feat(web): 工作台页面改造 — 管理员/运营数据改用真实 API

- AdminDashboard 移除硬编码模块列表，改用 system-health/user-activity/modules API
- OperatorWorkbench 移除硬编码积分动态和文章统计，改用 points-recent-activity/article-stats API
- 新增 dashboard.ts API 客户端，AxiosResponse 解包到 data.data
- Home.tsx 集成 4 个角色工作台组件路由
- useDashboardRole 支持 health_manager 角色

apps/web/src/hooks/useDashboardRole.ts

@@ -1,8 +1,8 @@
 import { useAuthStore } from '../stores/auth';
 
-type DashboardRole = 'doctor' | 'nurse' | 'admin' | 'operator';
+type DashboardRole = 'doctor' | 'health_manager' | 'nurse' | 'admin' | 'operator';
 
-const ROLE_PRIORITY: DashboardRole[] = ['doctor', 'nurse', 'admin', 'operator'];
+const ROLE_PRIORITY: DashboardRole[] = ['doctor', 'health_manager', 'nurse', 'admin', 'operator'];
 
 export function useDashboardRole(): DashboardRole {
   const user = useAuthStore(s => s.user);