feat: add DepartmentsModule with DTO, Service, and stub controller

apps/server/src/app.module.ts

@@ -30,6 +30,8 @@ import {
   SyncLog,
   SyncState,
   Notification,
+  Department,
+  UserDepartment,
  } from './entities';
 import { AuthModule } from './auth/auth.module';
 import { RbacModule } from './rbac/rbac.module';
@@ -51,6 +53,7 @@ import { SchedulesModule } from './schedules/schedules.module';
 import { ClassroomRentalsModule } from './classroom-rentals/classroom-rentals.module';
 import { SyncModule } from './sync/sync.module';
 import { NotificationsModule } from './notifications/notifications.module';
+import { DepartmentsModule } from './departments/departments.module';
 
 @Module({
   imports: [
@@ -90,9 +93,9 @@ import { NotificationsModule } from './notifications/notifications.module';
           ClassSchedule,
           AttendanceRecord,
           DingAttendanceRaw,
-          SyncLog,
-          SyncState,
           Notification,
+          Department,
+          UserDepartment,
          ];
         if (dbType === 'mysql') {
           return {
@@ -133,6 +136,7 @@ import { NotificationsModule } from './notifications/notifications.module';
     ClassroomRentalsModule,
     SyncModule,
     NotificationsModule,
+    DepartmentsModule,
   ],
   providers: [
     { provide: APP_GUARD, useClass: ThrottlerGuard },