export interface VerifyMaps {
    signatures: Map<string, string> | null;
    checksums: Map<string, string> | null;
}
/**
 * Download and parse signature.bin + checksums.txt from the release.
 * Returns null maps when the corresponding skip flag is set.
 */
export declare function loadVerifyMaps(releaseBaseUrl: string, fetchImpl: typeof fetch | undefined, skipSignature: boolean, skipChecksum: boolean): Promise<VerifyMaps>;
/**
 * Verify a single archive file against the signature and checksum maps.
 * Throws an Error with a human-readable message on failure.
 */
export declare function verifyArchive(archivePath: string, archiveName: string, maps: VerifyMaps, publicKeyHex: string): Promise<void>;
/**
 * Verify the binary archive. On failure, prints an error, deletes the
 * archive, and returns false. On success, prints confirmation and returns true.
 */
export declare function verifyBinaryArchive(archivePath: string, archiveName: string, maps: VerifyMaps, publicKeyHex: string): Promise<boolean>;
/**
 * Verify the model archive. On failure, prints an error, deletes the
 * archive, and returns false. On success, prints confirmation and returns true.
 */
export declare function verifyModelArchive(archivePath: string, maps: VerifyMaps, publicKeyHex: string): Promise<boolean>;
/**
 * Check if the embedding model files already exist in the model directory.
 * Used to skip the ~154MB model download on reinstalls.
 */
export declare function modelFilesExist(dir: string): boolean;