/**
 * Background status poller for the Phaibel shell.
 *
 * Polls service status and queue size on a timer
 * and updates the StatusBar data.
 */
import type { StatusBar } from './tui.js';
export declare class StatusPoller {
    private timer;
    private bar;
    constructor(bar: StatusBar);
    /**
     * Start polling. Runs an initial poll immediately.
     */
    start(): void;
    /**
     * Stop polling.
     */
    stop(): void;
    /**
     * Run a single poll cycle.  Called automatically by the timer,
     * but can also be called externally after a command that may
     * change service/queue state (e.g. `service start`).
     */
    pollNow(): Promise<void>;
}
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