feat: 3-System 분리 프로젝트 초기 코드 작성

TK-FB(공장관리+신고)와 M-Project(부적합관리)를 3개 독립 시스템으로
분리하기 위한 전체 코드 구조 작성.
- SSO 인증 서비스 (bcrypt + pbkdf2 이중 해시 지원)
- System 1: 공장관리 (TK-FB 기반, 신고 코드 제거)
- System 2: 신고 (TK-FB에서 workIssue 코드 추출)
- System 3: 부적합관리 (M-Project 기반)
- Gateway 포털 (path-based 라우팅)
- 통합 docker-compose.yml 및 배포 스크립트

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

gateway/nginx.conf

@@ -0,0 +1,96 @@
+server {
+    listen 80;
+    server_name _;
+
+    client_max_body_size 50M;
+
+    # ===== 포털/SSO 페이지 =====
+    root /usr/share/nginx/html;
+
+    location = / {
+        try_files /portal.html =404;
+    }
+
+    location = /login {
+        try_files /login.html =404;
+    }
+
+    # 공유 JS/CSS
+    location /shared/ {
+        alias /usr/share/nginx/html/shared/;
+    }
+
+    # ===== SSO Auth API =====
+    location /auth/ {
+        proxy_pass http://sso-auth:3000/api/auth/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    # ===== System 1: 공장관리 =====
+    location /factory/ {
+        proxy_pass http://system1-web:80/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    location /factory/api/ {
+        proxy_pass http://system1-api:3005/api/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    location /factory/fastapi/ {
+        proxy_pass http://system1-fastapi:8000/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    # ===== System 2: 신고 =====
+    location /report/ {
+        proxy_pass http://system2-web:80/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    location /report/api/ {
+        proxy_pass http://system2-api:3005/api/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    # ===== System 3: 부적합관리 =====
+    location /nc/ {
+        proxy_pass http://system3-web:80/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    location /nc/api/ {
+        proxy_pass http://system3-api:8000/api/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    # ===== Health Check =====
+    location /health {
+        return 200 '{"status":"ok","service":"gateway"}';
+        add_header Content-Type application/json;
+    }
+}