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/classrooms/classrooms.controller.ts

@@ -211,8 +211,7 @@ export class ClassroomsController {
         supervisor: String(row.getCell(7).value || '') || undefined,
       });
     });
-    const departmentId = req.headers?.['x-campus-id'] ? parseInt(String(req.headers['x-campus-id']), 10) || undefined : undefined;
-    const result = await this.service.batchImport(rows, departmentId);
+    const result = await this.service.batchImport(rows);
     await this.logService.log({
       userId: req.user?.id,
       username: req.user?.username,

apps/server/src/classrooms/classrooms.service.ts

@@ -4,7 +4,6 @@ import { Repository, Not } from 'typeorm';
 import { Classroom } from '../entities/classroom.entity';
 import { ClassroomRental } from '../entities/classroom-rental.entity';
 import { ClassSchedule } from '../entities/class-schedule.entity';
-import { CampusScope } from '../common/campus-scope';
 import { CreateClassroomDto, UpdateClassroomDto } from './dto/classroom.dto';
 
 @Injectable()
@@ -14,7 +13,6 @@ export class ClassroomsService {
     @InjectRepository(Classroom) private repo: Repository<Classroom>,
     @InjectRepository(ClassroomRental) private rentalRepo: Repository<ClassroomRental>,
     @InjectRepository(ClassSchedule) private scheduleRepo: Repository<ClassSchedule>,
-    private readonly scope: CampusScope,
   ) {}
 
   async findAll(query?: { building?: string; roomType?: string; includeArchived?: boolean }) {
@@ -22,7 +20,7 @@ export class ClassroomsService {
     if (query?.building) where.building = query.building;
     if (query?.roomType) where.roomType = query.roomType;
     if (!query?.includeArchived) where.status = Not('archived');
-    const list = await this.repo.find({ where: await this.scope.filter(where), order: { building: 'ASC', name: 'ASC' } });
+    const list = await this.repo.find({ where, order: { building: 'ASC', name: 'ASC' } });
     const usageMap = await this.getCurrentUsageForClassrooms(list.map((c) => c.id));
     return list.map((c) => ({ ...c, currentUsage: usageMap.get(c.id) ?? null }));
   }
@@ -37,9 +35,7 @@ export class ClassroomsService {
   async create(dto: CreateClassroomDto) {
     const exists = await this.repo.findOne({ where: { name: dto.name } });
     if (exists) throw new BadRequestException(`教室 ${dto.name} 已存在`);
-    const entity = this.repo.create(dto);
-    if (dto.departmentId) entity.departmentId = dto.departmentId;
-    return this.repo.save(entity);
+    return this.repo.save(this.repo.create(dto));
   }
 
   async update(id: number, dto: UpdateClassroomDto) {
@@ -136,7 +132,6 @@ export class ClassroomsService {
       roomType?: string;
       courseType?: string;
     }[],
-    departmentId?: number,
   ) {
     let imported = 0;
     let skipped = 0;
@@ -145,7 +140,7 @@ export class ClassroomsService {
       if (!row.name?.trim()) { skipped++; continue; }
       const exists = await this.repo.findOne({ where: { name: row.name.trim() } });
       if (exists) { errors.push(`教室 ${row.name} 已存在`); skipped++; continue; }
-      await this.repo.save(this.repo.create({ ...row, capacity: row.capacity || 30, departmentId: departmentId ?? undefined }));
+      await this.repo.save(this.repo.create({ ...row, capacity: row.capacity || 30 }));
       imported++;
     }
     return { message: `成功导入 ${imported} 间教室，跳过 ${skipped} 间`, imported, skipped, errors: errors.length > 0 ? errors : undefined };

apps/server/src/classrooms/dto/classroom.dto.ts

@@ -33,9 +33,6 @@ export class CreateClassroomDto {
   @IsString()
   notes?: string;
 
-  @IsOptional()
-  @IsInt()
-  departmentId?: number;
 }
 
 export class UpdateClassroomDto {