refactor(server): remove Department/UserDepartment entities, CampusScope, and departmentId from all entities

- Delete department.entity.ts, user-department.entity.ts
- Remove Department/UserDepartment from entities/index.ts
- Remove departmentId column from 18 entities (AttendanceRecord, ArchiveAttachment, Bill, ClassSchedule, Classroom, ClassroomRental, Deposit, DepositInstallment, ExamScore, LearningRecord, Occupancy, PersonalExpense, ResultArchive, Room, RoomExpense, Student, StudentEnrollment, StudentProfile, StudentReport)
- Remove departments/ module entirely
- Delete campus-scope.ts, campus-scope.middleware.ts (request-utils.ts kept — it's just IP extraction)
- Simplify common.module.ts to empty module
- Remove CampusScopeMiddleware from app.module.ts
- Remove all CampusScope injections and filter calls across all services
- Remove departmentId from all DTOs and controllers
- Simplify dingtalk/wecom sync to only sync users (no dept table)
- Update seed module to remove department seeding
- Clean frontend compilation

apps/server/src/app.module.ts

@@ -1,4 +1,4 @@
-import { Module, NestModule, MiddlewareConsumer } from '@nestjs/common';
+import { Module } from '@nestjs/common';
 import { APP_GUARD } from '@nestjs/core';
 import { ConfigModule, ConfigService } from '@nestjs/config';
 import { EventEmitterModule } from '@nestjs/event-emitter';
@@ -32,8 +32,6 @@ import {
   SyncLog,
   SyncState,
   Notification,
-  Department,
-  UserDepartment,
   StudentProfile,
   StudentEnrollment,
   ExamScore,
@@ -63,7 +61,6 @@ 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';
 import { CommonModule } from './common/common.module';
 import { ArchiveModule } from './archive/archive.module';
 import { ExpenseTypesModule } from './expense-types/expense-types.module';
@@ -71,7 +68,6 @@ import { ExpenseTypesModule } from './expense-types/expense-types.module';
 import { IntegrationConfig, IntegrationConfigDetail } from './integration/entities/integration-config.entity';
 import { IntegrationConfigModule } from './integration/config/config.module';
 
-import { CampusScopeMiddleware } from './common/campus-scope.middleware';
 @Module({
   imports: [
     ConfigModule.forRoot({ isGlobal: true }),
@@ -113,8 +109,6 @@ import { CampusScopeMiddleware } from './common/campus-scope.middleware';
           AttendanceRecord,
           DingAttendanceRaw,
           Notification,
-          Department,
-          UserDepartment,
           StudentProfile,
           StudentEnrollment,
           ExamScore,
@@ -167,7 +161,6 @@ import { CampusScopeMiddleware } from './common/campus-scope.middleware';
     ClassroomRentalsModule,
     SyncModule,
     NotificationsModule,
-    DepartmentsModule,
     CommonModule,
     ArchiveModule,
     IntegrationConfigModule,
@@ -179,8 +172,4 @@ import { CampusScopeMiddleware } from './common/campus-scope.middleware';
     { provide: APP_GUARD, useClass: PermissionGuard },
   ],
 })
-export class AppModule implements NestModule {
-  configure(consumer: MiddlewareConsumer) {
-    consumer.apply(CampusScopeMiddleware).forRoutes('*');
-  }
-}
+export class AppModule {}