export declare const RELEASE_MANIFEST_URLS: {
    readonly latest: "https://msclaude.ai/files/agent/latest.json";
    readonly beta: "https://msclaude.ai/files/agent/beta.json";
};
export type ReleaseChannel = keyof typeof RELEASE_MANIFEST_URLS;
export interface EmergencyReleaseManifest {
    schemaVersion: 1;
    package: '@agent-link/agent';
    version: string;
    channel: ReleaseChannel;
    url: string;
    integrity: string;
    shasum: string;
    size: number;
}
export interface PreparedEmergencyUpgrade {
    manifest: EmergencyReleaseManifest;
    packagePath: string;
    cleanup: () => void;
}
export declare function validateEmergencyManifest(value: unknown, expectedChannel?: ReleaseChannel): EmergencyReleaseManifest;
export declare function fetchEmergencyManifest(channel?: ReleaseChannel, fetchImpl?: typeof fetch): Promise<EmergencyReleaseManifest>;
export declare function verifyEmergencyArtifact(artifact: Buffer, manifest: EmergencyReleaseManifest): void;
export declare function prepareEmergencyUpgrade(manifest: EmergencyReleaseManifest, fetchImpl?: typeof fetch): Promise<PreparedEmergencyUpgrade>;