claude强化功能

backend/llm.py

@@ -40,3 +40,8 @@ def ask(user_content: str, temperature: float = 0.5, max_tokens: int = 900) -> s
         {"role": "system", "content": SYSTEM_PROMPT},
         {"role": "user", "content": user_content},
     ], temperature=temperature, max_tokens=max_tokens)
+
+
+def ask_with_messages(messages: list, temperature: float = 0.5, max_tokens: int = 900) -> str:
+    """使用完整消息列表调用（支持多轮对话）"""
+    return chat(messages, temperature=temperature, max_tokens=max_tokens)