补充样本中心config

backend/app/config.py

@@ -112,9 +112,9 @@ class Settings(BaseSettings):
     compute_node_ssh_timeout: int = 300  # SSH 命令超时（秒）
 
     # --- 样本中心 ---
-    sample_center_base_url: str = ""  # 样本中心 API 地址，如 https://sample.example.com
-    sample_center_app_id: str = ""  # 样本中心应用标识
-    sample_center_app_secret: str = ""  # 样本中心应用密钥
+    sample_center_base_url: str = "http://192.168.92.61"  # 样本中心 API 地址，如 https://sample.example.com
+    sample_center_app_id: str = "WviiGL8KQE20tQhmhQPQhhJ5QpFK51F6"  # 样本中心应用标识
+    sample_center_app_secret: str = "9WXP88hEHJiHRSiUdmx7ip5oQPzY0bnJNsEswQoO4sk6juCplyJTcnAiZsv7e3lJ"  # 样本中心应用密钥
 
     # --- SSO 统一认证 ---
     sso_base_url: str = "http://192.168.92.61:8200"