import { checkForUpdate, type UpdateInfo } from '../services/update-check.js';
/** Records a notice for the next tool result, unless it has already been said. */
export declare function armUpdateNotice(info: UpdateInfo | null): void;
/**
 * The notice, if one is waiting -- and never again after that.
 *
 * Called on the tool result path, so it must stay synchronous and cheap.
 */
export declare function takeUpdateNotice(): string | null;
/**
 * The sentence to fold into the server's `instructions`, or null.
 *
 * Marks the notice as said: the trailer will not repeat it later in the session.
 */
export declare function initUpdateNotice(current?: string): string | null;
/**
 * Checks the registry in the background and arms the trailer.
 *
 * Call after `server.connect()`: nothing here may sit on the handshake or on a
 * tool response. A failure is not worth reporting -- an unknown version is the
 * same as no notice.
 */
export declare function startUpdateWatch(check?: typeof checkForUpdate, current?: string): Promise<void>;
/** Tests only: the module-level state is per process by design. */
export declare function resetUpdateNotice(): void;