/**
 * Fetch a page using Playwright headless browser.
 *
 * Only called when Playwright is confirmed available via
 * `detectBrowserCapabilities()` — the dynamic import may throw
 * if the package is not installed.
 *
 * @param url - The URL to fetch
 * @param options - Optional settings (selector, timeout)
 * @returns Markdown string or null on failure
 */
export declare function fetchWithPlaywright(url: string, options?: {
    selector?: string;
    timeout?: number;
}): Promise<string | null>;
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