import type { EvidenceConfig } from '../config/schema';
export type EvidenceType = 'review' | 'test' | 'diff' | 'approval' | 'note';
export interface EvidenceBundle {
    id?: string;
    type: EvidenceType;
    payload: unknown;
    created_at?: string;
}
export interface EvidenceRecord extends EvidenceBundle {
    id: string;
    created_at: string;
    filename: string;
}
export declare class EvidenceStore {
    private readonly directory;
    private readonly config;
    private readonly initPromise;
    private readonly lockBackoffs;
    private evidenceRoot;
    private tmpRoot;
    private pruneInFlight;
    private prunePending;
    private lastPruneEndTime;
    constructor(directory: string, config: EvidenceConfig);
    saveEvidence(bundle: EvidenceBundle): Promise<void>;
    listEvidence(): Promise<EvidenceRecord[]>;
    pruneStaleBundles(): Promise<void>;
    private initialize;
    private normalizeId;
    private withLock;
    private acquireLock;
    private runPruneCycle;
    private executePruneCycle;
    private pruneOnce;
    private scanEvidenceFiles;
    private readRecord;
    private cleanupTmpDirectory;
    private writeWithRetries;
    private safeUnlink;
    private resolveRelativePath;
    private sleep;
}