feat: DingTalk attendance import + integration config + expense types + UI polish

Server:
- Add DingTalk attendance import service with SSE progress streaming
- Add IntegrationConfig entity & module for multi-tenant DingTalk setup
- Add ExpenseType entity & ExpenseTypesModule
- Add SeedModule for DB initialization
- Add UserDingMapping entity for DingTalk user linkage
- Attendance service: import flow with dedup & student auto-mapping
- Rooms service: time-range overlap queries
- Sync controller/service: DingTalk integration wiring
- Permission guard: refactor to pure re-export
- Campus scope middleware: tenant-aware filtering

Admin UI:
- Attendance page: import UI with progress & result summary
- All pages: tableStyle/tablePagination standardization
- Login page: responsive styling
- Sensitive data: useViewSensitive hook for masked viewing
- Vite config: path aliases, build optimization
- Test infra: vitest config, test utilities

Docs: PRD DingTalk batch 1 & 2 design docs

apps/server/src/rooms/rooms.controller.ts

@@ -48,8 +48,8 @@ export class RoomsController {
 
   @Get('visual')
   @RequirePermission('room:view')
-  getVisual() {
-    return this.service.getRoomVisual();
+  getVisual(@Query('asOf') asOf?: string) {
+    return this.service.getRoomVisual(asOf);
   }
 
   @Get('template')