/**
 * Forgen v1 — Legacy Detector
 *
 * ~/.compound/ 5D profile 감지, backup, cutover 분기.
 * Authoritative spec:
 *   docs/plans/2026-04-03-forgen-lifecycle-design.md §12
 *   docs/plans/2026-04-03-forgen-data-model-storage-spec.md §11
 *
 * cutover 순서:
 * 1. ~/.compound/me/forge-profile.json 존재 여부 확인
 * 2. 5D schema인지 검사
 * 3. legacy면 backup (forge-profile.legacy-<ts>.json)
 * 4. 새 profile은 ~/.forgen/me/forge-profile.json에 생성 → fresh onboarding
 */
export interface LegacyCheckResult {
    found: boolean;
    isLegacy: boolean;
    backupPath: string | null;
}
/**
 * ~/.compound/me/forge-profile.json이 5D legacy인지 확인.
 */
export declare function checkLegacyProfile(): LegacyCheckResult;
/**
 * legacy profile을 backup.
 * ~/.compound/me/forge-profile.legacy-<timestamp>.json으로 복사.
 */
export declare function backupLegacyProfile(): string | null;
/**
 * legacy cutover 전체 실행.
 * 반환: backup 경로 (legacy가 아니면 null)
 */
export declare function runLegacyCutover(): string | null;