/**
 * GAP-RUN-002: Run Archival and Restore.
 *
 * Provides primitives for archiving completed runs to compressed files,
 * restoring them, and managing archive manifests.
 */
export interface ArchiveManifest {
    /** Run ID of the archived run. */
    runId: string;
    /** ISO timestamp when the archive was created. */
    archivedAt: string;
    /** Original run directory path. */
    originalDir: string;
    /** Path to the archive file. */
    archivePath: string;
    /** Size of the compressed archive in bytes. */
    compressedSize: number;
}
/**
 * Archive a run directory by creating a compressed .json.gz file and a manifest.
 * Collects all JSON files in the run directory recursively into a single archive.
 */
export declare function archiveRun(runDir: string, archiveDir: string): Promise<ArchiveManifest>;
/**
 * Restore an archive to a target directory.
 */
export declare function restoreRun(archivePath: string, targetDir: string): Promise<void>;
/**
 * List all archives in a directory by reading manifest files.
 */
export declare function listArchives(archiveDir: string): Promise<ArchiveManifest[]>;
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