fix google ai studio user

pragent/backend/agents.py

@@ -18,10 +18,10 @@ def _prepare_extra_body(model_name: str, disable_qwen_thinking: bool) -> Optiona
 async def setup_client(api_key: str, base_url: str) -> AsyncIterator[AsyncOpenAI]:
     """使用异步上下文管理器来创建和妥善销毁API客户端。"""
     client = None
-    if not api_key or "sk-" not in api_key:
-        tqdm.write("[!] 错误: API Key无效或未设置。")
-        yield None
-        return
+    # if not api_key or "sk-" not in api_key:
+    #     tqdm.write("[!] 错误: API Key无效或未设置。")
+    #     yield None
+    #     return
 
     try:
         tqdm.write("[*] 正在初始化API客户端...")