/**
 * File-backed pairing storage — persists paired devices under the dreb agent
 * dir so pairings survive dashboard restarts. Written with mode 0600.
 */
import { type PairingState } from "./auth.js";
/**
 * Load or create the per-install dashboard auth secret. This secret keys both
 * device-token HMACs and the rotating pairing code, so it must survive process
 * restarts but must never be shared across installs/servers.
 */
export declare function loadOrCreateDashboardSecret(path: string): Buffer;
export declare class FilePairingStorage {
    private readonly path;
    constructor(path: string);
    load(): Promise<PairingState>;
    save(state: PairingState): Promise<void>;
}
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