import type { AppServices } from "../bootstrap/composition-root.js";
/**
 * Startup update notice for the v2 shell. Shows a single toast when a newer
 * release exists, honoring the 4h check interval and offline/disabled flags so
 * it never spams on every launch. `isCancelled` lets the caller skip surfacing
 * the toast if the shell is already tearing down.
 */
export declare function maybeShowUpdateToast(services: AppServices, isCancelled?: () => boolean): Promise<void>;