import type { BackupMeta } from "./types.js";
/** Create a snapshot of the workspace. Returns the backup directory path. */
export declare function createBackup(workspace: string, sourceVersion: string, targetVersion: string, chain: string[]): string;
export interface BackupEntry {
    id: string;
    path: string;
    meta: BackupMeta;
}
export declare function listBackups(): BackupEntry[];
/** Restore a workspace from a backup directory (overwrites target). */
export declare function restoreBackup(backupDir: string, targetWorkspace: string): void;
export declare function deleteBackup(id: string): boolean;
export declare function getBackupRoot(): string;