/**
 * Resolve the Vercel Deployment Protection header for one trusted deployment
 * target. The secret is never returned or logged, and arbitrary A2A targets do
 * not receive it just because this deployment has the credential configured.
 */
export declare function resolveVercelDeploymentProtectionHeaders(targetUrl: string): Record<string, string>;
export declare function isFusionPreviewRuntime(): boolean;
export declare function isHostedWorkspaceRuntime(): boolean;