refactor: remove User-based import and RBAC UserDingMapping endpoints

apps/server/src/rbac/dto/rbac.dto.ts

@@ -1,4 +1,4 @@
-import { IsString, MinLength, IsOptional, IsArray, IsBoolean, IsInt, IsNotEmpty } from 'class-validator';
+import { IsString, MinLength, IsOptional, IsArray, IsBoolean } from 'class-validator';
 
 export class CreateRoleDto {
   @IsString()
@@ -80,12 +80,3 @@ export class UpdateProfileDto {
   qualifications?: string;
 }
 
-export class CreateStudentDingMappingDto {
-  @IsInt()
-  @IsNotEmpty()
-  studentId: number;
-
-  @IsString()
-  @IsNotEmpty()
-  dingUserId: string;
-}

apps/server/src/rbac/rbac.controller.ts

@@ -19,7 +19,6 @@ import {
   UpdateUserDto,
   ResetPasswordDto,
   UpdateProfileDto,
-  CreateStudentDingMappingDto,
 } from './dto/rbac.dto';
 import { JwtAuthGuard } from '../auth/guards/jwt-auth.guard';
 import { RequirePermission } from '../auth/decorators/permission.decorator';
@@ -299,32 +298,6 @@ export class RbacController {
     }
   }
 
-
-  // ---- 钉钉用户绑定 ----
-
-  @Get('user-ding-mappings')
-  @RequirePermission('user:view')
-  async getStudentDingMappings() {
-    return this.rbacService.getUserDingMappings();
-  }
-
-  @Get('user-ding-mappings/unbound-users')
-  @RequirePermission('user:view')
-  async getUnboundUsers() {
-    return this.rbacService.getUnboundUsers();
-  }
-
-  @Post('user-ding-mappings')
-  @RequirePermission('user:edit')
-  async createStudentDingMapping(@Body() dto: CreateStudentDingMappingDto) {
-    return this.rbacService.createUserDingMapping(dto);
-  }
-
-  @Delete('user-ding-mappings/:id')
-  @RequirePermission('user:delete')
-  async deleteStudentDingMapping(@Param('id') id: string) {
-    return this.rbacService.deleteUserDingMapping(+id);
-  }
   // ---- 教师工作台 ----
 
   @Get('teacher-workspace')

apps/server/src/rbac/rbac.service.ts

@@ -1,8 +1,8 @@
-import { Injectable, Logger, NotFoundException, ConflictException } from '@nestjs/common';
+import { Injectable, Logger, NotFoundException } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
 import { Repository, In } from 'typeorm';
 import * as bcrypt from 'bcryptjs';
-import { Permission, Role, User, Class, ClassStudent, ClassTeacher, ClassSchedule, Student, StudentDingMapping } from '../entities';
+import { Permission, Role, User, Class, ClassStudent, ClassTeacher, ClassSchedule, Student } from '../entities';
 
 const PRESET_PERMISSIONS: Array<{ code: string; name: string; group: string }> = [
   { code: 'dashboard:view', name: '查看数据面板', group: 'dashboard' },
@@ -171,7 +171,6 @@ export class RbacService {
     @InjectRepository(ClassTeacher) private classTeacherRepo: Repository<ClassTeacher>,
     @InjectRepository(ClassSchedule) private classScheduleRepo: Repository<ClassSchedule>,
     @InjectRepository(Student) private studentRepo: Repository<Student>,
-    @InjectRepository(StudentDingMapping) private mappingRepo: Repository<StudentDingMapping>,
   ) {}
 
   async seedData(): Promise<void> {
@@ -247,32 +246,6 @@ export class RbacService {
     this.logger.log(`种子数据初始化完成: ${allPerms.length} 权限点, ${allRoles.length} 角色`);
   }
 
-  // ---- 钉钉用户绑定 ----
-
-  async getUserDingMappings(): Promise<StudentDingMapping[]> {
-    return this.mappingRepo.find({ relations: ['student'] });
-  }
-
-  async createUserDingMapping(dto: { studentId: number; dingUserId: string }) {
-    const existing = await this.mappingRepo.findOne({ where: { dingUserId: dto.dingUserId } });
-    if (existing) throw new ConflictException(`钉钉用户 ${dto.dingUserId} 已绑定到学生 #${existing.studentId}`);
-    const studentExisting = await this.mappingRepo.findOne({ where: { studentId: dto.studentId } });
-    if (studentExisting) throw new ConflictException(`学生 #${dto.studentId} 已绑定到钉钉用户 ${studentExisting.dingUserId}`);
-    const mapping = this.mappingRepo.create(dto);
-    return this.mappingRepo.save(mapping);
-  }
-
-  async deleteUserDingMapping(id: number) {
-    const mapping = await this.mappingRepo.findOne({ where: { id } });
-    if (!mapping) throw new NotFoundException('绑定记录不存在');
-    await this.mappingRepo.remove(mapping);
-    return { success: true };
-  }
-
-  // ponytail: StudentDingMapping.studentId is Student FK, not User; method deleted in Task 4
-  async getUnboundUsers(): Promise<{ id: number; username: string; name: string }[]> {
-    return [];
-  }
 
   async findAllRoles(): Promise<Role[]> {
     return this.roleRepo.find({