feat(purchase): 카테고리 테이블 분리 + 동적 로드 + tkuser 관리

- DB: consumable_categories 테이블 생성, ENUM→VARCHAR 변환, 시드 4개
- API: GET/POST/PUT/DEACTIVATE /api/consumable-categories
- 프론트: 3개 JS 하드코딩 CAT_LABELS 제거 → API loadCategories() 동적 로드
- tkuser: 카테고리 관리 섹션 추가, select 옵션 동적 생성
- 별칭 시드 SQL (INSERT IGNORE 기반)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

system1-factory/api/models/consumableCategoryModel.js

@@ -0,0 +1,47 @@
+// models/consumableCategoryModel.js
+const { getDb } = require('../dbPool');
+
+const ConsumableCategoryModel = {
+  async getAll(activeOnly = true) {
+    const db = await getDb();
+    let sql = 'SELECT * FROM consumable_categories';
+    if (activeOnly) sql += ' WHERE is_active = 1';
+    sql += ' ORDER BY sort_order, category_name';
+    const [rows] = await db.query(sql);
+    return rows;
+  },
+
+  async getById(id) {
+    const db = await getDb();
+    const [rows] = await db.query('SELECT * FROM consumable_categories WHERE category_id = ?', [id]);
+    return rows[0] || null;
+  },
+
+  async create({ categoryCode, categoryName, icon, colorBg, colorFg, sortOrder }) {
+    const db = await getDb();
+    const [result] = await db.query(
+      `INSERT INTO consumable_categories (category_code, category_name, icon, color_bg, color_fg, sort_order)
+       VALUES (?, ?, ?, ?, ?, ?)`,
+      [categoryCode, categoryName, icon || 'fa-box', colorBg || '#dbeafe', colorFg || '#1e40af', sortOrder || 0]
+    );
+    return this.getById(result.insertId);
+  },
+
+  async update(id, { categoryName, icon, colorBg, colorFg, sortOrder }) {
+    const db = await getDb();
+    await db.query(
+      `UPDATE consumable_categories SET category_name = ?, icon = ?, color_bg = ?, color_fg = ?, sort_order = ?
+       WHERE category_id = ?`,
+      [categoryName, icon, colorBg, colorFg, sortOrder, id]
+    );
+    return this.getById(id);
+  },
+
+  async deactivate(id) {
+    const db = await getDb();
+    await db.query('UPDATE consumable_categories SET is_active = 0 WHERE category_id = ?', [id]);
+    return this.getById(id);
+  }
+};
+
+module.exports = ConsumableCategoryModel;