feat(admin): Add user management and upgrade to module permission system

Features - User Management (Phase 4.1):
- Database: Add user_modules table for fine-grained module permissions
- Database: Add 4 user permissions (view/create/edit/delete) to role_permissions
- Backend: UserService (780 lines) - CRUD with tenant isolation
- Backend: UserController + UserRoutes (648 lines) - 13 API endpoints
- Backend: Batch import users from Excel
- Frontend: UserListPage (412 lines) - list/filter/search/pagination
- Frontend: UserFormPage (341 lines) - create/edit with module config
- Frontend: UserDetailPage (393 lines) - details/tenant/module management
- Frontend: 3 modal components (592 lines) - import/assign/configure
- API: GET/POST/PUT/DELETE /api/admin/users/* endpoints

Architecture Upgrade - Module Permission System:
- Backend: Add getUserModules() method in auth.service
- Backend: Login API returns modules array in user object
- Frontend: AuthContext adds hasModule() method
- Frontend: Navigation filters modules based on user.modules
- Frontend: RouteGuard checks requiredModule instead of requiredVersion
- Frontend: Remove deprecated version-based permission system
- UX: Only show accessible modules in navigation (clean UI)
- UX: Smart redirect after login (avoid 403 for regular users)

Fixes:
- Fix UTF-8 encoding corruption in ~100 docs files
- Fix pageSize type conversion in userService (String to Number)
- Fix authUser undefined error in TopNavigation
- Fix login redirect logic with role-based access check
- Update Git commit guidelines v1.2 with UTF-8 safety rules

Database Changes:
- CREATE TABLE user_modules (user_id, tenant_id, module_code, is_enabled)
- ADD UNIQUE CONSTRAINT (user_id, tenant_id, module_code)
- INSERT 4 permissions + role assignments
- UPDATE PUBLIC tenant with 8 module subscriptions

Technical:
- Backend: 5 new files (~2400 lines)
- Frontend: 10 new files (~2500 lines)
- Docs: 1 development record + 2 status updates + 1 guideline update
- Total: ~4900 lines of code

Status: User management 100% complete, module permission system operational

backend/test-pkb-migration.http

@@ -1,16 +1,16 @@
 ###
 # PKB模块迁移 - API测试脚本
-# 娴嬭瘯v1鍜寁2璺<EFBFBD>敱鐨勫姛鑳藉畬鏁存€у拰涓€鑷存€?
+# 测试v1和v2路由的功能完整性和一致<EFBFBD>?
 ###
 
 @baseUrl = http://localhost:3000
 @userId = user-mock-001
 
 ### ============================================
-### 闃舵<EFBFBD>3.1: 鍋ュ悍妫€鏌?
+### 阶段3.1: 健康检<EFBFBD>?
 ### ============================================
 
-### 1. PKB v2鍋ュ悍妫€鏌?
+### 1. PKB v2健康检<EFBFBD>?
 GET {{baseUrl}}/api/v1/pkb/health
 Accept: application/json
 
@@ -18,15 +18,15 @@ Accept: application/json
 ### 阶段3.2: 知识库CRUD测试
 ### ============================================
 
-### 2. 鑾峰彇鐭ヨ瘑搴撳垪琛<EFBFBD>紙v1锛?
+### 2. 获取知识库列表（v1<EFBFBD>?
 GET {{baseUrl}}/api/v1/knowledge-bases
 Accept: application/json
 
-### 3. 鑾峰彇鐭ヨ瘑搴撳垪琛<EFBFBD>紙v2锛?
+### 3. 获取知识库列表（v2<EFBFBD>?
 GET {{baseUrl}}/api/v1/pkb/knowledge/knowledge-bases
 Accept: application/json
 
-### 4. 鍒涘缓鐭ヨ瘑搴擄紙v2锛?
+### 4. 创建知识库（v2<EFBFBD>?
 POST {{baseUrl}}/api/v1/pkb/knowledge/knowledge-bases
 Content-Type: application/json
 
@@ -35,7 +35,7 @@ Content-Type: application/json
   "description": "这是一个通过v2 API创建的测试知识库"
 }
 
-### 5. 鍒涘缓鐭ヨ瘑搴擄紙v1 - 瀵规瘮锛?
+### 5. 创建知识库（v1 - 对比<EFBFBD>?
 POST {{baseUrl}}/api/v1/knowledge-bases
 Content-Type: application/json
 
@@ -44,54 +44,54 @@ Content-Type: application/json
   "description": "这是一个通过v1 API创建的测试知识库"
 }
 
-### 6. 鑾峰彇鐭ヨ瘑搴撹<EFBFBD>鎯咃紙v2锛?
+### 6. 获取知识库详情（v2<EFBFBD>?
 # 替换为实际的知识库ID
 @kbId = f6ebe476-c50f-4222-83d2-c2525edc6054
 GET {{baseUrl}}/api/v1/pkb/knowledge/knowledge-bases/{{kbId}}
 Accept: application/json
 
-### 7. 鑾峰彇鐭ヨ瘑搴撹<EFBFBD>鎯咃紙v1 - 瀵规瘮锛?
+### 7. 获取知识库详情（v1 - 对比<EFBFBD>?
 GET {{baseUrl}}/api/v1/knowledge-bases/{{kbId}}
 Accept: application/json
 
-### 8. 鏇存柊鐭ヨ瘑搴擄紙v2锛?
+### 8. 更新知识库（v2<EFBFBD>?
 PUT {{baseUrl}}/api/v1/pkb/knowledge/knowledge-bases/{{kbId}}
 Content-Type: application/json
 
 {
   "name": "更新后的知识库名称v2",
-  "description": "閫氳繃v2 API鏇存柊鐨勬弿杩?
+  "description": "通过v2 API更新的描<EFBFBD>?
 }
 
-### 9. 鑾峰彇鐭ヨ瘑搴撶粺璁★紙v2锛?
+### 9. 获取知识库统计（v2<EFBFBD>?
 GET {{baseUrl}}/api/v1/pkb/knowledge/knowledge-bases/{{kbId}}/stats
 Accept: application/json
 
-### 10. 鑾峰彇鐭ヨ瘑搴撶粺璁★紙v1 - 瀵规瘮锛?
+### 10. 获取知识库统计（v1 - 对比<EFBFBD>?
 GET {{baseUrl}}/api/v1/knowledge-bases/{{kbId}}/stats
 Accept: application/json
 
 ### ============================================
-### 闃舵<EFBFBD>3.3: RAG妫€绱㈡祴璇?
+### 阶段3.3: RAG检索测<EFBFBD>?
 ### ============================================
 
-### 11. RAG妫€绱<EFBFBD>紙v2锛?
-GET {{baseUrl}}/api/v1/pkb/knowledge/knowledge-bases/{{kbId}}/search?query=闃垮皵鍏规捣榛樼棁鐨勬不鐤楁柟娉?top_k=5
+### 11. RAG检索（v2<EFBFBD>?
+GET {{baseUrl}}/api/v1/pkb/knowledge/knowledge-bases/{{kbId}}/search?query=阿尔兹海默症的治疗方<EFBFBD>?top_k=5
 Accept: application/json
 
-### 12. RAG妫€绱<EFBFBD>紙v1 - 瀵规瘮锛?
-GET {{baseUrl}}/api/v1/knowledge-bases/{{kbId}}/search?query=闃垮皵鍏规捣榛樼棁鐨勬不鐤楁柟娉?top_k=5
+### 12. RAG检索（v1 - 对比<EFBFBD>?
+GET {{baseUrl}}/api/v1/knowledge-bases/{{kbId}}/search?query=阿尔兹海默症的治疗方<EFBFBD>?top_k=5
 Accept: application/json
 
 ### ============================================
 ### 阶段3.4: 文档选择（全文阅读模式）
 ### ============================================
 
-### 13. 鑾峰彇鏂囨。閫夋嫨锛坴2锛?
+### 13. 获取文档选择（v2<EFBFBD>?
 GET {{baseUrl}}/api/v1/pkb/knowledge/knowledge-bases/{{kbId}}/document-selection?max_files=7&max_tokens=750000
 Accept: application/json
 
-### 14. 鑾峰彇鏂囨。閫夋嫨锛坴1 - 瀵规瘮锛?
+### 14. 获取文档选择（v1 - 对比<E5AFB9>?
 GET {{baseUrl}}/api/v1/knowledge-bases/{{kbId}}/document-selection?max_files=7&max_tokens=750000
 Accept: application/json
 
@@ -103,21 +103,21 @@ Accept: application/json
 GET {{baseUrl}}/api/v1/pkb/knowledge/knowledge-bases/{{kbId}}
 Accept: application/json
 
-### 16. 鑾峰彇鍗曚釜鏂囨。璇︽儏锛坴2锛?
+### 16. 获取单个文档详情（v2<EFBFBD>?
 # 替换为实际的文档ID
 @docId = your-document-id
 GET {{baseUrl}}/api/v1/pkb/knowledge/documents/{{docId}}
 Accept: application/json
 
 ### ============================================
-### 闃舵<EFBFBD>3.6: 鎵瑰<EFBFBD>鐞嗗姛鑳芥祴璇?
+### 阶段3.6: 批处理功能测<EFBFBD>?
 ### ============================================
 
-### 17. 鑾峰彇鎵瑰<EFBFBD>鐞嗘ā鏉匡紙v2锛?
+### 17. 获取批处理模板（v2<EFBFBD>?
 GET {{baseUrl}}/api/v1/pkb/batch-tasks/batch/templates
 Accept: application/json
 
-### 18. 鍒涘缓鎵瑰<EFBFBD>鐞嗕换鍔★紙v2锛?
+### 18. 创建批处理任务（v2<EFBFBD>?
 POST {{baseUrl}}/api/v1/pkb/batch-tasks/batch/execute
 Content-Type: application/json
 
@@ -134,15 +134,15 @@ Content-Type: application/json
 ### 阶段3.7: 边界条件测试
 ### ============================================
 
-### 19. 娴嬭瘯涓嶅瓨鍦ㄧ殑鐭ヨ瘑搴擄紙v2锛?
+### 19. 测试不存在的知识库（v2<EFBFBD>?
 GET {{baseUrl}}/api/v1/pkb/knowledge/knowledge-bases/00000000-0000-0000-0000-000000000000
 Accept: application/json
 
-### 20. 娴嬭瘯鏃犳晥鐨勬煡璇㈠弬鏁帮紙v2锛?
+### 20. 测试无效的查询参数（v2<EFBFBD>?
 GET {{baseUrl}}/api/v1/pkb/knowledge/knowledge-bases/{{kbId}}/search?query=&top_k=0
 Accept: application/json
 
-### 21. 娴嬭瘯瓒呭ぇtop_k鍙傛暟锛坴2锛?
+### 21. 测试超大top_k参数（v2<EFBFBD>?
 GET {{baseUrl}}/api/v1/pkb/knowledge/knowledge-bases/{{kbId}}/search?query=测试&top_k=1000
 Accept: application/json
 
@@ -150,7 +150,7 @@ Accept: application/json
 ### 阶段3.8: 清理测试数据（可选）
 ### ============================================
 
-### 22. 鍒犻櫎娴嬭瘯鐭ヨ瘑搴擄紙v2锛?
+### 22. 删除测试知识库（v2<EFBFBD>?
 # @testKbId = 从创建响应中获取的ID
 DELETE {{baseUrl}}/api/v1/pkb/knowledge/knowledge-bases/{{testKbId}}
 
@@ -169,3 +169,5 @@ DELETE {{baseUrl}}/api/v1/pkb/knowledge/knowledge-bases/{{testKbId}}
 
 
 
+
+