Function start_with_auth_until_shutdown 

pub async fn start_with_auth_until_shutdown(
    listen_addr: &str,
    router: Arc<RequestRouter>,
    push_broadcaster: Arc<GrpcPushBroadcaster>,
    key_store: Arc<KeyStore>,
    counters: Arc<RuntimeCounters>,
    shutdown_rx: Receiver<bool>,
) -> Result<(), Box<dyn Error>>

启动 gRPC 服务（带 KeyStore 鉴权 + 共享限额 counters），并支持 daemon 统一 shutdown 信号。