Function spawn_ws_session 

pub async fn spawn_ws_session(
    cfg: SharedConfig,
    stop: Arc<AtomicBool>,
    logs: Arc<Mutex<Vec<LogEntry>>>,
    busy: Arc<AtomicBool>,
    paused: Arc<AtomicBool>,
    observers: WorkerObservers,
    schedule: SessionSchedule,
) -> Result<()>

Top-level driver: connect, run a session, reconnect on disconnect, give up after cfg.ws_reconnect_attempts failures.

paused is a runtime-only flag (not persisted to Config). When true, the heartbeat reports autoEnabled = false and incoming offers are rejected, so the studio stops sending new jobs. In- flight work is allowed to finish.