Update app.py

app.py

@@ -194,8 +194,8 @@ def format_messages_for_deepsider(messages: List[ChatMessage]) -> str:
         role = msg.role
         # 将OpenAI的角色映射到DeepSider能理解的格式
         if role == "system":
-            # 系统消息放在开头 作为指导
-            prompt = f"{msg.content}\n\n" + prompt
+            # 保持system消息在原始位置
+            prompt += f"System: {msg.content}\n\n"
         elif role == "user":
             prompt += f"Human: {msg.content}\n\n"
         elif role == "assistant":