Add notification sender and update item routes

model/response.py

@@ -1,10 +1,11 @@
-from datetime import datetime
-
 from pydantic import BaseModel
 
+from model.base import SQLModelBase
+
+
 class DefaultResponse(BaseModel):
     code: int = 0
-    data: dict | list | bool | None
+    data: dict | list | bool | SQLModelBase | None = None
     msg: str = ""
 
 # FastAPI 鉴权返回模型