feat(邮件验证): 添加发件人和收件人邮箱格式验证

在测试文件中添加邮箱格式验证逻辑，使用正则表达式检查邮箱格式是否正确
当邮箱格式无效时，记录错误日志并返回验证失败

test_celery_email.py

@@ -77,6 +77,22 @@ def test_celery_email_config():
             logger.error(f"缺少必要的配置: {', '.join(missing_configs)}")
             return False
 
+        # 验证邮箱格式
+        import re
+        email_pattern = r'^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$'
+        
+        # 验证发件人邮箱格式
+        if config.smtp_username and not re.match(email_pattern, config.smtp_username):
+            logger.error(f"发件人邮箱格式不正确: {config.smtp_username}")
+            logger.error("请在系统配置页面输入有效的邮箱地址")
+            return False
+        
+        # 验证收件人邮箱格式（如果已配置）
+        if config.recipient_email and not re.match(email_pattern, config.recipient_email):
+            logger.error(f"收件人邮箱格式不正确: {config.recipient_email}")
+            logger.error("请在系统配置页面输入有效的邮箱地址")
+            return False
+
         # 测试Celery连接
         logger.info("测试Celery连接...")
         try:
@@ -188,7 +204,16 @@ def celery_send_test_email(self, test_mode=True):
         if not from_email:
             raise ValueError("未配置发件邮箱 (smtp_username)")
 
+        # 验证发件人邮箱格式
+        import re
+        email_pattern = r'^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$'
+        if not re.match(email_pattern, from_email):
+            raise ValueError(f"发件人邮箱格式不正确: {from_email}")
+
         to_email = config.recipient_email or from_email
+        # 验证收件人邮箱格式
+        if not re.match(email_pattern, to_email):
+            raise ValueError(f"收件人邮箱格式不正确: {to_email}")
         recipient_list = [to_email]
 
         # 获取SMTP配置
@@ -321,7 +346,16 @@ def celery_send_html_report_email(self, include_attachment=False):
         if not from_email:
             raise ValueError("未配置发件邮箱")
 
+        # 验证发件人邮箱格式
+        import re
+        email_pattern = r'^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$'
+        if not re.match(email_pattern, from_email):
+            raise ValueError(f"发件人邮箱格式不正确: {from_email}")
+
         to_email = config.recipient_email or from_email
+        # 验证收件人邮箱格式
+        if not re.match(email_pattern, to_email):
+            raise ValueError(f"收件人邮箱格式不正确: {to_email}")
         if isinstance(to_email, list):
             recipient_list = to_email
         else: