import type { CustomRouteHandler } from './ui-http-server.js';
export declare const UI_OTA_MANIFEST_PATH = "/api/ui-ota/manifest.json";
export declare const UI_OTA_BUNDLE_PATH = "/api/ui-ota/bundle.zip";
/** Manifest the desktop shell polls to decide whether to download a new frontend. */
export interface UiOtaManifest {
    /** Content-addressed frontend id. Changes iff the SPA content changes. Opaque to the client. */
    version: string;
    /** SHA-256 (hex) of the ZIP bytes — the client verifies the download against this. */
    sha256: string;
    /** ZIP byte length. */
    size: number;
    /** Path to fetch the bundle from (same-origin). */
    url: string;
}
/**
 * Build the OTA custom-route map for the given SPA directory. Returns an empty map (OTA disabled)
 * when the SPA is not built. The bundle is built lazily on first request and cached for the process
 * lifetime.
 */
export declare function createOtaRoutes(spaDir: string | undefined): Record<string, CustomRouteHandler>;