/**
 * 增强型 JSON 记忆存储适配器
 *
 * 作为 FileMemoryStore 的增强版，支持多文件分片
 * 适用于大规模记忆数据场景
 *
 * 存储结构：
 * .specpow/memory/
 *   ├── index.json          # 主索引（元数据）
 *   ├── shards/             # 分片目录
 *   │   ├── shard-001.json  # 分片文件
 *   │   ├── shard-002.json
 *   │   └── ...
 *   ├── sessions/           # 会话日志
 *   └── archives/           # 归档记忆
 */
import type { MemoryIndex, MemoryStore, SessionLog } from '../memory-types.js';
export interface ShardedJsonStoreOptions {
    /** 每个分片的最大条目数，默认 1000 */
    maxEntriesPerShard?: number;
    /** 项目根目录 */
    projectRoot: string;
}
export declare class ShardedJsonStore implements MemoryStore {
    private memoryDir;
    private shardsDir;
    private sessionsDir;
    private archivesDir;
    private indexPath;
    private maxEntriesPerShard;
    constructor(options: ShardedJsonStoreOptions);
    private ensureDirs;
    load(): Promise<MemoryIndex>;
    save(index: MemoryIndex): Promise<void>;
    private extractShardIndex;
    clear(): Promise<void>;
    saveSessionLog(sessionId: string, log: SessionLog): Promise<void>;
    loadSessionLog(sessionId: string): Promise<SessionLog | null>;
    listSessionIds(): Promise<string[]>;
    /**
     * 获取分片统计信息
     */
    getShardStats(): {
        totalShards: number;
        totalEntries: number;
        shardSizes: number[];
    };
    private getShardFiles;
}
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