feat: 员工同步增加离职处理功能

- 全量同步 (sync_employees) 现在会检测并软删除离职员工
- 增量同步改为软删除而非物理删除，更安全
- 离职处理：设置 is_active=False, is_deleted=True
- 前端显示离职处理数量统计

backend/app/services/employee_sync_service.py

@@ -333,6 +333,7 @@ class EmployeeSyncService:
             'users_created': 0,
             'users_existing': 0,
             'users_restored': 0,
+            'users_departed': 0,
             'users_skipped': 0,
             'teams_created': 0,
             'positions_created': 0,
@@ -408,7 +409,29 @@ class EmployeeSyncService:
                     stats['errors'].append(error_msg)
                     continue
             
-            # 3. 提交所有更改
+            # 3. 处理离职员工（软删除）
+            dingtalk_phones = {emp.get('phone') for emp in employees if emp.get('phone')}
+            
+            # 获取系统中所有活跃用户（排除 admin）
+            stmt = select(User).where(
+                User.is_deleted == False,
+                User.is_active == True,
+                User.username != 'admin',
+                User.role != 'admin'
+            )
+            result = await self.db.execute(stmt)
+            system_users = result.scalars().all()
+            
+            # 找出离职员工（系统有但钉钉没有）
+            for user in system_users:
+                if user.phone and user.phone not in dingtalk_phones:
+                    # 软删除：标记为离职
+                    user.is_active = False
+                    user.is_deleted = True
+                    stats['users_departed'] += 1
+                    logger.info(f"🚪 标记离职员工: {user.full_name} ({user.phone})")
+            
+            # 4. 提交所有更改
             await self.db.commit()
             logger.info("✅ 数据库事务已提交")
             
@@ -422,14 +445,15 @@ class EmployeeSyncService:
             stats['end_time'] = datetime.now()
             stats['duration'] = (stats['end_time'] - stats['start_time']).total_seconds()
         
-        # 4. 输出统计信息
+        # 5. 输出统计信息
         logger.info("=" * 60)
         logger.info("同步完成统计")
         logger.info("=" * 60)
-        logger.info(f"总员工数: {stats['total_employees']}")
+        logger.info(f"钉钉在职员工: {stats['total_employees']}")
         logger.info(f"新增用户: {stats['users_created']}")
         logger.info(f"已存在用户: {stats['users_existing']}")
         logger.info(f"恢复用户: {stats['users_restored']}")
+        logger.info(f"离职处理: {stats['users_departed']}")
         logger.info(f"跳过用户: {stats['users_skipped']}")
         logger.info(f"耗时: {stats['duration']:.2f}秒")
         
@@ -696,50 +720,33 @@ class EmployeeSyncService:
                     stats['errors'].append(error_msg)
                     continue
             
-            # 5. 删除离职员工（物理删除）
-            # 先flush之前的新增操作，避免与删除操作冲突
+            # 5. 处理离职员工（软删除）
+            # 先flush之前的新增操作
             await self.db.flush()
             
-            # 收集需要删除的用户ID
-            users_to_delete = []
+            # 标记离职员工
             for user in system_users:
                 if user.phone and user.phone in phones_to_delete:
                     # 双重保护：确保不删除admin
                     if user.username == 'admin' or user.role == 'admin':
-                        logger.warning(f"⚠️ 跳过删除管理员账户: {user.username}")
+                        logger.warning(f"⚠️ 跳过处理管理员账户: {user.username}")
                         continue
                     
-                    users_to_delete.append({
-                        'id': user.id,
+                    try:
+                        # 软删除：标记为离职
+                        user.is_active = False
+                        user.is_deleted = True
+                        
+                        stats['deleted_users'].append({
                             'full_name': user.full_name,
                             'phone': user.phone,
                             'username': user.username
                         })
-            
-            # 批量删除用户及其关联数据
-            for user_info in users_to_delete:
-                try:
-                    user_id = user_info['id']
-                    
-                    # 先清理关联数据（外键约束）
-                    await self._cleanup_user_related_data(user_id)
-                    
-                    # 用SQL直接删除用户（避免ORM的级联操作冲突）
-                    await self.db.execute(
-                        text("DELETE FROM users WHERE id = :user_id"),
-                        {"user_id": user_id}
-                    )
-                    
-                    stats['deleted_users'].append({
-                        'full_name': user_info['full_name'],
-                        'phone': user_info['phone'],
-                        'username': user_info['username']
-                    })
                         stats['deleted_count'] += 1
-                    logger.info(f"🗑️ 删除离职员工: {user_info['full_name']} ({user_info['phone']})")
+                        logger.info(f"🚪 标记离职员工: {user.full_name} ({user.phone})")
                         
                     except Exception as e:
-                    error_msg = f"删除员工 {user_info['full_name']} 失败: {str(e)}"
+                        error_msg = f"处理离职员工 {user.full_name} 失败: {str(e)}"
                         logger.error(error_msg)
                         stats['errors'].append(error_msg)
                         continue
@@ -763,7 +770,7 @@ class EmployeeSyncService:
         logger.info("增量同步完成统计")
         logger.info("=" * 60)
         logger.info(f"新增员工: {stats['added_count']}")
-        logger.info(f"删除员工: {stats['deleted_count']}")
+        logger.info(f"离职处理: {stats['deleted_count']}")
         logger.info(f"跳过员工: {stats['skipped_count']}")
         logger.info(f"耗时: {stats['duration']:.2f}秒")
         

frontend/src/views/admin/system-settings.vue

@@ -348,12 +348,14 @@ const triggerSync = async () => {
       const created = data.users_created || 0
       const existing = data.users_existing || 0
       const restored = data.users_restored || 0
+      const departed = data.users_departed || 0
       const skipped = data.users_skipped || 0
       
-      let msg = `同步完成！共处理 ${data.total_employees || 0} 名员工`
+      let msg = `同步完成！钉钉在职 ${data.total_employees || 0} 人`
       if (created > 0) msg += `，新增 ${created} 人`
       if (existing > 0) msg += `，已存在 ${existing} 人`
       if (restored > 0) msg += `，恢复 ${restored} 人`
+      if (departed > 0) msg += `，离职 ${departed} 人`
       if (skipped > 0) msg += `，跳过 ${skipped} 人`
       
       ElMessage.success(msg)