export interface FrontmatterMigrationCandidate {
    relPath: string;
    fromVersion: number;
}
export type FrontmatterMigrator = (raw: string) => string;
export declare const FRONTMATTER_MIGRATORS: ReadonlyMap<number, FrontmatterMigrator>;
export interface FrontmatterMigrationResult {
    raw: string;
    fromVersion: number;
    toVersion: number;
    changed: boolean;
    gap: boolean;
    error?: string;
}
export declare function migrateFrontmatterTo(raw: string, target: number, migrators: ReadonlyMap<number, FrontmatterMigrator>): FrontmatterMigrationResult;
export declare function migrateFrontmatterToCurrent(raw: string): FrontmatterMigrationResult;
export interface FrontmatterContractIssue {
    relPath: string;
    missing: string[];
}
export interface FrontmatterContractScan {
    scanned: number;
    invalid: FrontmatterContractIssue[];
    targetVersion: number;
    behind: FrontmatterMigrationCandidate[];
}
export declare function scanFrontmatterContract(vaultPath: string, targetVersion?: number): FrontmatterContractScan;
export interface UnindexedScan {
    unindexed: string[];
    onDisk: number;
    indexPresent: boolean;
}
export declare function scanUnindexedFigments(vaultPath: string): Promise<UnindexedScan>;
export interface ReconcileScan {
    vaultName: string;
    vaultPath: string;
    scanned: number;
    missingFrontmatter: FrontmatterContractIssue[];
    unindexed: string[];
    indexPresent: boolean;
    targetVersion: number;
    behind: FrontmatterMigrationCandidate[];
    pendingRemovals: string[];
    inventoryDigest: string;
    ignorePolicy: {
        exists: boolean;
        sha256: string;
        byteLength: number;
    };
    excluded: number;
}
export declare function reconcileVaultScan(vaultName: string | undefined): Promise<ReconcileScan>;
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