feat: 添加部门管理功能、主题切换和多语言支持

refactor(dashboard): 重构用户管理页面和路由结构

feat(server): 实现部门管理API和RBAC增强功能

docs: 更新用户手册和管理员指南文档

style: 统一图标使用和组件命名规范

test: 添加部门服务和数据隔离测试用例

chore: 更新依赖和配置文件

server/src/api/routes/department.ts

@@ -0,0 +1,18 @@
+import { Router } from 'express';
+import { DepartmentController } from '../controllers/DepartmentController';
+import { authenticate } from '../../middleware/auth';
+
+const router = Router();
+
+router.use(authenticate);
+
+router.post('/', DepartmentController.createDepartment);
+router.put('/:id', DepartmentController.updateDepartment);
+router.delete('/:id', DepartmentController.deleteDepartment);
+router.get('/tree', DepartmentController.getDepartmentTree);
+router.get('/stats/hierarchy', DepartmentController.getHierarchyStats);
+router.post('/:departmentId/manager', DepartmentController.assignManager);
+router.get('/:departmentId/manager', DepartmentController.getManager);
+router.get('/:departmentId/stats', DepartmentController.getDepartmentStats);
+
+export default router;