class ConfigService:
    # 配置服务为后续接 system_config 表预留统一入口。
    def get_config(self, config_key: str) -> dict:
        return {"config_key": config_key, "config_value": "delivered"}

    def update_config(self, config_key: str) -> dict:
        return {"config_key": config_key, "updated": True}


config_service = ConfigService()