/**
 * `spectral update` — standalone binary self-update.
 *
 * Fetches the latest release manifest from api.aexol.ai, compares versions,
 * downloads the new binary, verifies its SHA256 checksum, and atomically
 * replaces the running binary on disk.
 *
 * Non-standalone install modes (Electron desktop app, npm global) are detected
 * and the user is pointed at the correct update path instead.
 */
/**
 * Run the `spectral update` subcommand.
 *
 * @param args remaining CLI args after the `update` subcommand
 */
export declare function runUpdate(args: string[]): Promise<void>;
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