/**
 * Periodic Governance — 知识库定期治理 (FR-N08)
 *
 * 功能：
 * 1. 过时检测：对 fact 类型条目，用 LLM 判断是否仍成立
 * 2. 价值衰减：last_hit_at 超过 N 天（可配置，默认 90）的条目 confidence -= 0.1，低于阈值（可配置，默认 0.3）则标记低价值
 * 3. 矛盾扫描：BGE embedding 余弦预筛（cosine > 0.6）→ LLM 精判，结果进入冲突裁决队列
 * 4. 常识回收：用 LLM 评估条目是否已被模型内化
 * 5. 审计轨迹：写入 quality_gate_log 表
 * 6. 恢复命令：governance restore <id>
 * 7. 报告输出：Top-10 高风险条目
 * 8. 运行摘要持久化：每次 governance run 写入 quality_gate_log（decision='governance_summary'）
 */
export interface PeriodicGovernanceOptions {
    domain?: string;
    dryRun?: boolean;
    json?: boolean;
    decayDays?: number;
    minConfidence?: number;
}
export interface GovernanceAction {
    entryId: string;
    entryTitle: string;
    actionType: 'staleness_flagged' | 'value_decay' | 'value_low' | 'common_reclaimed' | 'contradiction_flagged';
    reason: string;
    previousConfidence: number;
    newConfidence: number;
    previousStatus: string;
    newStatus: string;
}
export interface PeriodicGovernanceReport {
    runAt: string;
    totalScanned: number;
    actions: GovernanceAction[];
    topRiskEntries: Array<{
        id: string;
        title: string;
        confidence: number;
        status: string;
    }>;
    contradictions: Array<{
        entryAId: string;
        entryATitle: string;
        entryBId: string;
        entryBTitle: string;
    }>;
    dryRun: boolean;
}
export declare function runPeriodicGovernance(options?: PeriodicGovernanceOptions): Promise<PeriodicGovernanceReport>;
export declare function runGovernanceRestore(entryId: string): Promise<string>;
export declare function formatPeriodicGovernanceReport(report: PeriodicGovernanceReport): string;
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