginBottom: '8px' }}>⏪</div>
+            <div style={{ fontSize: '14px', fontWeight: '500', color: '#374151' }}>
+              Rollback System
+            </div>
+            <div style={{ fontSize: '12px', color: '#6b7280' }}>
+              Restore previous versions
+            </div>
+          </div>
+        </div>
+      </div>
+
+      {/* 리비전 업로드 다이얼로그 */}
+      {revisionDialog.open && (
+        <div style={{
+          position: 'fixed',
+          top: 0,
+          left: 0,
+          right: 0,
+          bottom: 0,
+          background: 'rgba(0, 0, 0, 0.5)',
+          display: 'flex',
+          alignItems: 'center',
+          justifyContent: 'center',
+          zIndex: 1000
+        }}>
+          <div style={{
+            background: 'white',
+            borderRadius: '12px',
+            padding: '24px',
+            maxWidth: '500px',
+            width: '90%',
+            boxShadow: '0 20px 25px -5px rgba(0, 0, 0, 0.1)'
+          }}>
+            <h3 style={{ margin: '0 0 16px 0', fontSize: '18px', fontWeight: '600' }}>
+              📝 리비전 업로드: {revisionDialog.file?.original_filename || 'BOM 파일'}
+            </h3>
+            
+            <div style={{ marginBottom: '16px', fontSize: '14px', color: '#6b7280' }}>
+              새로운 리비전 파일을 선택해주세요.
+            </div>
+            
+            <input
+              type="file"
+              accept=".csv,.xlsx,.xls"
+              onChange={(e) => {
+                const file = e.target.files[0];
+                if (file) {
+                  handleFileUpload(file);
+                }
+              }}
+              style={{ 
+                width: '100%', 
+                marginBottom: '16px',
+                padding: '8px',
+                border: '2px dashed #d1d5db',
+                borderRadius: '8px'
+              }}
+            />
+            
+            <div style={{ display: 'flex', gap: '12px', justifyContent: 'flex-end' }}>
+              <button
+                onClick={() => setRevisionDialog({ open: false, file: null })}
+                style={{
+                  padding: '8px 16px',
+                  background: '#f3f4f6',
+                  color: '#374151',
+                  border: 'none',
+                  borderRadius: '6px',
+                  cursor: 'pointer'
+                }}
+              >
+                취소
+              </button>
+            </div>
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default BOMFilesTab;

frontend/src/components/bom/tabs/BOMMaterialsTab.jsx

@@ -0,0 +1,105 @@
+import React from 'react';
+import BOMManagementPage from '../../../pages/BOMManagementPage';
+
+const BOMMaterialsTab = ({ 
+  selectedProject,
+  user,
+  selectedBOM,
+  onNavigate 
+}) => {
+  // BOMManagementPage에 필요한 props 구성
+  const bomManagementProps = {
+    onNavigate,
+    user,
+    selectedProject,
+    fileId: selectedBOM?.id,
+    jobNo: selectedBOM?.job_no || selectedProject?.official_project_code || selectedProject?.job_no,
+    bomName: selectedBOM?.bom_name || selectedBOM?.original_filename,
+    revision: selectedBOM?.revision || 'Rev.0',
+    filename: selectedBOM?.original_filename
+  };
+
+  return (
+    <div style={{ 
+      background: 'white',
+      minHeight: '600px'
+    }}>
+      {/* 헤더 정보 */}
+      <div style={{
+        padding: '24px 40px',
+        borderBottom: '1px solid #e5e7eb',
+        background: '#f8fafc'
+      }}>
+        <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
+          <div>
+            <h2 style={{ 
+              fontSize: '24px', 
+              fontWeight: '700', 
+              color: '#0f172a', 
+              margin: '0 0 8px 0' 
+            }}>
+              Material Management
+            </h2>
+            <p style={{ 
+              fontSize: '16px', 
+              color: '#64748b', 
+              margin: 0 
+            }}>
+              BOM: {selectedBOM?.bom_name || selectedBOM?.original_filename} • {selectedBOM?.revision || 'Rev.0'}
+            </p>
+          </div>
+          
+          <div style={{
+            display: 'grid',
+            gridTemplateColumns: 'repeat(auto-fit, minmax(120px, 1fr))',
+            gap: '12px',
+            fontSize: '12px'
+          }}>
+            <div style={{
+              background: 'linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%)',
+              padding: '8px 12px',
+              borderRadius: '8px',
+              textAlign: 'center'
+            }}>
+              <div style={{ fontSize: '14px', fontWeight: '600', color: '#1d4ed8' }}>
+                {selectedBOM?.id || 'N/A'}
+              </div>
+              <div style={{ color: '#1d4ed8', fontWeight: '500' }}>
+                File ID
+              </div>
+            </div>
+            
+            <div style={{
+              background: 'linear-gradient(135deg, #dcfce7 0%, #bbf7d0 100%)',
+              padding: '8px 12px',
+              borderRadius: '8px',
+              textAlign: 'center'
+            }}>
+              <div style={{ fontSize: '14px', fontWeight: '600', color: '#059669' }}>
+                {selectedBOM?.revision || 'Rev.0'}
+              </div>
+              <div style={{ color: '#059669', fontWeight: '500' }}>
+                Revision
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+
+      {/* BOM 관리 페이지 임베드 */}
+      <div style={{ 
+        background: 'white',
+        // BOMManagementPage의 기본 패딩을 제거하기 위한 스타일 오버라이드
+        '& > div': {
+          padding: '0 !important',
+          background: 'transparent !important',
+          minHeight: 'auto !important'
+        }
+      }}>
+        <BOMManagementPage {...bomManagementProps} />
+      </div>
+    </div>
+  );
+};
+
+export default BOMMaterialsTab;

frontend/src/components/bom/tabs/BOMUploadTab.jsx

@@ -0,0 +1,494 @@
+import React, { useState, useRef, useCallback } from 'react';
+import api from '../../../api';
+
+const BOMUploadTab = ({ 
+  selectedProject,
+  user,
+  onUploadSuccess,
+  onNavigate 
+}) => {
+  const [dragOver, setDragOver] = useState(false);
+  const [uploading, setUploading] = useState(false);
+  const [uploadProgress, setUploadProgress] = useState(0);
+  const [selectedFiles, setSelectedFiles] = useState([]);
+  const [bomName, setBomName] = useState('');
+  const [error, setError] = useState('');
+  const [success, setSuccess] = useState('');
+  const fileInputRef = useRef(null);
+
+  // 파일 검증
+  const validateFile = (file) => {
+    const allowedTypes = [
+      'application/vnd.ms-excel',
+      'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+      'text/csv'
+    ];
+    
+    const maxSize = 50 * 1024 * 1024; // 50MB
+    
+    if (!allowedTypes.includes(file.type) && !file.name.match(/\.(xlsx|xls|csv)$/i)) {
+      return '지원되지 않는 파일 형식입니다. Excel 또는 CSV 파일만 업로드 가능합니다.';
+    }
+    
+    if (file.size > maxSize) {
+      return '파일 크기가 너무 큽니다. 50MB 이하의 파일만 업로드 가능합니다.';
+    }
+    
+    return null;
+  };
+
+  // 파일 선택 처리
+  const handleFileSelect = useCallback((files) => {
+    const fileList = Array.from(files);
+    const validFiles = [];
+    const errors = [];
+
+    fileList.forEach(file => {
+      const error = validateFile(file);
+      if (error) {
+        errors.push(`${file.name}: ${error}`);
+      } else {
+        validFiles.push(file);
+      }
+    });
+
+    if (errors.length > 0) {
+      setError(errors.join('\n'));
+      return;
+    }
+
+    setSelectedFiles(validFiles);
+    setError('');
+    
+    // 첫 번째 파일명을 기본 BOM 이름으로 설정 (확장자 제거)
+    if (validFiles.length > 0 && !bomName) {
+      const fileName = validFiles[0].name;
+      const nameWithoutExt = fileName.replace(/\.[^/.]+$/, '');
+      setBomName(nameWithoutExt);
+    }
+  }, [bomName]);
+
+  // 드래그 앤 드롭 처리
+  const handleDragOver = useCallback((e) => {
+    e.preventDefault();
+    setDragOver(true);
+  }, []);
+
+  const handleDragLeave = useCallback((e) => {
+    e.preventDefault();
+    setDragOver(false);
+  }, []);
+
+  const handleDrop = useCallback((e) => {
+    e.preventDefault();
+    setDragOver(false);
+    handleFileSelect(e.dataTransfer.files);
+  }, [handleFileSelect]);
+
+  // 파일 선택 버튼 클릭
+  const handleFileButtonClick = () => {
+    fileInputRef.current?.click();
+  };
+
+  // 파일 업로드
+  const handleUpload = async () => {
+    if (selectedFiles.length === 0) {
+      setError('업로드할 파일을 선택해주세요.');
+      return;
+    }
+
+    if (!bomName.trim()) {
+      setError('BOM 이름을 입력해주세요.');
+      return;
+    }
+
+    if (!selectedProject) {
+      setError('프로젝트를 선택해주세요.');
+      return;
+    }
+
+    try {
+      setUploading(true);
+      setUploadProgress(0);
+      setError('');
+      setSuccess('');
+
+      let uploadedFile = null;
+
+      for (let i = 0; i < selectedFiles.length; i++) {
+        const file = selectedFiles[i];
+        const formData = new FormData();
+        
+        formData.append('file', file);
+        formData.append('job_no', selectedProject.official_project_code || selectedProject.job_no);
+        formData.append('bom_name', bomName.trim());
+        formData.append('revision', 'Rev.0'); // 새 업로드는 항상 Rev.0
+
+        const response = await api.post('/files/upload', formData, {
+          headers: { 'Content-Type': 'multipart/form-data' },
+          onUploadProgress: (progressEvent) => {
+            const progress = Math.round(
+              ((i * 100) + (progressEvent.loaded * 100) / progressEvent.total) / selectedFiles.length
+            );
+            setUploadProgress(progress);
+          }
+        });
+
+        if (!response.data?.success) {
+          throw new Error(response.data?.message || '업로드 실패');
+        }
+
+        // 첫 번째 파일의 정보를 저장
+        if (i === 0) {
+          uploadedFile = {
+            id: response.data.file_id,
+            bom_name: bomName.trim(),
+            revision: 'Rev.0',
+            job_no: selectedProject.official_project_code || selectedProject.job_no,
+            original_filename: file.name
+          };
+        }
+      }
+
+      setSuccess(`${selectedFiles.length}개 파일이 성공적으로 업로드되었습니다!`);
+      
+      // 업로드 성공 즉시 콜백 호출 (파일 목록 새로고침)
+      if (onUploadSuccess) {
+        onUploadSuccess(uploadedFile);
+      }
+      
+      // 파일 초기화
+      setSelectedFiles([]);
+      setBomName('');
+
+    } catch (err) {
+      console.error('업로드 실패:', err);
+      setError(`업로드 실패: ${err.response?.data?.detail || err.message}`);
+    } finally {
+      setUploading(false);
+      setUploadProgress(0);
+    }
+  };
+
+  // 파일 제거
+  const removeFile = (index) => {
+    const newFiles = selectedFiles.filter((_, i) => i !== index);
+    setSelectedFiles(newFiles);
+    
+    if (newFiles.length === 0) {
+      setBomName('');
+    }
+  };
+
+  // 파일 크기 포맷팅
+  const formatFileSize = (bytes) => {
+    if (bytes === 0) return '0 Bytes';
+    const k = 1024;
+    const sizes = ['Bytes', 'KB', 'MB', 'GB'];
+    const i = Math.floor(Math.log(bytes) / Math.log(k));
+    return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
+  };
+
+  return (
+    <div style={{ padding: '40px' }}>
+      {/* BOM 이름 입력 */}
+      <div style={{ marginBottom: '32px' }}>
+        <label style={{
+          display: 'block',
+          fontSize: '16px',
+          fontWeight: '600',
+          color: '#374151',
+          marginBottom: '8px'
+        }}>
+          BOM Name
+        </label>
+        <input
+          type="text"
+          value={bomName}
+          onChange={(e) => setBomName(e.target.value)}
+          placeholder="Enter BOM name..."
+          style={{
+            width: '100%',
+            padding: '12px 16px',
+            border: '2px solid #e5e7eb',
+            borderRadius: '12px',
+            fontSize: '16px',
+            transition: 'border-color 0.2s ease',
+            outline: 'none'
+          }}
+          onFocus={(e) => e.target.style.borderColor = '#3b82f6'}
+          onBlur={(e) => e.target.style.borderColor = '#e5e7eb'}
+        />
+      </div>
+
+      {/* 파일 드롭 영역 */}
+      <div
+        onDragOver={handleDragOver}
+        onDragLeave={handleDragLeave}
+        onDrop={handleDrop}
+        style={{
+          border: `3px dashed ${dragOver ? '#3b82f6' : '#d1d5db'}`,
+          borderRadius: '16px',
+          padding: '60px 40px',
+          textAlign: 'center',
+          background: dragOver ? '#eff6ff' : '#f9fafb',
+          transition: 'all 0.3s ease',
+          cursor: 'pointer',
+          marginBottom: '24px'
+        }}
+        onClick={handleFileButtonClick}
+      >
+        <div style={{ fontSize: '48px', marginBottom: '16px' }}>
+          {dragOver ? '📁' : '📄'}
+        </div>
+        <h3 style={{ 
+          fontSize: '20px', 
+          fontWeight: '600', 
+          color: '#374151', 
+          margin: '0 0 8px 0' 
+        }}>
+          {dragOver ? 'Drop files here' : 'Upload BOM Files'}
+        </h3>
+        <p style={{ 
+          fontSize: '16px', 
+          color: '#6b7280', 
+          margin: '0 0 16px 0' 
+        }}>
+          Drag and drop your Excel or CSV files here, or click to browse
+        </p>
+        <div style={{
+          display: 'inline-flex',
+          alignItems: 'center',
+          gap: '8px',
+          padding: '8px 16px',
+          background: 'rgba(59, 130, 246, 0.1)',
+          borderRadius: '8px',
+          fontSize: '14px',
+          color: '#3b82f6'
+        }}>
+          <span>📋</span>
+          Supported: .xlsx, .xls, .csv (Max 50MB)
+        </div>
+      </div>
+
+      {/* 숨겨진 파일 입력 */}
+      <input
+        ref={fileInputRef}
+        type="file"
+        multiple
+        accept=".xlsx,.xls,.csv"
+        onChange={(e) => handleFileSelect(e.target.files)}
+        style={{ display: 'none' }}
+      />
+
+      {/* 선택된 파일 목록 */}
+      {selectedFiles.length > 0 && (
+        <div style={{ marginBottom: '24px' }}>
+          <h4 style={{ 
+            fontSize: '18px', 
+            fontWeight: '600', 
+            color: '#374151', 
+            marginBottom: '16px' 
+          }}>
+            Selected Files ({selectedFiles.length})
+          </h4>
+          <div style={{ 
+            background: '#f8fafc', 
+            borderRadius: '12px', 
+            padding: '16px' 
+          }}>
+            {selectedFiles.map((file, index) => (
+              <div key={index} style={{
+                display: 'flex',
+                justifyContent: 'space-between',
+                alignItems: 'center',
+                padding: '12px 16px',
+                background: 'white',
+                borderRadius: '8px',
+                marginBottom: index < selectedFiles.length - 1 ? '8px' : '0',
+                boxShadow: '0 1px 3px rgba(0, 0, 0, 0.1)'
+              }}>
+                <div style={{ display: 'flex', alignItems: 'center', gap: '12px' }}>
+                  <span style={{ fontSize: '20px' }}>📄</span>
+                  <div>
+                    <div style={{ fontWeight: '500', color: '#374151' }}>
+                      {file.name}
+                    </div>
+                    <div style={{ fontSize: '14px', color: '#6b7280' }}>
+                      {formatFileSize(file.size)}
+                    </div>
+                  </div>
+                </div>
+                <button
+                  onClick={() => removeFile(index)}
+                  style={{
+                    background: '#fee2e2',
+                    color: '#dc2626',
+                    border: 'none',
+                    borderRadius: '6px',
+                    padding: '6px 12px',
+                    cursor: 'pointer',
+                    fontSize: '12px',
+                    fontWeight: '500'
+                  }}
+                >
+                  Remove
+                </button>
+              </div>
+            ))}
+          </div>
+        </div>
+      )}
+
+      {/* 업로드 진행률 */}
+      {uploading && (
+        <div style={{ marginBottom: '24px' }}>
+          <div style={{
+            display: 'flex',
+            justifyContent: 'space-between',
+            alignItems: 'center',
+            marginBottom: '8px'
+          }}>
+            <span style={{ fontSize: '14px', fontWeight: '500', color: '#374151' }}>
+              Uploading...
+            </span>
+            <span style={{ fontSize: '14px', fontWeight: '500', color: '#3b82f6' }}>
+              {uploadProgress}%
+            </span>
+          </div>
+          <div style={{
+            width: '100%',
+            height: '8px',
+            background: '#e5e7eb',
+            borderRadius: '4px',
+            overflow: 'hidden'
+          }}>
+            <div style={{
+              width: `${uploadProgress}%`,
+              height: '100%',
+              background: 'linear-gradient(90deg, #3b82f6 0%, #1d4ed8 100%)',
+              transition: 'width 0.3s ease'
+            }} />
+          </div>
+        </div>
+      )}
+
+      {/* 에러 메시지 */}
+      {error && (
+        <div style={{
+          background: '#fee2e2',
+          border: '1px solid #fecaca',
+          borderRadius: '8px',
+          padding: '12px 16px',
+          marginBottom: '24px'
+        }}>
+          <div style={{ display: 'flex', alignItems: 'center', gap: '8px' }}>
+            <span style={{ fontSize: '16px' }}>⚠️</span>
+            <div style={{ fontSize: '14px', color: '#dc2626', whiteSpace: 'pre-line' }}>
+              {error}
+            </div>
+          </div>
+        </div>
+      )}
+
+      {/* 성공 메시지 */}
+      {success && (
+        <div style={{
+          background: '#dcfce7',
+          border: '1px solid #bbf7d0',
+          borderRadius: '8px',
+          padding: '12px 16px',
+          marginBottom: '24px'
+        }}>
+          <div style={{ display: 'flex', alignItems: 'center', gap: '8px' }}>
+            <span style={{ fontSize: '16px' }}>✅</span>
+            <div style={{ fontSize: '14px', color: '#059669' }}>
+              {success}
+            </div>
+          </div>
+        </div>
+      )}
+
+      {/* 업로드 버튼 */}
+      <div style={{ display: 'flex', gap: '16px', justifyContent: 'flex-end' }}>
+        <button
+          onClick={handleUpload}
+          disabled={uploading || selectedFiles.length === 0 || !bomName.trim()}
+          style={{
+            padding: '12px 32px',
+            background: (uploading || selectedFiles.length === 0 || !bomName.trim()) 
+              ? '#d1d5db' 
+              : 'linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%)',
+            color: 'white',
+            border: 'none',
+            borderRadius: '12px',
+            cursor: (uploading || selectedFiles.length === 0 || !bomName.trim()) 
+              ? 'not-allowed' 
+              : 'pointer',
+            fontSize: '16px',
+            fontWeight: '600',
+            transition: 'all 0.2s ease'
+          }}
+        >
+          {uploading ? 'Uploading...' : 'Upload BOM'}
+        </button>
+      </div>
+
+      {/* 가이드 정보 */}
+      <div style={{
+        marginTop: '40px',
+        padding: '24px',
+        background: '#f8fafc',
+        borderRadius: '12px',
+        border: '1px solid #e2e8f0'
+      }}>
+        <h3 style={{ 
+          fontSize: '18px', 
+          fontWeight: '600', 
+          color: '#374151', 
+          marginBottom: '16px' 
+        }}>
+          📋 Upload Guidelines
+        </h3>
+        <div style={{ 
+          display: 'grid', 
+          gridTemplateColumns: 'repeat(auto-fit, minmax(250px, 1fr))', 
+          gap: '20px' 
+        }}>
+          <div>
+            <h4 style={{ fontSize: '14px', fontWeight: '600', color: '#059669', marginBottom: '8px' }}>
+              ✅ Supported Formats
+            </h4>
+            <ul style={{ margin: 0, paddingLeft: '16px', color: '#6b7280', fontSize: '14px' }}>
+              <li>Excel files (.xlsx, .xls)</li>
+              <li>CSV files (.csv)</li>
+              <li>Maximum file size: 50MB</li>
+            </ul>
+          </div>
+          <div>
+            <h4 style={{ fontSize: '14px', fontWeight: '600', color: '#3b82f6', marginBottom: '8px' }}>
+              📊 Required Columns
+            </h4>
+            <ul style={{ margin: 0, paddingLeft: '16px', color: '#6b7280', fontSize: '14px' }}>
+              <li>Description (자재명/품명)</li>
+              <li>Quantity (수량)</li>
+              <li>Size information (사이즈)</li>
+            </ul>
+          </div>
+          <div>
+            <h4 style={{ fontSize: '14px', fontWeight: '600', color: '#f59e0b', marginBottom: '8px' }}>
+              ⚡ Auto Processing
+            </h4>
+            <ul style={{ margin: 0, paddingLeft: '16px', color: '#6b7280', fontSize: '14px' }}>
+              <li>Automatic material classification</li>
+              <li>WELD GAP items excluded</li>
+              <li>Ready for material management</li>
+            </ul>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+};
+
+export default BOMUploadTab;

frontend/src/components/common/ErrorBoundary.jsx

@@ -0,0 +1,163 @@
+import React from 'react';
+
+class ErrorBoundary extends React.Component {
+  constructor(props) {
+    super(props);
+    this.state = { hasError: false, error: null, errorInfo: null };
+  }
+
+  static getDerivedStateFromError(error) {
+    return { hasError: true };
+  }
+
+  componentDidCatch(error, errorInfo) {
+    this.setState({
+      error: error,
+      errorInfo: errorInfo
+    });
+
+    // 에러 로깅
+    console.error('ErrorBoundary caught an error:', error, errorInfo);
+    
+    // 에러 컨텍스트 정보 로깅
+    if (this.props.errorContext) {
+      console.error('Error context:', this.props.errorContext);
+    }
+  }
+
+  render() {
+    if (this.state.hasError) {
+      return (
+        <div style={{
+          display: 'flex',
+          flexDirection: 'column',
+          justifyContent: 'center',
+          alignItems: 'center',
+          height: '100vh',
+          background: 'linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%)',
+          padding: '40px'
+        }}>
+          <div style={{
+            background: 'rgba(255, 255, 255, 0.95)',
+            backdropFilter: 'blur(10px)',
+            borderRadius: '20px',
+            padding: '40px',
+            boxShadow: '0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04)',
+            border: '1px solid rgba(255, 255, 255, 0.2)',
+            textAlign: 'center',
+            maxWidth: '600px'
+          }}>
+            <div style={{ fontSize: '64px', marginBottom: '24px' }}>⚠️</div>
+            
+            <h2 style={{
+              fontSize: '28px',
+              fontWeight: '700',
+              color: '#dc2626',
+              margin: '0 0 16px 0',
+              letterSpacing: '-0.025em'
+            }}>
+              Something went wrong
+            </h2>
+            
+            <p style={{
+              fontSize: '16px',
+              color: '#64748b',
+              marginBottom: '32px',
+              lineHeight: '1.6'
+            }}>
+              An unexpected error occurred. Please try refreshing the page or contact support if the problem persists.
+            </p>
+
+            <div style={{ display: 'flex', gap: '16px', justifyContent: 'center' }}>
+              <button
+                onClick={() => window.location.reload()}
+                style={{
+                  background: 'linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%)',
+                  color: 'white',
+                  border: 'none',
+                  borderRadius: '12px',
+                  padding: '12px 24px',
+                  cursor: 'pointer',
+                  fontSize: '14px',
+                  fontWeight: '600',
+                  transition: 'all 0.2s ease'
+                }}
+                onMouseEnter={(e) => {
+                  e.target.style.transform = 'translateY(-2px)';
+                  e.target.style.boxShadow = '0 8px 25px 0 rgba(59, 130, 246, 0.5)';
+                }}
+                onMouseLeave={(e) => {
+                  e.target.style.transform = 'translateY(0)';
+                  e.target.style.boxShadow = 'none';
+                }}
+              >
+                Refresh Page
+              </button>
+              
+              <button
+                onClick={() => this.setState({ hasError: false, error: null, errorInfo: null })}
+                style={{
+                  background: 'white',
+                  color: '#6b7280',
+                  border: '1px solid #d1d5db',
+                  borderRadius: '12px',
+                  padding: '12px 24px',
+                  cursor: 'pointer',
+                  fontSize: '14px',
+                  fontWeight: '600',
+                  transition: 'all 0.2s ease'
+                }}
+                onMouseEnter={(e) => {
+                  e.target.style.background = '#f9fafb';
+                  e.target.style.borderColor = '#9ca3af';
+                }}
+                onMouseLeave={(e) => {
+                  e.target.style.background = 'white';
+                  e.target.style.borderColor = '#d1d5db';
+                }}
+              >
+                Try Again
+              </button>
+            </div>
+
+            {/* 개발 환경에서만 에러 상세 정보 표시 */}
+            {process.env.NODE_ENV === 'development' && this.state.error && (
+              <details style={{
+                marginTop: '32px',
+                textAlign: 'left',
+                background: '#f8fafc',
+                padding: '16px',
+                borderRadius: '8px',
+                border: '1px solid #e2e8f0'
+              }}>
+                <summary style={{
+                  cursor: 'pointer',
+                  fontWeight: '600',
+                  color: '#374151',
+                  marginBottom: '8px'
+                }}>
+                  Error Details (Development)
+                </summary>
+                <pre style={{
+                  fontSize: '12px',
+                  color: '#dc2626',
+                  overflow: 'auto',
+                  whiteSpace: 'pre-wrap',
+                  wordBreak: 'break-word'
+                }}>
+                  {this.state.error && this.state.error.toString()}
+                  <br />
+                  {this.state.errorInfo.componentStack}
+                </pre>
+              </details>
+            )}
+          </div>
+        </div>
+      );
+    }
+
+    return this.props.children;
+  }
+}
+
+export default ErrorBoundary;

frontend/src/components/common/UserMenu.jsx

@@ -0,0 +1,219 @@
+import React, { useState } from 'react';
+
+const UserMenu = ({ user, onNavigate, onLogout }) => {
+  const [showUserMenu, setShowUserMenu] = useState(false);
+
+  return (
+    <div style={{ position: 'relative' }}>
+      <button
+        onClick={() => setShowUserMenu(!showUserMenu)}
+        style={{
+          display: 'flex',
+          alignItems: 'center',
+          gap: '8px',
+          background: '#f8f9fa',
+          border: '1px solid #e9ecef',
+          borderRadius: '8px',
+          padding: '8px 12px',
+          cursor: 'pointer',
+          fontSize: '14px',
+          fontWeight: '500',
+          color: '#495057',
+          transition: 'all 0.2s ease'
+        }}
+        onMouseEnter={(e) => {
+          e.target.style.background = '#e9ecef';
+          e.target.style.borderColor = '#dee2e6';
+        }}
+        onMouseLeave={(e) => {
+          e.target.style.background = '#f8f9fa';
+          e.target.style.borderColor = '#e9ecef';
+        }}
+      >
+        <div style={{
+          width: '32px',
+          height: '32px',
+          borderRadius: '50%',
+          background: 'linear-gradient(135deg, #667eea 0%, #764ba2 100%)',
+          display: 'flex',
+          alignItems: 'center',
+          justifyContent: 'center',
+          color: 'white',
+          fontSize: '14px',
+          fontWeight: '600'
+        }}>
+          {(user?.name || user?.username || 'U').charAt(0).toUpperCase()}
+        </div>
+        <div style={{ textAlign: 'left' }}>
+          <div style={{ fontSize: '14px', fontWeight: '600', color: '#2d3748' }}>
+            {user?.name || user?.username}
+          </div>
+          <div style={{ fontSize: '12px', color: '#6c757d' }}>
+            {user?.role === 'system' ? '시스템 관리자' : 
+             user?.role === 'admin' ? '관리자' : '사용자'}
+          </div>
+        </div>
+        <div style={{ 
+          fontSize: '12px', 
+          color: '#6c757d',
+          transform: showUserMenu ? 'rotate(180deg)' : 'rotate(0deg)',
+          transition: 'transform 0.2s ease'
+        }}>
+          ▼
+        </div>
+      </button>
+
+      {/* 드롭다운 메뉴 */}
+      {showUserMenu && (
+        <div style={{
+          position: 'absolute',
+          top: '100%',
+          right: 0,
+          marginTop: '8px',
+          background: 'white',
+          border: '1px solid #e2e8f0',
+          borderRadius: '8px',
+          boxShadow: '0 4px 6px rgba(0, 0, 0, 0.1)',
+          zIndex: 1050,
+          minWidth: '200px'
+        }}>
+          <div style={{ padding: '8px 0' }}>
+            <div style={{ padding: '8px 16px', borderBottom: '1px solid #f1f3f4' }}>
+              <div style={{ fontSize: '14px', fontWeight: '600', color: '#2d3748' }}>
+                {user?.name || user?.username}
+              </div>
+              <div style={{ fontSize: '12px', color: '#6c757d' }}>
+                {user?.email || '이메일 없음'}
+              </div>
+            </div>
+            
+            <button
+              onClick={() => {
+                onNavigate('account-settings');
+                setShowUserMenu(false);
+              }}
+              style={{
+                width: '100%',
+                padding: '12px 16px',
+                border: 'none',
+                background: 'none',
+                textAlign: 'left',
+                cursor: 'pointer',
+                fontSize: '14px',
+                display: 'flex',
+                alignItems: 'center',
+                gap: '8px',
+                ':hover': { background: '#f8f9fa' }
+              }}
+              onMouseEnter={(e) => e.target.style.background = '#f8f9fa'}
+              onMouseLeave={(e) => e.target.style.background = 'none'}
+            >
+              ⚙️ 계정 설정
+            </button>
+            
+            {user?.role === 'admin' && (
+              <>
+                <button
+                  onClick={() => {
+                    onNavigate('user-management');
+                    setShowUserMenu(false);
+                  }}
+                  style={{
+                    width: '100%',
+                    padding: '12px 16px',
+                    border: 'none',
+                    background: 'none',
+                    textAlign: 'left',
+                    cursor: 'pointer',
+                    fontSize: '14px',
+                    display: 'flex',
+                    alignItems: 'center',
+                    gap: '8px'
+                  }}
+                  onMouseEnter={(e) => e.target.style.background = '#f8f9fa'}
+                  onMouseLeave={(e) => e.target.style.background = 'none'}
+                >
+                  👥 사용자 관리
+                </button>
+                
+                <button
+                  onClick={() => {
+                    onNavigate('system-settings');
+                    setShowUserMenu(false);
+                  }}
+                  style={{
+                    width: '100%',
+                    padding: '12px 16px',
+                    border: 'none',
+                    background: 'none',
+                    textAlign: 'left',
+                    cursor: 'pointer',
+                    fontSize: '14px',
+                    display: 'flex',
+                    alignItems: 'center',
+                    gap: '8px'
+                  }}
+                  onMouseEnter={(e) => e.target.style.background = '#f8f9fa'}
+                  onMouseLeave={(e) => e.target.style.background = 'none'}
+                >
+                  🔧 시스템 설정
+                </button>
+                
+                <button
+                  onClick={() => {
+                    onNavigate('system-logs');
+                    setShowUserMenu(false);
+                  }}
+                  style={{
+                    width: '100%',
+                    padding: '12px 16px',
+                    border: 'none',
+                    background: 'none',
+                    textAlign: 'left',
+                    cursor: 'pointer',
+                    fontSize: '14px',
+                    display: 'flex',
+                    alignItems: 'center',
+                    gap: '8px'
+                  }}
+                  onMouseEnter={(e) => e.target.style.background = '#f8f9fa'}
+                  onMouseLeave={(e) => e.target.style.background = 'none'}
+                >
+                  📊 시스템 로그
+                </button>
+              </>
+            )}
+            
+            <div style={{ borderTop: '1px solid #f1f3f4', marginTop: '4px' }}>
+              <button
+                onClick={() => {
+                  onLogout();
+                  setShowUserMenu(false);
+                }}
+                style={{
+                  width: '100%',
+                  padding: '12px 16px',
+                  border: 'none',
+                  background: 'none',
+                  textAlign: 'left',
+                  cursor: 'pointer',
+                  fontSize: '14px',
+                  color: '#dc3545',
+                  display: 'flex',
+                  alignItems: 'center',
+                  gap: '8px'
+                }}
+                onMouseEnter={(e) => e.target.style.background = '#f8f9fa'}
+                onMouseLeave={(e) => e.target.style.background = 'none'}
+              >
+                🚪 로그아웃
+              </button>
+            </div>
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default UserMenu;

frontend/src/components/common/index.js

@@ -0,0 +1,3 @@
+// Common Components
+export { default as UserMenu } from './UserMenu';
+export { default as ErrorBoundary } from './ErrorBoundary';

frontend/src/components/revision/RevisionManagementPanel.jsx

@@ -0,0 +1,541 @@
+/**
+ * 리비전 관리 패널 컴포넌트
+ * BOM 관리 페이지에 통합되어 리비전 기능을 제공
+ */
+
+import React, { useState, useEffect } from 'react';
+import { useRevisionManagement } from '../../hooks/useRevisionManagement';
+
+const RevisionManagementPanel = ({ 
+  jobNo, 
+  currentFileId, 
+  previousFileId, 
+  onRevisionComplete,
+  onRevisionCancel 
+}) => {
+  const {
+    loading,
+    error,
+    currentSession,
+    sessionStatus,
+    createRevisionSession,
+    getSessionStatus,
+    compareCategory,
+    getSessionChanges,
+    processRevisionAction,
+    completeSession,
+    cancelSession,
+    getRevisionSummary,
+    getSupportedCategories,
+    clearError
+  } = useRevisionManagement();
+
+  const [categories, setCategories] = useState([]);
+  const [selectedCategory, setSelectedCategory] = useState(null);
+  const [categoryChanges, setCategoryChanges] = useState({});
+  const [revisionSummary, setRevisionSummary] = useState(null);
+  const [processingActions, setProcessingActions] = useState(new Set());
+
+  // 컴포넌트 초기화
+  useEffect(() => {
+    initializeRevisionPanel();
+  }, [currentFileId, previousFileId]);
+
+  // 세션 상태 모니터링
+  useEffect(() => {
+    if (currentSession?.session_id) {
+      const interval = setInterval(() => {
+        refreshSessionStatus();
+      }, 5000); // 5초마다 상태 갱신
+
+      return () => clearInterval(interval);
+    }
+  }, [currentSession]);
+
+  const initializeRevisionPanel = async () => {
+    try {
+      // 지원 카테고리 로드
+      const categoriesResult = await getSupportedCategories();
+      if (categoriesResult.success) {
+        setCategories(categoriesResult.data);
+      }
+
+      // 리비전 세션 생성
+      if (currentFileId && previousFileId) {
+        const sessionResult = await createRevisionSession(jobNo, currentFileId, previousFileId);
+        if (sessionResult.success) {
+          console.log('✅ 리비전 세션 생성 완료');
+          await refreshSessionStatus();
+        }
+      }
+    } catch (error) {
+      console.error('리비전 패널 초기화 실패:', error);
+    }
+  };
+
+  const refreshSessionStatus = async () => {
+    if (currentSession?.session_id) {
+      try {
+        await getSessionStatus(currentSession.session_id);
+        await loadRevisionSummary();
+      } catch (error) {
+        console.error('세션 상태 갱신 실패:', error);
+      }
+    }
+  };
+
+  const loadRevisionSummary = async () => {
+    if (currentSession?.session_id) {
+      try {
+        const summaryResult = await getRevisionSummary(currentSession.session_id);
+        if (summaryResult.success) {
+          setRevisionSummary(summaryResult.data);
+        }
+      } catch (error) {
+        console.error('리비전 요약 로드 실패:', error);
+      }
+    }
+  };
+
+  const handleCategoryCompare = async (category) => {
+    if (!currentSession?.session_id) return;
+
+    try {
+      const result = await compareCategory(currentSession.session_id, category);
+      if (result.success) {
+        // 변경사항 로드
+        const changesResult = await getSessionChanges(currentSession.session_id, category);
+        if (changesResult.success) {
+          setCategoryChanges(prev => ({
+            ...prev,
+            [category]: changesResult.data.changes
+          }));
+        }
+        
+        await refreshSessionStatus();
+      }
+    } catch (error) {
+      console.error(`카테고리 ${category} 비교 실패:`, error);
+    }
+  };
+
+  const handleActionProcess = async (changeId, action, notes = '') => {
+    setProcessingActions(prev => new Set(prev).add(changeId));
+
+    try {
+      const result = await processRevisionAction(changeId, action, notes);
+      if (result.success) {
+        // 해당 카테고리 변경사항 새로고침
+        if (selectedCategory) {
+          const changesResult = await getSessionChanges(currentSession.session_id, selectedCategory);
+          if (changesResult.success) {
+            setCategoryChanges(prev => ({
+              ...prev,
+              [selectedCategory]: changesResult.data.changes
+            }));
+          }
+        }
+        
+        await refreshSessionStatus();
+      }
+    } catch (error) {
+      console.error('액션 처리 실패:', error);
+    } finally {
+      setProcessingActions(prev => {
+        const newSet = new Set(prev);
+        newSet.delete(changeId);
+        return newSet;
+      });
+    }
+  };
+
+  const handleCompleteRevision = async () => {
+    if (!currentSession?.session_id) return;
+
+    try {
+      const result = await completeSession(currentSession.session_id);
+      if (result.success) {
+        onRevisionComplete?.(result.data);
+      }
+    } catch (error) {
+      console.error('리비전 완료 실패:', error);
+    }
+  };
+
+  const handleCancelRevision = async (reason = '') => {
+    if (!currentSession?.session_id) return;
+
+    try {
+      const result = await cancelSession(currentSession.session_id, reason);
+      if (result.success) {
+        onRevisionCancel?.(result.data);
+      }
+    } catch (error) {
+      console.error('리비전 취소 실패:', error);
+    }
+  };
+
+  const getActionColor = (action) => {
+    const colors = {
+      'new_material': '#10b981',
+      'additional_purchase': '#f59e0b',
+      'inventory_transfer': '#8b5cf6',
+      'purchase_cancel': '#ef4444',
+      'quantity_update': '#3b82f6',
+      'maintain': '#6b7280'
+    };
+    return colors[action] || '#6b7280';
+  };
+
+  const getActionLabel = (action) => {
+    const labels = {
+      'new_material': '신규 자재',
+      'additional_purchase': '추가 구매',
+      'inventory_transfer': '재고 이관',
+      'purchase_cancel': '구매 취소',
+      'quantity_update': '수량 업데이트',
+      'maintain': '유지'
+    };
+    return labels[action] || action;
+  };
+
+  if (!currentSession) {
+    return (
+      <div style={{
+        padding: '20px',
+        textAlign: 'center',
+        background: '#f8fafc',
+        borderRadius: '12px',
+        border: '2px dashed #cbd5e1'
+      }}>
+        <div style={{ fontSize: '18px', color: '#64748b', marginBottom: '8px' }}>
+          🔄 리비전 세션 초기화 중...
+        </div>
+        <div style={{ fontSize: '14px', color: '#94a3b8' }}>
+          자재 비교를 위한 세션을 준비하고 있습니다.
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <div style={{
+      background: 'white',
+      borderRadius: '16px',
+      boxShadow: '0 10px 25px -5px rgba(0, 0, 0, 0.1)',
+      border: '1px solid rgba(255, 255, 255, 0.2)',
+      overflow: 'hidden'
+    }}>
+      {/* 헤더 */}
+      <div style={{
+        background: 'linear-gradient(135deg, #667eea 0%, #764ba2 100%)',
+        color: 'white',
+        padding: '20px 24px',
+        display: 'flex',
+        justifyContent: 'space-between',
+        alignItems: 'center'
+      }}>
+        <div>
+          <h3 style={{ margin: 0, fontSize: '20px', fontWeight: '600' }}>
+            📊 리비전 관리
+          </h3>
+          <p style={{ margin: '4px 0 0 0', fontSize: '14px', opacity: 0.9 }}>
+            Job: {jobNo} | 세션 ID: {currentSession.session_id}
+          </p>
+        </div>
+        
+        <div style={{ display: 'flex', gap: '8px' }}>
+          <button
+            onClick={handleCompleteRevision}
+            disabled={loading}
+            style={{
+              background: '#10b981',
+              color: 'white',
+              border: 'none',
+              borderRadius: '8px',
+              padding: '8px 16px',
+              fontSize: '14px',
+              fontWeight: '500',
+              cursor: loading ? 'not-allowed' : 'pointer',
+              opacity: loading ? 0.6 : 1
+            }}
+          >
+            ✅ 완료
+          </button>
+          <button
+            onClick={() => handleCancelRevision('사용자 요청')}
+            disabled={loading}
+            style={{
+              background: '#ef4444',
+              color: 'white',
+              border: 'none',
+              borderRadius: '8px',
+              padding: '8px 16px',
+              fontSize: '14px',
+              fontWeight: '500',
+              cursor: loading ? 'not-allowed' : 'pointer',
+              opacity: loading ? 0.6 : 1
+            }}
+          >
+            ❌ 취소
+          </button>
+        </div>
+      </div>
+
+      {/* 에러 메시지 */}
+      {error && (
+        <div style={{
+          background: '#fef2f2',
+          border: '1px solid #fecaca',
+          color: '#dc2626',
+          padding: '12px 24px',
+          display: 'flex',
+          justifyContent: 'space-between',
+          alignItems: 'center'
+        }}>
+          <span>⚠️ {error}</span>
+          <button
+            onClick={clearError}
+            style={{
+              background: 'none',
+              border: 'none',
+              color: '#dc2626',
+              cursor: 'pointer',
+              fontSize: '16px'
+            }}
+          >
+            ✕
+          </button>
+        </div>
+      )}
+
+      {/* 진행 상황 */}
+      {sessionStatus && (
+        <div style={{ padding: '20px 24px', borderBottom: '1px solid #e2e8f0' }}>
+          <div style={{
+            display: 'grid',
+            gridTemplateColumns: 'repeat(auto-fit, minmax(120px, 1fr))',
+            gap: '16px',
+            marginBottom: '16px'
+          }}>
+            <div style={{ textAlign: 'center' }}>
+              <div style={{ fontSize: '24px', fontWeight: '700', color: '#10b981' }}>
+                {sessionStatus.session_info.added_count || 0}
+              </div>
+              <div style={{ fontSize: '12px', color: '#64748b' }}>추가</div>
+            </div>
+            <div style={{ textAlign: 'center' }}>
+              <div style={{ fontSize: '24px', fontWeight: '700', color: '#ef4444' }}>
+                {sessionStatus.session_info.removed_count || 0}
+              </div>
+              <div style={{ fontSize: '12px', color: '#64748b' }}>제거</div>
+            </div>
+            <div style={{ textAlign: 'center' }}>
+              <div style={{ fontSize: '24px', fontWeight: '700', color: '#f59e0b' }}>
+                {sessionStatus.session_info.changed_count || 0}
+              </div>
+              <div style={{ fontSize: '12px', color: '#64748b' }}>변경</div>
+            </div>
+            <div style={{ textAlign: 'center' }}>
+              <div style={{ fontSize: '24px', fontWeight: '700', color: '#6b7280' }}>
+                {sessionStatus.session_info.unchanged_count || 0}
+              </div>
+              <div style={{ fontSize: '12px', color: '#64748b' }}>유지</div>
+            </div>
+          </div>
+
+          {/* 진행률 바 */}
+          <div style={{
+            background: '#f1f5f9',
+            borderRadius: '8px',
+            height: '8px',
+            overflow: 'hidden'
+          }}>
+            <div
+              style={{
+                background: 'linear-gradient(90deg, #10b981 0%, #3b82f6 100%)',
+                height: '100%',
+                width: `${sessionStatus.progress_percentage || 0}%`,
+                transition: 'width 0.3s ease'
+              }}
+            />
+          </div>
+          <div style={{
+            textAlign: 'center',
+            fontSize: '12px',
+            color: '#64748b',
+            marginTop: '4px'
+          }}>
+            진행률: {Math.round(sessionStatus.progress_percentage || 0)}%
+          </div>
+        </div>
+      )}
+
+      {/* 카테고리 탭 */}
+      <div style={{ padding: '20px 24px' }}>
+        <div style={{
+          display: 'grid',
+          gridTemplateColumns: 'repeat(auto-fit, minmax(100px, 1fr))',
+          gap: '8px',
+          marginBottom: '20px'
+        }}>
+          {categories.map(category => {
+            const hasChanges = revisionSummary?.category_summaries?.[category.key];
+            const isActive = selectedCategory === category.key;
+            
+            return (
+              <button
+                key={category.key}
+                onClick={() => {
+                  setSelectedCategory(category.key);
+                  if (!categoryChanges[category.key]) {
+                    handleCategoryCompare(category.key);
+                  }
+                }}
+                style={{
+                  background: isActive 
+                    ? 'linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%)'
+                    : hasChanges 
+                      ? 'linear-gradient(135deg, #fef3c7 0%, #fde68a 100%)'
+                      : 'white',
+                  color: isActive ? 'white' : hasChanges ? '#92400e' : '#64748b',
+                  border: isActive ? 'none' : '1px solid #e2e8f0',
+                  borderRadius: '8px',
+                  padding: '8px 12px',
+                  fontSize: '12px',
+                  fontWeight: '500',
+                  cursor: 'pointer',
+                  transition: 'all 0.2s ease',
+                  position: 'relative'
+                }}
+              >
+                {category.name}
+                {hasChanges && (
+                  <span style={{
+                    position: 'absolute',
+                    top: '-4px',
+                    right: '-4px',
+                    background: '#ef4444',
+                    color: 'white',
+                    borderRadius: '50%',
+                    width: '16px',
+                    height: '16px',
+                    fontSize: '10px',
+                    display: 'flex',
+                    alignItems: 'center',
+                    justifyContent: 'center'
+                  }}>
+                    {hasChanges.total_changes}
+                  </span>
+                )}
+              </button>
+            );
+          })}
+        </div>
+
+        {/* 선택된 카테고리의 변경사항 */}
+        {selectedCategory && categoryChanges[selectedCategory] && (
+          <div style={{
+            background: '#f8fafc',
+            borderRadius: '12px',
+            padding: '16px',
+            maxHeight: '400px',
+            overflowY: 'auto'
+          }}>
+            <h4 style={{
+              margin: '0 0 16px 0',
+              fontSize: '16px',
+              fontWeight: '600',
+              color: '#1e293b'
+            }}>
+              {categories.find(c => c.key === selectedCategory)?.name} 변경사항
+            </h4>
+
+            {categoryChanges[selectedCategory].map((change, index) => (
+              <div
+                key={change.id || index}
+                style={{
+                  background: 'white',
+                  borderRadius: '8px',
+                  padding: '12px',
+                  marginBottom: '8px',
+                  border: '1px solid #e2e8f0',
+                  display: 'flex',
+                  justifyContent: 'space-between',
+                  alignItems: 'center'
+                }}
+              >
+                <div style={{ flex: 1 }}>
+                  <div style={{
+                    fontSize: '14px',
+                    fontWeight: '500',
+                    color: '#1e293b',
+                    marginBottom: '4px'
+                  }}>
+                    {change.material_description}
+                  </div>
+                  <div style={{
+                    fontSize: '12px',
+                    color: '#64748b',
+                    display: 'flex',
+                    gap: '12px'
+                  }}>
+                    <span>이전: {change.previous_quantity || 0}</span>
+                    <span>현재: {change.current_quantity || 0}</span>
+                    <span>차이: {change.quantity_difference > 0 ? '+' : ''}{change.quantity_difference}</span>
+                  </div>
+                </div>
+
+                <div style={{ display: 'flex', alignItems: 'center', gap: '8px' }}>
+                  <span
+                    style={{
+                      background: getActionColor(change.revision_action),
+                      color: 'white',
+                      padding: '4px 8px',
+                      borderRadius: '4px',
+                      fontSize: '11px',
+                      fontWeight: '500'
+                    }}
+                  >
+                    {getActionLabel(change.revision_action)}
+                  </span>
+
+                  {change.action_status === 'pending' && (
+                    <button
+                      onClick={() => handleActionProcess(change.id, change.revision_action)}
+                      disabled={processingActions.has(change.id)}
+                      style={{
+                        background: '#3b82f6',
+                        color: 'white',
+                        border: 'none',
+                        borderRadius: '4px',
+                        padding: '4px 8px',
+                        fontSize: '11px',
+                        cursor: processingActions.has(change.id) ? 'not-allowed' : 'pointer',
+                        opacity: processingActions.has(change.id) ? 0.6 : 1
+                      }}
+                    >
+                      {processingActions.has(change.id) ? '처리중...' : '처리'}
+                    </button>
+                  )}
+
+                  {change.action_status === 'completed' && (
+                    <span style={{
+                      color: '#10b981',
+                      fontSize: '11px',
+                      fontWeight: '500'
+                    }}>
+                      ✅ 완료
+                    </span>
+                  )}
+                </div>
+              </div>
+            ))}
+          </div>
+        )}
+      </div>
+    </div>
+  );
+};
+
+export default RevisionManagementPanel;

frontend/src/hooks/useRevisionManagement.js

@@ -0,0 +1,318 @@
+/**
+ * 리비전 관리 훅
+ * - 리비전 세션 생성, 관리, 완료
+ * - 자재 비교 및 변경사항 처리
+ * - 리비전 히스토리 조회
+ */
+
+import { useState, useCallback } from 'react';
+import api from '../api';
+
+export const useRevisionManagement = () => {
+  const [loading, setLoading] = useState(false);
+  const [error, setError] = useState(null);
+  const [currentSession, setCurrentSession] = useState(null);
+  const [sessionStatus, setSessionStatus] = useState(null);
+  const [revisionHistory, setRevisionHistory] = useState([]);
+
+  // 에러 처리 헬퍼
+  const handleError = useCallback((error, defaultMessage) => {
+    console.error(defaultMessage, error);
+    const errorMessage = error.response?.data?.detail || error.message || defaultMessage;
+    setError(errorMessage);
+    return { success: false, error: errorMessage };
+  }, []);
+
+  // 리비전 세션 생성
+  const createRevisionSession = useCallback(async (jobNo, currentFileId, previousFileId) => {
+    setLoading(true);
+    setError(null);
+
+    try {
+      const response = await api.post('/revision-management/sessions', {
+        job_no: jobNo,
+        current_file_id: currentFileId,
+        previous_file_id: previousFileId
+      });
+
+      if (response.data.success) {
+        setCurrentSession(response.data.data);
+        console.log('✅ 리비전 세션 생성 완료:', response.data.data);
+        return { success: true, data: response.data.data };
+      } else {
+        return handleError(new Error(response.data.message), '리비전 세션 생성 실패');
+      }
+    } catch (error) {
+      return handleError(error, '리비전 세션 생성 중 오류 발생');
+    } finally {
+      setLoading(false);
+    }
+  }, [handleError]);
+
+  // 세션 상태 조회
+  const getSessionStatus = useCallback(async (sessionId) => {
+    setLoading(true);
+    setError(null);
+
+    try {
+      const response = await api.get(`/revision-management/sessions/${sessionId}`);
+
+      if (response.data.success) {
+        setSessionStatus(response.data.data);
+        console.log('✅ 세션 상태 조회 완료:', response.data.data);
+        return { success: true, data: response.data.data };
+      } else {
+        return handleError(new Error(response.data.message), '세션 상태 조회 실패');
+      }
+    } catch (error) {
+      return handleError(error, '세션 상태 조회 중 오류 발생');
+    } finally {
+      setLoading(false);
+    }
+  }, [handleError]);
+
+  // 카테고리별 자재 비교
+  const compareCategory = useCallback(async (sessionId, category) => {
+    setLoading(true);
+    setError(null);
+
+    try {
+      const response = await api.post(`/revision-management/sessions/${sessionId}/compare/${category}`);
+
+      if (response.data.success) {
+        console.log(`✅ 카테고리 ${category} 비교 완료:`, response.data.data);
+        return { success: true, data: response.data.data };
+      } else {
+        return handleError(new Error(response.data.message), `카테고리 ${category} 비교 실패`);
+      }
+    } catch (error) {
+      return handleError(error, `카테고리 ${category} 비교 중 오류 발생`);
+    } finally {
+      setLoading(false);
+    }
+  }, [handleError]);
+
+  // 세션 변경사항 조회
+  const getSessionChanges = useCallback(async (sessionId, category = null) => {
+    setLoading(true);
+    setError(null);
+
+    try {
+      const params = category ? { category } : {};
+      const response = await api.get(`/revision-management/sessions/${sessionId}/changes`, { params });
+
+      if (response.data.success) {
+        console.log('✅ 세션 변경사항 조회 완료:', response.data.data);
+        return { success: true, data: response.data.data };
+      } else {
+        return handleError(new Error(response.data.message), '세션 변경사항 조회 실패');
+      }
+    } catch (error) {
+      return handleError(error, '세션 변경사항 조회 중 오류 발생');
+    } finally {
+      setLoading(false);
+    }
+  }, [handleError]);
+
+  // 리비전 액션 처리
+  const processRevisionAction = useCallback(async (changeId, action, notes = null) => {
+    setLoading(true);
+    setError(null);
+
+    try {
+      const response = await api.post(`/revision-management/changes/${changeId}/process`, {
+        action,
+        notes
+      });
+
+      if (response.data.success) {
+        console.log('✅ 리비전 액션 처리 완료:', response.data.data);
+        return { success: true, data: response.data.data };
+      } else {
+        return handleError(new Error(response.data.message), '리비전 액션 처리 실패');
+      }
+    } catch (error) {
+      return handleError(error, '리비전 액션 처리 중 오류 발생');
+    } finally {
+      setLoading(false);
+    }
+  }, [handleError]);
+
+  // 세션 완료
+  const completeSession = useCallback(async (sessionId) => {
+    setLoading(true);
+    setError(null);
+
+    try {
+      const response = await api.post(`/revision-management/sessions/${sessionId}/complete`);
+
+      if (response.data.success) {
+        setCurrentSession(null);
+        setSessionStatus(null);
+        console.log('✅ 리비전 세션 완료:', response.data.data);
+        return { success: true, data: response.data.data };
+      } else {
+        return handleError(new Error(response.data.message), '리비전 세션 완료 실패');
+      }
+    } catch (error) {
+      return handleError(error, '리비전 세션 완료 중 오류 발생');
+    } finally {
+      setLoading(false);
+    }
+  }, [handleError]);
+
+  // 세션 취소
+  const cancelSession = useCallback(async (sessionId, reason = null) => {
+    setLoading(true);
+    setError(null);
+
+    try {
+      const params = reason ? { reason } : {};
+      const response = await api.post(`/revision-management/sessions/${sessionId}/cancel`, null, { params });
+
+      if (response.data.success) {
+        setCurrentSession(null);
+        setSessionStatus(null);
+        console.log('✅ 리비전 세션 취소:', response.data.data);
+        return { success: true, data: response.data.data };
+      } else {
+        return handleError(new Error(response.data.message), '리비전 세션 취소 실패');
+      }
+    } catch (error) {
+      return handleError(error, '리비전 세션 취소 중 오류 발생');
+    } finally {
+      setLoading(false);
+    }
+  }, [handleError]);
+
+  // 리비전 히스토리 조회
+  const getRevisionHistory = useCallback(async (jobNo) => {
+    setLoading(true);
+    setError(null);
+
+    try {
+      const response = await api.get(`/revision-management/history/${jobNo}`);
+
+      if (response.data.success) {
+        setRevisionHistory(response.data.data.history);
+        console.log('✅ 리비전 히스토리 조회 완료:', response.data.data);
+        return { success: true, data: response.data.data };
+      } else {
+        return handleError(new Error(response.data.message), '리비전 히스토리 조회 실패');
+      }
+    } catch (error) {
+      return handleError(error, '리비전 히스토리 조회 중 오류 발생');
+    } finally {
+      setLoading(false);
+    }
+  }, [handleError]);
+
+  // 리비전 요약 조회
+  const getRevisionSummary = useCallback(async (sessionId) => {
+    setLoading(true);
+    setError(null);
+
+    try {
+      const response = await api.get(`/revision-management/sessions/${sessionId}/summary`);
+
+      if (response.data.success) {
+        console.log('✅ 리비전 요약 조회 완료:', response.data.data);
+        return { success: true, data: response.data.data };
+      } else {
+        return handleError(new Error(response.data.message), '리비전 요약 조회 실패');
+      }
+    } catch (error) {
+      return handleError(error, '리비전 요약 조회 중 오류 발생');
+    } finally {
+      setLoading(false);
+    }
+  }, [handleError]);
+
+  // 지원 카테고리 조회
+  const getSupportedCategories = useCallback(async () => {
+    try {
+      const response = await api.get('/revision-management/categories');
+      if (response.data.success) {
+        return { success: true, data: response.data.data.categories };
+      }
+    } catch (error) {
+      console.warn('지원 카테고리 조회 실패:', error);
+    }
+    
+    // 기본 카테고리 반환
+    return {
+      success: true,
+      data: [
+        { key: "PIPE", name: "배관", description: "파이프 및 배관 자재" },
+        { key: "FITTING", name: "피팅", description: "배관 연결 부품" },
+        { key: "FLANGE", name: "플랜지", description: "플랜지 및 연결 부품" },
+        { key: "VALVE", name: "밸브", description: "각종 밸브류" },
+        { key: "GASKET", name: "가스켓", description: "씰링 부품" },
+        { key: "BOLT", name: "볼트", description: "체결 부품" },
+        { key: "SUPPORT", name: "서포트", description: "지지대 및 구조물" },
+        { key: "SPECIAL", name: "특수자재", description: "특수 목적 자재" },
+        { key: "UNCLASSIFIED", name: "미분류", description: "분류되지 않은 자재" }
+      ]
+    };
+  }, []);
+
+  // 리비전 액션 목록 조회
+  const getRevisionActions = useCallback(async () => {
+    try {
+      const response = await api.get('/revision-management/actions');
+      if (response.data.success) {
+        return { success: true, data: response.data.data.actions };
+      }
+    } catch (error) {
+      console.warn('리비전 액션 조회 실패:', error);
+    }
+    
+    // 기본 액션 반환
+    return {
+      success: true,
+      data: [
+        { key: "new_material", name: "신규 자재", description: "새로 추가된 자재" },
+        { key: "additional_purchase", name: "추가 구매", description: "구매된 자재의 수량 증가" },
+        { key: "inventory_transfer", name: "재고 이관", description: "구매된 자재의 수량 감소 또는 제거" },
+        { key: "purchase_cancel", name: "구매 취소", description: "미구매 자재의 제거" },
+        { key: "quantity_update", name: "수량 업데이트", description: "미구매 자재의 수량 변경" },
+        { key: "maintain", name: "유지", description: "변경사항 없음" }
+      ]
+    };
+  }, []);
+
+  // 상태 초기화
+  const resetState = useCallback(() => {
+    setCurrentSession(null);
+    setSessionStatus(null);
+    setRevisionHistory([]);
+    setError(null);
+    setLoading(false);
+  }, []);
+
+  return {
+    // 상태
+    loading,
+    error,
+    currentSession,
+    sessionStatus,
+    revisionHistory,
+
+    // 액션
+    createRevisionSession,
+    getSessionStatus,
+    compareCategory,
+    getSessionChanges,
+    processRevisionAction,
+    completeSession,
+    cancelSession,
+    getRevisionHistory,
+    getRevisionSummary,
+    getSupportedCategories,
+    getRevisionActions,
+    resetState,
+
+    // 유틸리티
+    clearError: () => setError(null)
+  };
+};

frontend/src/pages/BOMManagementPage.css

@@ -0,0 +1,184 @@
+/* BOM Management Page Styles */
+
+@keyframes spin {
+  0% { transform: rotate(0deg); }
+  100% { transform: rotate(360deg); }
+}
+
+.bom-management-page {
+  padding: 40px;
+  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
+  min-height: 100vh;
+}
+
+.bom-header-card {
+  background: rgba(255, 255, 255, 0.95);
+  backdrop-filter: blur(10px);
+  border-radius: 20px;
+  padding: 32px;
+  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
+  border: 1px solid rgba(255, 255, 255, 0.2);
+  margin-bottom: 40px;
+}
+
+.bom-stats-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
+  gap: 20px;
+  margin-bottom: 32px;
+}
+
+.bom-stat-card {
+  padding: 20px;
+  border-radius: 12px;
+  text-align: center;
+  transition: transform 0.2s ease;
+}
+
+.bom-stat-card:hover {
+  transform: translateY(-2px);
+}
+
+.bom-stat-number {
+  font-size: 32px;
+  font-weight: 700;
+  margin-bottom: 4px;
+}
+
+.bom-stat-label {
+  font-size: 14px;
+  font-weight: 500;
+}
+
+.bom-category-tabs {
+  background: rgba(255, 255, 255, 0.95);
+  backdrop-filter: blur(10px);
+  border-radius: 20px;
+  padding: 24px 32px;
+  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
+  border: 1px solid rgba(255, 255, 255, 0.2);
+  margin-bottom: 40px;
+}
+
+.bom-category-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
+  gap: 16px;
+}
+
+.bom-category-button {
+  border-radius: 12px;
+  padding: 16px 12px;
+  cursor: pointer;
+  font-size: 14px;
+  font-weight: 600;
+  transition: all 0.2s ease;
+  text-align: center;
+  border: none;
+  outline: none;
+}
+
+.bom-category-button:hover {
+  transform: translateY(-1px);
+}
+
+.bom-category-icon {
+  font-size: 20px;
+  margin-bottom: 8px;
+}
+
+.bom-category-count {
+  font-size: 12px;
+  opacity: 0.8;
+  font-weight: 500;
+}
+
+.bom-content-card {
+  background: rgba(255, 255, 255, 0.95);
+  backdrop-filter: blur(10px);
+  border-radius: 20px;
+  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
+  border: 1px solid rgba(255, 255, 255, 0.2);
+  overflow: hidden;
+}
+
+.bom-loading {
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  height: 100vh;
+  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
+}
+
+.bom-loading-spinner {
+  width: 60px;
+  height: 60px;
+  border: 4px solid #e2e8f0;
+  border-top: 4px solid #3b82f6;
+  border-radius: 50%;
+  animation: spin 1s linear infinite;
+  margin: 0 auto 20px;
+}
+
+.bom-loading-text {
+  font-size: 18px;
+  color: #64748b;
+  font-weight: 600;
+}
+
+.bom-error {
+  padding: 60px;
+  text-align: center;
+  color: #dc2626;
+}
+
+.bom-error-icon {
+  font-size: 48px;
+  margin-bottom: 16px;
+}
+
+.bom-error-title {
+  font-size: 18px;
+  font-weight: 600;
+  margin-bottom: 8px;
+}
+
+.bom-error-message {
+  font-size: 14px;
+}
+
+/* 반응형 디자인 */
+@media (max-width: 768px) {
+  .bom-management-page {
+    padding: 20px;
+  }
+  
+  .bom-header-card {
+    padding: 24px;
+  }
+  
+  .bom-stats-grid {
+    grid-template-columns: repeat(2, 1fr);
+    gap: 16px;
+  }
+  
+  .bom-category-grid {
+    grid-template-columns: repeat(2, 1fr);
+    gap: 12px;
+  }
+  
+  .bom-category-button {
+    padding: 12px 8px;
+    font-size: 12px;
+  }
+}
+
+@media (max-width: 480px) {
+  .bom-stats-grid {
+    grid-template-columns: 1fr;
+  }
+  
+  .bom-category-grid {
+    grid-template-columns: 1fr;
+  }
+}

frontend/src/pages/BOMManagementPage.jsx

@@ -0,0 +1,613 @@
+import React, { useState, useEffect } from 'react';
+import { fetchMaterials } from '../api';
+import api from '../api';
+import {
+  PipeMaterialsView,
+  FittingMaterialsView,
+  FlangeMaterialsView,
+  ValveMaterialsView,
+  GasketMaterialsView,
+  BoltMaterialsView,
+  SupportMaterialsView,
+  SpecialMaterialsView,
+  UnclassifiedMaterialsView
+} from '../components/bom';
+import RevisionManagementPanel from '../components/revision/RevisionManagementPanel';
+import './BOMManagementPage.css';
+
+const BOMManagementPage = ({ 
+  onNavigate, 
+  selectedProject,
+  fileId,
+  jobNo,
+  bomName,
+  revision,
+  filename,
+  user
+}) => {
+  const [materials, setMaterials] = useState([]);
+  const [loading, setLoading] = useState(true);
+  const [selectedCategory, setSelectedCategory] = useState('PIPE');
+  const [selectedMaterials, setSelectedMaterials] = useState(new Set());
+  const [exportHistory, setExportHistory] = useState([]);
+  const [availableRevisions, setAvailableRevisions] = useState([]);
+  const [currentRevision, setCurrentRevision] = useState(revision || 'Rev.0');
+  const [userRequirements, setUserRequirements] = useState({});
+  const [purchasedMaterials, setPurchasedMaterials] = useState(new Set());
+  const [error, setError] = useState(null);
+
+  // 리비전 관련 상태
+  const [isRevisionMode, setIsRevisionMode] = useState(false);
+  const [previousFileId, setPreviousFileId] = useState(null);
+  const [showRevisionPanel, setShowRevisionPanel] = useState(false);
+
+  // 자재 업데이트 함수 (브랜드, 사용자 요구사항 등)
+  const updateMaterial = (materialId, updates) => {
+    setMaterials(prevMaterials => 
+      prevMaterials.map(material => 
+        material.id === materialId 
+          ? { ...material, ...updates }
+          : material
+      )
+    );
+  };
+
+  // 카테고리 정의
+  const categories = [
+    { key: 'PIPE', label: 'Pipes', color: '#3b82f6' },
+    { key: 'FITTING', label: 'Fittings', color: '#10b981' },
+    { key: 'FLANGE', label: 'Flanges', color: '#f59e0b' },
+    { key: 'VALVE', label: 'Valves', color: '#ef4444' },
+    { key: 'GASKET', label: 'Gaskets', color: '#8b5cf6' },
+    { key: 'BOLT', label: 'Bolts', color: '#6b7280' },
+    { key: 'SUPPORT', label: 'Supports', color: '#f97316' },
+    { key: 'SPECIAL', label: 'Special Items', color: '#ec4899' },
+    { key: 'UNCLASSIFIED', label: 'Unclassified', color: '#64748b' }
+  ];
+
+  // 자료 로드 함수들
+  const loadMaterials = async (id) => {
+    try {
+      setLoading(true);
+      console.log('🔍 자재 데이터 로딩 중...', { 
+        file_id: id, 
+        selectedProject: selectedProject?.job_no || selectedProject?.official_project_code,
+        jobNo 
+      });
+      
+      // 구매신청된 자재 먼저 확인
+      const projectJobNo = selectedProject?.job_no || selectedProject?.official_project_code || jobNo;
+      await loadPurchasedMaterials(projectJobNo);
+      
+      const response = await fetchMaterials({ 
+        file_id: parseInt(id), 
+        limit: 10000,
+        exclude_requested: false,
+        job_no: projectJobNo
+      });
+      
+      if (response.data?.materials) {
+        const materialsData = response.data.materials;
+        console.log(`✅ ${materialsData.length}개 원본 자재 로드 완료`);
+        setMaterials(materialsData);
+        setError(null);
+      } else {
+        console.warn('⚠️ 자재 데이터가 없습니다:', response.data);
+        setMaterials([]);
+      }
+    } catch (error) {
+      console.error('자재 로드 실패:', error);
+      setError('자재 로드에 실패했습니다.');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const loadAvailableRevisions = async () => {
+    try {
+      const response = await api.get('/files/', {
+        params: { job_no: jobNo }
+      });
+      
+      const allFiles = Array.isArray(response.data) ? response.data : response.data?.files || [];
+      const sameBomFiles = allFiles.filter(file => 
+        (file.bom_name || file.original_filename) === bomName
+      );
+      
+      sameBomFiles.sort((a, b) => {
+        const revA = parseInt(a.revision?.replace('Rev.', '') || '0');
+        const revB = parseInt(b.revision?.replace('Rev.', '') || '0');
+        return revB - revA;
+      });
+      
+      setAvailableRevisions(sameBomFiles);
+    } catch (error) {
+      console.error('리비전 목록 조회 실패:', error);
+    }
+  };
+
+  const loadPurchasedMaterials = async (jobNo) => {
+    try {
+      // 새로운 API로 구매신청된 자재 ID 목록 조회
+      const response = await api.get('/purchase-request/requested-materials', {
+        params: { 
+          job_no: jobNo,
+          file_id: fileId
+        }
+      });
+      
+      if (response.data?.requested_material_ids) {
+        const purchasedIds = new Set(response.data.requested_material_ids);
+        setPurchasedMaterials(purchasedIds);
+        console.log(`✅ ${purchasedIds.size}개 구매신청된 자재 ID 로드 완료`);
+      }
+    } catch (error) {
+      console.error('구매신청 자재 조회 실패:', error);
+    }
+  };
+
+  const loadUserRequirements = async (fileId) => {
+    try {
+      const response = await api.get(`/files/${fileId}/user-requirements`);
+      if (response.data?.requirements) {
+        const reqMap = {};
+        response.data.requirements.forEach(req => {
+          reqMap[req.material_id] = req.requirement;
+        });
+        setUserRequirements(reqMap);
+      }
+    } catch (error) {
+      console.error('사용자 요구사항 로드 실패:', error);
+    }
+  };
+
+  // 초기 로드
+  useEffect(() => {
+    if (fileId) {
+      loadMaterials(fileId);
+      loadAvailableRevisions();
+      loadUserRequirements(fileId);
+      checkRevisionMode(); // 리비전 모드 확인
+    }
+  }, [fileId]);
+
+  // 리비전 모드 확인
+  const checkRevisionMode = async () => {
+    try {
+      // 현재 job_no의 모든 파일 목록 확인
+      const response = await api.get(`/files/list?job_no=${jobNo}`);
+      const files = response.data.files || [];
+      
+      if (files.length > 1) {
+        // 파일들을 업로드 날짜순으로 정렬
+        const sortedFiles = files.sort((a, b) => new Date(a.upload_date) - new Date(b.upload_date));
+        
+        // 현재 파일의 인덱스 찾기
+        const currentIndex = sortedFiles.findIndex(file => file.id === parseInt(fileId));
+        
+        if (currentIndex > 0) {
+          // 이전 파일이 있으면 리비전 모드 활성화
+          const previousFile = sortedFiles[currentIndex - 1];
+          setIsRevisionMode(true);
+          setPreviousFileId(previousFile.id);
+          
+          console.log('✅ 리비전 모드 활성화:', {
+            currentFileId: fileId,
+            previousFileId: previousFile.id,
+            currentRevision: revision,
+            previousRevision: previousFile.revision
+          });
+        }
+      }
+    } catch (error) {
+      console.error('리비전 모드 확인 실패:', error);
+    }
+  };
+
+  // 리비전 관리 핸들러
+  const handleRevisionComplete = (revisionData) => {
+    console.log('✅ 리비전 완료:', revisionData);
+    setShowRevisionPanel(false);
+    setIsRevisionMode(false);
+    
+    // 자재 목록 새로고침
+    loadMaterials(fileId);
+    
+    // 성공 메시지 표시
+    alert('리비전 처리가 완료되었습니다!');
+  };
+
+  const handleRevisionCancel = (cancelData) => {
+    console.log('❌ 리비전 취소:', cancelData);
+    setShowRevisionPanel(false);
+    
+    // 취소 메시지 표시
+    alert('리비전 처리가 취소되었습니다.');
+  };
+
+  // 자재 로드 후 선택된 카테고리가 유효한지 확인
+  useEffect(() => {
+    if (materials.length > 0) {
+      const availableCategories = categories.filter(category => {
+        const count = getCategoryMaterials(category.key).length;
+        return count > 0;
+      });
+      
+      // 현재 선택된 카테고리에 자재가 없으면 첫 번째 유효한 카테고리로 전환
+      const currentCategoryHasMaterials = getCategoryMaterials(selectedCategory).length > 0;
+      if (!currentCategoryHasMaterials && availableCategories.length > 0) {
+        setSelectedCategory(availableCategories[0].key);
+      }
+    }
+  }, [materials, selectedCategory]);
+
+  // 카테고리별 자재 필터링
+  const getCategoryMaterials = (category) => {
+    return materials.filter(material => 
+      material.classified_category === category || 
+      material.category === category
+    );
+  };
+
+  // 카테고리별 컴포넌트 렌더링
+  const renderCategoryView = () => {
+    const categoryMaterials = getCategoryMaterials(selectedCategory);
+    const commonProps = {
+      materials: categoryMaterials,
+      selectedMaterials,
+      setSelectedMaterials,
+      userRequirements,
+      setUserRequirements,
+      purchasedMaterials,
+      onPurchasedMaterialsUpdate: (materialIds) => {
+        setPurchasedMaterials(prev => {
+          const newSet = new Set(prev);
+          materialIds.forEach(id => newSet.add(id));
+          console.log(`📦 구매신청 자재 추가: 기존 ${prev.size}개 → 신규 ${newSet.size}개`);
+          return newSet;
+        });
+      },
+      updateMaterial, // 자재 업데이트 함수 추가
+      fileId,
+      jobNo,
+      user,
+      onNavigate
+    };
+
+    switch (selectedCategory) {
+      case 'PIPE':
+        return <PipeMaterialsView {...commonProps} />;
+      case 'FITTING':
+        return <FittingMaterialsView {...commonProps} />;
+      case 'FLANGE':
+        return <FlangeMaterialsView {...commonProps} />;
+      case 'VALVE':
+        return <ValveMaterialsView {...commonProps} />;
+      case 'GASKET':
+        return <GasketMaterialsView {...commonProps} />;
+      case 'BOLT':
+        return <BoltMaterialsView {...commonProps} />;
+      case 'SUPPORT':
+        return <SupportMaterialsView {...commonProps} />;
+      case 'SPECIAL':
+        return <SpecialMaterialsView {...commonProps} />;
+      case 'UNCLASSIFIED':
+        return <UnclassifiedMaterialsView {...commonProps} />;
+      default:
+        return <div>카테고리를 선택해주세요.</div>;
+    }
+  };
+
+  if (loading) {
+    return (
+      <div style={{
+        display: 'flex',
+        justifyContent: 'center',
+        alignItems: 'center',
+        height: '100vh',
+        background: 'linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%)'
+      }}>
+        <div style={{ textAlign: 'center' }}>
+          <div style={{
+            width: '60px',
+            height: '60px',
+            border: '4px solid #e2e8f0',
+            borderTop: '4px solid #3b82f6',
+            borderRadius: '50%',
+            animation: 'spin 1s linear infinite',
+            margin: '0 auto 20px'
+          }}></div>
+          <div style={{ fontSize: '18px', color: '#64748b', fontWeight: '600' }}>
+            Loading Materials...
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <div style={{ 
+      padding: '40px', 
+      background: 'linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%)', 
+      minHeight: '100vh' 
+    }}>
+      {/* 헤더 섹션 */}
+      <div style={{
+        background: 'rgba(255, 255, 255, 0.95)',
+        backdropFilter: 'blur(10px)',
+        borderRadius: '20px',
+        padding: '32px',
+        boxShadow: '0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04)',
+        border: '1px solid rgba(255, 255, 255, 0.2)',
+        marginBottom: '40px'
+      }}>
+        <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: '28px' }}>
+          <div>
+            <div style={{ display: 'flex', alignItems: 'center', gap: '12px', marginBottom: '8px' }}>
+              <h2 style={{ 
+                fontSize: '28px', 
+                fontWeight: '700', 
+                color: '#0f172a', 
+                margin: 0,
+                letterSpacing: '-0.025em'
+              }}>
+                BOM Materials Management
+              </h2>
+              {isRevisionMode && (
+                <div style={{
+                  background: 'linear-gradient(135deg, #f59e0b 0%, #d97706 100%)',
+                  color: 'white',
+                  padding: '6px 12px',
+                  borderRadius: '8px',
+                  fontSize: '12px',
+                  fontWeight: '600',
+                  textTransform: 'uppercase',
+                  letterSpacing: '0.05em',
+                  boxShadow: '0 4px 6px -1px rgba(245, 158, 11, 0.3)'
+                }}>
+                  📊 Revision Mode
+                </div>
+              )}
+            </div>
+            <p style={{ 
+              fontSize: '16px', 
+              color: '#64748b', 
+              margin: 0,
+              fontWeight: '400'
+            }}>
+              {bomName} - {currentRevision} | Project: {selectedProject?.job_name || jobNo}
+            </p>
+          </div>
+          <div style={{ display: 'flex', gap: '12px', alignItems: 'center' }}>
+            {isRevisionMode && (
+              <button
+                onClick={() => setShowRevisionPanel(!showRevisionPanel)}
+                style={{
+                  background: showRevisionPanel 
+                    ? 'linear-gradient(135deg, #667eea 0%, #764ba2 100%)'
+                    : 'linear-gradient(135deg, #f59e0b 0%, #d97706 100%)',
+                  color: 'white',
+                  border: 'none',
+                  borderRadius: '12px',
+                  padding: '12px 20px',
+                  cursor: 'pointer',
+                  fontSize: '14px',
+                  fontWeight: '600',
+                  transition: 'all 0.2s ease',
+                  letterSpacing: '0.025em',
+                  boxShadow: '0 4px 6px -1px rgba(0, 0, 0, 0.1)'
+                }}
+              >
+                {showRevisionPanel ? '📊 Hide Revision Panel' : '🔄 Manage Revision'}
+              </button>
+            )}
+            <button
+              onClick={() => onNavigate('dashboard')}
+              style={{
+                background: 'white',
+                color: '#6b7280',
+                border: '1px solid #d1d5db',
+                borderRadius: '12px',
+                padding: '12px 20px',
+                cursor: 'pointer',
+                fontSize: '14px',
+                fontWeight: '600',
+                transition: 'all 0.2s ease',
+                letterSpacing: '0.025em'
+              }}
+              onMouseEnter={(e) => {
+                e.target.style.background = '#f9fafb';
+                e.target.style.borderColor = '#9ca3af';
+              }}
+              onMouseLeave={(e) => {
+                e.target.style.background = 'white';
+                e.target.style.borderColor = '#d1d5db';
+              }}
+            >
+              Back to Dashboard
+            </button>
+          </div>
+        </div>
+
+        {/* 통계 정보 */}
+        <div style={{
+          display: 'grid',
+          gridTemplateColumns: 'repeat(auto-fit, minmax(200px, 1fr))',
+          gap: '20px',
+          marginBottom: '32px'
+        }}>
+          <div style={{
+            background: 'linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%)',
+            padding: '20px',
+            borderRadius: '12px',
+            textAlign: 'center'
+          }}>
+            <div style={{ fontSize: '32px', fontWeight: '700', color: '#1d4ed8', marginBottom: '4px' }}>
+              {materials.length}
+            </div>
+            <div style={{ fontSize: '14px', color: '#1d4ed8', fontWeight: '500' }}>
+              Total Materials
+            </div>
+          </div>
+          
+          <div style={{
+            background: 'linear-gradient(135deg, #dcfce7 0%, #bbf7d0 100%)',
+            padding: '20px',
+            borderRadius: '12px',
+            textAlign: 'center'
+          }}>
+            <div style={{ fontSize: '32px', fontWeight: '700', color: '#059669', marginBottom: '4px' }}>
+              {getCategoryMaterials(selectedCategory).length}
+            </div>
+            <div style={{ fontSize: '14px', color: '#059669', fontWeight: '500' }}>
+              {selectedCategory} Items
+            </div>
+          </div>
+          
+          <div style={{
+            background: 'linear-gradient(135deg, #fef3c7 0%, #fde68a 100%)',
+            padding: '20px',
+            borderRadius: '12px',
+            textAlign: 'center'
+          }}>
+            <div style={{ fontSize: '32px', fontWeight: '700', color: '#92400e', marginBottom: '4px' }}>
+              {selectedMaterials.size}
+            </div>
+            <div style={{ fontSize: '14px', color: '#92400e', fontWeight: '500' }}>
+              Selected
+            </div>
+          </div>
+          
+          <div style={{
+            background: 'linear-gradient(135deg, #fee2e2 0%, #fecaca 100%)',
+            padding: '20px',
+            borderRadius: '12px',
+            textAlign: 'center'
+          }}>
+            <div style={{ fontSize: '32px', fontWeight: '700', color: '#dc2626', marginBottom: '4px' }}>
+              {purchasedMaterials.size}
+            </div>
+            <div style={{ fontSize: '14px', color: '#dc2626', fontWeight: '500' }}>
+              Purchased
+            </div>
+          </div>
+        </div>
+      </div>
+
+      {/* 카테고리 탭 */}
+      <div style={{
+        background: 'rgba(255, 255, 255, 0.95)',
+        backdropFilter: 'blur(10px)',
+        borderRadius: '20px',
+        padding: '24px 32px',
+        boxShadow: '0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04)',
+        border: '1px solid rgba(255, 255, 255, 0.2)',
+        marginBottom: '40px'
+      }}>
+        <div style={{
+          display: 'grid',
+          gridTemplateColumns: 'repeat(auto-fit, minmax(140px, 1fr))',
+          gap: '16px'
+        }}>
+          {categories
+            .filter((category) => {
+              const count = getCategoryMaterials(category.key).length;
+              return count > 0; // 0개인 카테고리는 숨김
+            })
+            .map((category) => {
+            const isActive = selectedCategory === category.key;
+            const count = getCategoryMaterials(category.key).length;
+            
+            return (
+              <button
+                key={category.key}
+                onClick={() => setSelectedCategory(category.key)}
+                style={{
+                  background: isActive 
+                    ? `linear-gradient(135deg, ${category.color} 0%, ${category.color}dd 100%)`
+                    : 'white',
+                  color: isActive ? 'white' : '#64748b',
+                  border: isActive ? 'none' : '1px solid #e2e8f0',
+                  borderRadius: '12px',
+                  padding: '16px 12px',
+                  cursor: 'pointer',
+                  fontSize: '14px',
+                  fontWeight: '600',
+                  transition: 'all 0.2s ease',
+                  textAlign: 'center',
+                  boxShadow: isActive ? `0 4px 14px 0 ${category.color}39` : '0 2px 8px rgba(0,0,0,0.05)'
+                }}
+                onMouseEnter={(e) => {
+                  if (!isActive) {
+                    e.target.style.background = '#f8fafc';
+                    e.target.style.borderColor = '#cbd5e1';
+                  }
+                }}
+                onMouseLeave={(e) => {
+                  if (!isActive) {
+                    e.target.style.background = 'white';
+                    e.target.style.borderColor = '#e2e8f0';
+                  }
+                }}
+              >
+                <div style={{ marginBottom: '4px' }}>
+                  {category.label}
+                </div>
+                <div style={{ 
+                  fontSize: '12px', 
+                  opacity: 0.8,
+                  fontWeight: '500'
+                }}>
+                  {count} items
+                </div>
+              </button>
+            );
+          })}
+        </div>
+      </div>
+
+      {/* 카테고리별 컨텐츠 */}
+      <div style={{
+        background: 'rgba(255, 255, 255, 0.95)',
+        backdropFilter: 'blur(10px)',
+        borderRadius: '20px',
+        boxShadow: '0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04)',
+        border: '1px solid rgba(255, 255, 255, 0.2)',
+        overflow: 'hidden'
+      }}>
+        {error ? (
+          <div style={{
+            padding: '60px',
+            textAlign: 'center',
+            color: '#dc2626'
+          }}>
+            <div style={{ fontSize: '48px', marginBottom: '16px' }}>⚠️</div>
+            <div style={{ fontSize: '18px', fontWeight: '600', marginBottom: '8px' }}>
+              Error Loading Materials
+            </div>
+            <div style={{ fontSize: '14px' }}>
+              {error}
+            </div>
+          </div>
+        ) : (
+          renderCategoryView()
+        )}
+      </div>
+
+      {/* 리비전 관리 패널 */}
+      {isRevisionMode && showRevisionPanel && (
+        <div style={{ marginTop: '40px' }}>
+          <RevisionManagementPanel
+            jobNo={jobNo}
+            currentFileId={parseInt(fileId)}
+            previousFileId={previousFileId}
+            onRevisionComplete={handleRevisionComplete}
+            onRevisionCancel={handleRevisionCancel}
+          />
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default BOMManagementPage;