/**
 * Auto-updater for Genspark Tool CLI
 *
 * Checks npm registry for newer versions and auto-updates.
 * Controlled by:
 *   - GSK_NO_AUTO_UPDATE=1 env var to disable
 *   - "auto_update": false in config file
 *   - Disabled inside Genspark sandboxes (/opt/genspark marker, see runtime.ts)
 *   - Checks at most once every 4 hours (cached in ~/.genspark-tool-cli/update-meta.json)
 */
export declare const CHECK_INTERVAL_MS: number;
/**
 * Shared update bookkeeping for both the npm self-update (last_check /
 * latest_version) and the native gsk-mesh binary (last_mesh_check /
 * latest_mesh_version, written by src/mesh/upgrade.ts). One file, independent
 * throttles — so the mesh autorun check piggybacks on this 4h cadence instead
 * of running its own separate timer.
 */
export interface UpdateMeta {
    last_check?: string;
    latest_version?: string;
    last_mesh_check?: string;
    latest_mesh_version?: string;
}
export declare function loadUpdateMeta(): UpdateMeta | null;
/**
 * Merge-preserving write: callers pass only the keys they own (npm side vs
 * mesh side), and untouched keys on disk are preserved. A plain overwrite
 * would let the npm check clobber the mesh fields and vice-versa.
 */
export declare function saveUpdateMeta(patch: Partial<UpdateMeta>): void;
/**
 * Check for updates and auto-install if a newer version is available.
 * Safe to call — failures never block CLI execution.
 */
export declare function checkForUpdates(currentVersion: string): Promise<void>;
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