/**
 * Attaches a click listener to the iframe document that intercepts links the sandbox
 * would block — non-HTML downloads (PDFs, archives, media), explicit `download` links,
 * cross-origin navigations, and anchors targeting `_blank`/`_top`/`_parent` — and opens
 * them in a new top-level tab via the un-sandboxed parent shell. Same-origin HTML links
 * without a blocked target flow through unchanged so the previewed site remains
 * navigable inside the iframe. Idempotent per Document.
 *
 * Runs in the capture phase and intercepts unconditionally for matched links, so SPA
 * routers that preventDefault on all anchor clicks (for client-side navigation) do not
 * silence this handler.
 * @param {HTMLIFrameElement} iframe The iframe element.
 */
export declare function attachLinkInterceptor(iframe: HTMLIFrameElement): void;