/**
 * Delete the OpenCode plugin cache entry for zenox so that OC re-downloads
 * the latest version on next startup.
 *
 * Prefers deleting zenox@latest (unpinned). Also deletes any versioned entries
 * so a pinned-then-unpinned user doesn't get served a stale version.
 *
 * Returns true if at least one entry was removed.
 */
export declare function invalidatePackageCache(): Promise<boolean>;