Update app.py

app.py

@@ -192,11 +192,7 @@ def format_chat_display(history):
         elif item["role"] == "assistant":
             messages.append({"role": "assistant", "content": item.get("content", "")})
 
-    tuple_messages = []
-    for message in messages:
-        tuple_message = [message["role"], message["content"]]
-        tuple_messages.append(tuple_message)
-    return tuple_messages
+    return messages
 
 
 def handle_upload(files):