() => {
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    "http://127.0.0.1:8765",
    "http://localhost:8765"
  ]);
  let parentOrigin;
  try { parentOrigin = new URL(document.referrer).origin; }
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  if (window.parent === window || !allowedParents.has(parentOrigin)) return;

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  window.__pitchinEmbedCleanup?.();
  let root;
  let timer;
  let lastHeight = 0;
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    clearTimeout(timer);
    timer = setTimeout(() => {
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      if (nextRoot !== root) {
        if (root) sizeObserver.unobserve(root);
        root = nextRoot;
        if (root) sizeObserver.observe(root);
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      if (!root) return;
      // Measure content rather than iframe/body height to avoid a resize loop.
      const height = Math.ceil(root.getBoundingClientRect().bottom + window.scrollY + 4);
      if (height <= 0 || height === lastHeight) return;
      lastHeight = height;
      window.parent.postMessage({ type: "pitchin-embed-height", height }, parentOrigin);
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  const sizeObserver = new ResizeObserver(report);
  const contentObserver = new MutationObserver(report);
  contentObserver.observe(document.body, { childList: true, subtree: true });
  window.addEventListener("resize", report);
  document.fonts?.ready.then(report);
  window.__pitchinEmbedCleanup = () => {
    clearTimeout(timer);
    sizeObserver.disconnect();
    contentObserver.disconnect();
    window.removeEventListener("resize", report);
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  report();
}