/**
 * Poll an HTTP endpoint until it returns 2xx or the deadline passes.
 * Returns true once the endpoint answers OK, false on timeout.
 */
export declare function waitForHttp(url: string, opts?: {
    timeoutMs?: number;
    intervalMs?: number;
}): Promise<boolean>;
/**
 * Open a URL in the user's default browser. Fire-and-forget — if the
 * OS helper fails, the caller can still print the URL so the user
 * can click or copy.
 */
export declare function openBrowser(url: string): Promise<boolean>;
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