fix: 修复 Gradio 中 type="messages" 的聊天历史记录处理逻辑

app.py

@@ -14,12 +14,11 @@ def respond(message, history, system_message, hf_token: gr.OAuthToken = None):
     if system_message:
         messages.append(SystemMessage(content=system_message))
     
-    for turn in history:
-        user_message, bot_message = turn
-        if user_message:
-            messages.append(HumanMessage(content=user_message))
-        if bot_message:
-            messages.append(AIMessage(content=bot_message))
+    for chat_message in history:
+        if chat_message.role == "user":
+            messages.append(HumanMessage(content=chat_message.content))
+        elif chat_message.role == "assistant":
+            messages.append(AIMessage(content=chat_message.content))
             
     messages.append(HumanMessage(content=message))