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/src/modules/rvw/__tests__/api.http

@@ -9,7 +9,7 @@
 ### POST /api/v1/rvw/tasks
 ### ========================================
 
-# 注æ„<EFBFBD>：需è¦<EFBFBD>使用工具（如Postman）上传文ä»?
+# 注意：需要使用工具（如Postman）上传文<EFBFBD>?
 # curl -X POST http://localhost:3001/api/v1/rvw/tasks \
 #   -F "file=@test.docx" \
 #   -F "modelType=deepseek-v3"
@@ -24,11 +24,11 @@
 GET {{baseUrl}}/api/v1/rvw/tasks
 Content-Type: application/json
 
-### 获å<EFBFBD>–待处ç<EFBFBD>†ä»»åŠ?
+### 获取待处理任<EFBFBD>?
 GET {{baseUrl}}/api/v1/rvw/tasks?status=pending
 Content-Type: application/json
 
-### 获å<EFBFBD>–已完æˆ<EFBFBD>ä»»åŠ?
+### 获取已完成任<EFBFBD>?
 GET {{baseUrl}}/api/v1/rvw/tasks?status=completed
 Content-Type: application/json
 
@@ -58,7 +58,7 @@ Content-Type: application/json
   "agents": ["methodology"]
 }
 
-### å<EFBFBD>Œæ—¶é€‰æ‹©ä¸¤ä¸ªæ™ºèƒ½ä½“（默认ï¼?
+### 同时选择两个智能体（默认<EFBFBD>?
 POST {{baseUrl}}/api/v1/rvw/tasks/{{taskId}}/run
 Content-Type: application/json
 
@@ -112,15 +112,15 @@ Content-Type: application/json
 ### 旧版API（兼容性测试）
 ### ========================================
 
-### 旧版：获å<EFBFBD>–任务列è¡?
+### 旧版：获取任务列<EFBFBD>?
 GET {{baseUrl}}/api/v1/review/tasks
 Content-Type: application/json
 
-### 旧版：获å<EFBFBD>–任务状æ€?
+### 旧版：获取任务状<EFBFBD>?
 GET {{baseUrl}}/api/v1/review/tasks/{{taskId}}
 Content-Type: application/json
 
-### 旧版：获å<EFBFBD>–报å‘?
+### 旧版：获取报<EFBFBD>?
 GET {{baseUrl}}/api/v1/review/tasks/{{taskId}}/report
 Content-Type: application/json
 
@@ -133,3 +133,5 @@ Content-Type: application/json
 
 
 
+
+