remove challenge's content

prompt/llm.py

@@ -14,17 +14,16 @@ SYSTEM_PROMPT = """你是一个网页生成助手。根据用户的需求描述
 6. 由于任何外部链接都被屏蔽，使用纯 HTML、CSS 和 JS 实现功能，不要依赖外部库"""
 
 
-def build_messages(task_content: str, history: list[dict]) -> list[dict]:
+def build_messages(history: list[dict]) -> list[dict]:
     """Build the message list for the LLM API call."""
-    system = SYSTEM_PROMPT + f"\n\n当前挑战任务要求：\n{task_content}"
-    messages = [{"role": "system", "content": system}]
+    messages = [{"role": "system", "content": SYSTEM_PROMPT}]
     messages.extend(history)
     return messages
 
 
-async def stream_chat(task_content: str, history: list[dict]):
+async def stream_chat(history: list[dict]):
     """Stream chat completion from the LLM. Yields content chunks."""
-    messages = build_messages(task_content, history)
+    messages = build_messages(history)
     async with AsyncOpenAI(
         api_key=settings.LLM_API_KEY,
         base_url=settings.LLM_BASE_URL,