export type UserUnderstandingQualityMetrics = {
    windowDays: number;
    since: string;
    records: {
        total: number;
        candidate: number;
        active: number;
        rejected: number;
        needsReview: number;
        stale: number;
        archived: number;
        agingCandidates: number;
        explicit: number;
        inferred: number;
        averageConfidence: number | null;
    };
    decisions: {
        total: number;
        acceptanceRate: number | null;
    };
    recall: {
        total: number;
        helpful: number;
        notHelpful: number;
        mixed: number;
        irrelevant: number;
        helpfulRate: number | null;
    };
};
export declare function summarizeUserUnderstandingQuality(options?: {
    windowDays?: number;
    agingCandidateDays?: number;
    nowMs?: number;
}): UserUnderstandingQualityMetrics;