export type OrphanPreserveReason = 'too-young' | 'non-rebuildable-content' | 'scan-failed' | 'scan-budget-exhausted';
export type OrphanVerdict = {
    remove: true;
} | {
    remove: false;
    because: OrphanPreserveReason;
    detail?: string;
};
export declare const ORPHAN_SCAN_MAX_DEPTH = 8;
export declare const ORPHAN_SCAN_MAX_ENTRIES = 4000;
export declare function classifyOrphanDir(orphanPath: string, orphanAgeMs: number, minAgeMs: number, limits?: {
    maxDepth?: number;
    maxEntries?: number;
}): Promise<OrphanVerdict>;