/**
 * Leaper Agent – Checkpoint Manager
 * Save/restore agent state via shadow git repositories.
 */
import type { ToolDefinition } from './registry.js';
export interface CheckpointInfo {
    hash: string;
    message: string;
    timestamp: string;
    author: string;
}
export interface CheckpointResult {
    success: boolean;
    checkpoint_hash?: string;
    message?: string;
    error?: string;
}
export interface RestoreResult {
    success: boolean;
    restored_files?: number;
    error?: string;
}
export interface DiffResult {
    success: boolean;
    diff?: string;
    error?: string;
}
export declare function shadowRepoPath(dir: string): string;
export declare class CheckpointManager {
    private dir;
    private repoPath;
    private initialized;
    constructor(dir?: string);
    private ensureInit;
    ensureCheckpoint(reason?: string, turnId?: string): Promise<CheckpointResult>;
    listCheckpoints(): Promise<CheckpointInfo[]>;
    restore(hash: string, filePath?: string): Promise<RestoreResult>;
    diff(hash?: string): Promise<DiffResult>;
}
export declare const defaultCheckpointManager: CheckpointManager;
export declare const checkpointTool: ToolDefinition;
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