增加对接DIFY前端支持功能

backend/app/api/routers/request/dbOrm.py

@@ -1,11 +1,10 @@
 import os
-from typing import Dict, List, Any, Optional, cast
+from typing import Dict, List, Any
 
-from fastapi import APIRouter
-from pydantic import BaseModel, Field
-from sqlalchemy import create_engine, Column, String, Integer, Boolean, JSON,ForeignKey
-from sqlalchemy.orm import sessionmaker, declarative_base,relationship
+from pydantic import BaseModel
+from sqlalchemy import create_engine, Column, String, Integer, JSON
 from sqlalchemy.engine.reflection import Inspector
+from sqlalchemy.orm import sessionmaker, declarative_base
 
 Base = declarative_base()