/**
 * Staleness Detector — 存量知识过时检测
 *
 * 逻辑：
 * 1. 查找 updated_at 距今超过 N 天的 active 条目
 * 2. 分批用 LLM 判断内容是否仍然准确/相关
 * 3. 过时条目标记为低置信度（confidence 降低）
 * 4. 写入 quality_gate_log 审计轨迹
 */
export interface StalenessOptions {
    batchSize?: number;
    maxAgeDays?: number;
    dryRun?: boolean;
    json?: boolean;
    domain?: string;
}
export interface StalenessResult {
    entryId: string;
    title: string;
    type: string;
    updatedAt: string;
    ageDays: number;
    isStale: boolean;
    reasoning: string;
}
export interface StalenessReport {
    runAt: string;
    totalCandidates: number;
    assessed: number;
    staleCount: number;
    flaggedCount: number;
    dryRun: boolean;
    maxAgeDays: number;
    results: StalenessResult[];
}
export declare function runStalenessCheck(options?: StalenessOptions): Promise<StalenessReport>;
export declare function formatStalenessReport(report: StalenessReport): string;
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