增加代码知识库；修复文档处理内容；增加API设置

rag-web-ui/backend/app/api/api_v1/chat.py

@@ -120,7 +120,8 @@ async def create_message(
             messages=messages,
             knowledge_base_ids=knowledge_base_ids,
             chat_id=chat_id,
-            db=db
+            db=db,
+            user_id=current_user.id,
         ):
             yield chunk
 
@@ -152,4 +153,4 @@ def delete_chat(
     
     db.delete(chat)
     db.commit()
-    return {"status": "success"}
+    return {"status": "success"}