Fix additional AI response display issues by ensuring consistent message variable usage

app.py

@@ -384,7 +384,7 @@ def respond(
         # 发送webhook通知（仅在有重要对话时）
         if len(response) > 50:  # 只有较长的回复才发送通知
             send_webhook_notification("new_conversation", {
-                "user_message": message,
+                "user_message": conversation_data["message"],  # 使用conversation_data中的原始消息
                 "ai_response": response,
                 "model_used": model_used,
                 "character_role": character_role
@@ -403,7 +403,7 @@ def respond(
         send_webhook_notification("error", {
             "type": "processing_error",
             "message": str(e),
-            "user_message": message
+            "user_message": conversation_data["message"]  # 使用conversation_data中的原始消息
         })