refactor: replace UserDingMapping with StudentDingMapping entity

apps/server/src/sync/sync.service.ts

@@ -1,7 +1,7 @@
 import { BadRequestException, Injectable, Logger } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
 import { DataSource, Repository } from 'typeorm';
-import { SyncLog, SyncState, UserDingMapping, ClassStudent, ClassTeacher, Department } from '../entities';
+import { SyncLog, SyncState, StudentDingMapping, ClassStudent, ClassTeacher, Department } from '../entities';
 import { Class as ClassEntity } from '../entities/class.entity';
 import type { SyncPlatform, SyncType, SyncStatus } from '../entities/sync-log.entity';
 import { DingTalkService } from '../integration/dingtalk.service';
@@ -30,8 +30,8 @@ export class SyncService {
     private readonly syncLogRepo: Repository<SyncLog>,
     @InjectRepository(SyncState)
     private readonly syncStateRepo: Repository<SyncState>,
-    @InjectRepository(UserDingMapping)
-    private readonly mappingRepo: Repository<UserDingMapping>,
+    @InjectRepository(StudentDingMapping)
+    private readonly studentDingMappingRepo: Repository<StudentDingMapping>,
     @InjectRepository(User)
     private readonly userRepo: Repository<User>,
     @InjectRepository(Student)
@@ -123,7 +123,7 @@ export class SyncService {
   /**
    * 从钉钉导入用户：roleId 非 null → 老师（User + 指定角色），roleId null → 学生（User + Student）。
    * 支持同时创建班级并建立师生关联。
-   * 已存在 UserDingMapping 的记录跳过。
+   * 已存在 StudentDingMapping 的记录跳过。
    */
   async importDingTalkUsers(
     users: ImportUserDto[],
@@ -190,7 +190,7 @@ export class SyncService {
 
       // 2. 导入用户（逐用户）
       for (const u of users) {
-        const existingMapping = await manager.findOne(UserDingMapping, {
+        const existingMapping = await manager.findOne(StudentDingMapping, {
           where: { dingUserId: u.dingUserId },
         });
 
@@ -199,7 +199,7 @@ export class SyncService {
 
         if (existingMapping) {
           skipped++;
-          userId = existingMapping.userId;
+          userId = existingMapping.studentId;
           // 判断是老师还是学生：查角色
           const existingUser = await manager.findOne(User, {
             where: { id: userId },
@@ -258,15 +258,13 @@ export class SyncService {
           }
 
           // 钉钉映射（幂等：可能已被 syncAll 创建）
-          const existingMappingForUser = await manager.findOne(UserDingMapping, {
+          const existingMappingForUser = await manager.findOne(StudentDingMapping, {
             where: { dingUserId: u.dingUserId },
           });
           if (!existingMappingForUser) {
-            const mapping = manager.create(UserDingMapping, {
+            const mapping = manager.create(StudentDingMapping, {
               dingUserId: u.dingUserId,
-              userId: user.id,
-              dingName: u.name,
-              dingMobile: u.mobile,
+              studentId: user.id,
             });
             await manager.save(mapping);
           }
@@ -422,7 +420,7 @@ export class SyncService {
       const end = endDate.toISOString().slice(0, 10);
 
       this.logger.log(`Importing DingTalk attendance: ${start} ~ ${end}`);
-      const mappings = await this.mappingRepo.find();
+      const mappings = await this.studentDingMappingRepo.find();
       const userIds = mappings.map((m) => m.dingUserId);
       const importResult = await this.attendanceImportService.importFromDingTalk({
         startDate: start,