const observer = new MutationObserver((mutations) => {
  for (const mutation of mutations) {
    mutationLog.push({
      type: mutation.type,
      target: mutation.target.id || mutation.target.nodeName.toLowerCase(),
      addedNodes: mutation.addedNodes.length,
      attributeName: mutation.attributeName,
      oldValue: mutation.oldValue
    });
  }

  renderMutationLog();

  if (feed.dataset.state === "ready") {
    observer.disconnect();
  }
});