/**
 * Backup/restore system — create safety snapshots before risky operations.
 */
export interface OperationRecord {
    id: string;
    timestamp: string;
    operation: string;
    branch: string;
    backupBranch: string;
    headBefore: string;
    stackId: string;
    details: string;
}
/**
 * Create a backup branch of the current HEAD before a risky operation.
 * Returns the backup branch name.
 */
export declare function createBackup(operation: string, stackId: string, cwd?: string): Promise<string>;
/**
 * Restore from a backup branch — reset current branch to the backup point.
 */
export declare function restoreBackup(backupBranch: string, cwd?: string): Promise<void>;
/**
 * Get operation history, newest first.
 */
export declare function getHistory(): Promise<OperationRecord[]>;
/**
 * Get the last N operations.
 */
export declare function getRecentHistory(count?: number): Promise<OperationRecord[]>;
/**
 * Clean up old backup branches (older than 7 days).
 */
export declare function cleanupBackups(cwd?: string): Promise<number>;
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