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

docs/01-平台基础层/05-系统配置/README.md

@@ -1,30 +1,30 @@
 # 系统配置
 
-> **模å<EFBFBD>—定ä½<EFBFBD>ï¼?* å¹³å<C2B3>°åŸºç¡€å±? 
+> **模块定位：** 平台基础层  
 > **优先级：** P1  
-> **状æ€<EFBFBD>：** â<>?待设è®?
+> **状态：** ⏳ 待设计
 
 ---
 
 ## 📋 模块概述
 
-系统é…<EFBFBD>ç½®æœ<EFBFBD>务负责ï¼?
-- 系统级é…<EFBFBD>置管ç<EFBFBD>?
+系统配置服务负责：
+- 系统级配置管理
 - 多环境配置（开发、测试、生产）
-- 动æ€<EFBFBD>é…<EFBFBD>置更æ–?
+- 动态配置更新
 
 ---
 
 ## 🎯 核心功能
 
 ### 1. 配置管理
-- é…<EFBFBD>置项定ä¹?
-- é…<EFBFBD>置值管ç<EFBFBD>?
+- 配置项定义
+- 配置值管理
 - 配置版本控制
 
-### 2. 动æ€<EFBFBD>é…<EFBFBD>ç½?
-- è¿<EFBFBD>行时é…<EFBFBD>置更æ–?
-- é…<EFBFBD>置热更æ–?
+### 2. 动态配置
+- 运行时配置更新
+- 配置热更新
 
 ---