feat: migrate from Element Plus to Ant Design Vue and update Vite configuration for better dependency management

- Updated Vite configuration to manually chunk Ant Design Vue for improved dependency management.
- Added a comprehensive migration testing checklist for transitioning from Element Plus 2.13.0 to Ant Design Vue 4.x, covering various components and functionalities.

backend/api/auth.py

@@ -100,6 +100,27 @@ async def get_qrcode_status(
         )
 
 
+@router.delete("/qrcode_session/{session_id}", response_model=dict, summary="取消二维码登录会话")
+async def cancel_qrcode_session(
+    session_id: str
+):
+    """
+    取消二维码登录会话
+
+    - **session_id**: 会话 ID
+
+    用于用户关闭二维码对话框时,终止后台的 Selenium 进程
+    """
+    try:
+        result = AuthService.cancel_qrcode_session(session_id)
+        return result
+    except Exception as e:
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"取消会话失败: {str(e)}"
+        )
+
+
 @router.post("/verify_token", response_model=dict, summary="验证 Token 有效性")
 async def verify_token(
     request: TokenVerifyRequest,

backend/api/tasks.py

@@ -2,6 +2,7 @@ from fastapi import APIRouter, Depends, HTTPException, status
 from sqlalchemy.orm import Session
 from typing import List
 from datetime import datetime, timedelta
+from pydantic import BaseModel, Field
 
 from backend.models import get_db, User
 from backend.schemas.task import TaskCreate, TaskUpdate, TaskResponse
@@ -11,6 +12,11 @@ from backend.dependencies import get_current_user
 router = APIRouter()
 
 
+class CronValidateRequest(BaseModel):
+    """Cron 表达式验证请求"""
+    cron_expression: str = Field(..., min_length=9, description="Crontab 表达式")
+
+
 @router.post("/", response_model=TaskResponse, status_code=status.HTTP_201_CREATED, summary="创建打卡任务")
 async def create_task(
     task_data: TaskCreate,
@@ -181,7 +187,7 @@ async def toggle_task(
 
 
 @router.post("/validate-cron", summary="验证 Crontab 表达式")
-async def validate_cron_expression(request: dict):
+async def validate_cron_expression(request: CronValidateRequest):
     """
     验证 Crontab 表达式并预览下一个执行时间
 
@@ -199,7 +205,7 @@ async def validate_cron_expression(request: dict):
         "description": "每天 20:00"
     }
     """
-    cron_expr = request.get('cron_expression', '').strip()
+    cron_expr = request.cron_expression.strip()
 
     if not cron_expr:
         raise HTTPException(

backend/api/users.py

@@ -138,8 +138,11 @@ async def get_current_user_token_status(
                 minutes_until_expiry = (exp_timestamp - current_timestamp) // 60
                 expiring_soon = minutes_until_expiry <= 30
 
-        except ValueError:
-            pass
+        except ValueError as e:
+            # jwt_exp 格式不正确，记录警告
+            import logging
+            logger = logging.getLogger(__name__)
+            logger.warning(f"用户 {current_user.id} ({current_user.alias}) 的 jwt_exp 格式不正确: {current_user.jwt_exp}, 错误: {e}")
 
     return {
         "is_valid": is_valid,
@@ -256,7 +259,37 @@ async def update_user(
             )
 
     try:
+        # 获取更新前的用户状态
+        old_user = UserService.get_user_by_id(user_id, db)
+        if not old_user:
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail=f"用户 ID {user_id} 不存在"
+            )
+
+        # 保存更新前的审批状态 (先读取后转换为 Python bool)
+        old_approved_value = old_user.is_approved
+        was_approved_before = True if old_approved_value else False
+
+        # 更新用户信息
         user = UserService.update_user(user_id, user_data, db)
+
+        # 检查是否需要发送审批通过邮件
+        new_approved_value = user.is_approved
+        is_approved_now = True if new_approved_value else False
+
+        is_admin = (current_user.role == "admin")
+        needs_notification = (is_admin and (not was_approved_before) and is_approved_now)
+
+        if needs_notification:
+            try:
+                from backend.services.email_service import EmailService
+                EmailService.notify_user_approved(user)
+            except Exception as e:
+                # 邮件发送失败不影响审批操作
+                import logging
+                logging.getLogger(__name__).error(f"发送审批通过邮件失败: {e}")
+
         return user
     except ValueError as e:
         raise HTTPException(