feat: 100% async - native async serializers (adata/asave/acreate), async cache (redis.asyncio), view call-site migration

user/views/email.py

@@ -102,7 +102,7 @@ class SendChangeEmailCodeAPIView(APIView):
 
         try:
             # save() 内部触发验证码邮件发送（Celery/cache/SMTP 链路），线程池兜底
-            email = await sync_to_async(serializer.save)()
+            email = await serializer.asave()
             await sync_to_async(reset_failures)(operation, identifier)
             return create_standardized_response(
                 data={'email_sent': True},
@@ -157,11 +157,11 @@ class ChangeEmailAPIView(APIView):
             )
 
         try:
-            updated_user = await sync_to_async(serializer.save)()
+            updated_user = await serializer.asave()
             user_serializer = UserSerializer(updated_user)
 
             return create_standardized_response(
-                data={'user': user_serializer.data},
+                data={'user': await user_serializer.adata},
                 code=ResponseCode.EMAIL_CHANGED,
                 status_code=status.HTTP_200_OK
             )