delete-workflow-runs.js

(function () {
  document
    .querySelectorAll(".btn-link.timeline-comment-action")
    .forEach((item) => item.click());
  document.querySelectorAll("summary").forEach((item) => {
    if (item.innerHTML.indexOf("Delete workflow run") > -1) {
      item.click();
    }
  });

  setTimeout(() => {
    document.querySelectorAll("button").forEach((item) => {
      if (
        item.innerHTML.indexOf("Yes, permanently delete this workflow run") > -1
      ) {
        item.click();
      }
    });
  }, 1200);
})();