Bluesky: navigazione timeline con J/K

// Navigate timeline posts with the J and K keys
(function () {
  function posts() {
    return Array.from(document.querySelectorAll(
      '[data-testid="postsFeedItem"], [data-testid^="feedItem-by-"]'
    ));
  }
  let idx = -1;
  function go(step) {
    const list = posts();
    if (!list.length) { return; }
    idx = Math.max(0, Math.min(list.length - 1, idx + step));
    const el = list[idx];
    if (el) {
      el.scrollIntoView({ behavior: 'smooth', block: 'center' });
      el.style.outline = '2px solid #0085ff';
      setTimeout(function () { el.style.outline = ''; }, 800);
    }
  }
  document.addEventListener('keydown', function (e) {
    if (e.target && /^(INPUT|TEXTAREA)$/.test(e.target.tagName)) { return; }
    if (e.target && e.target.isContentEditable) { return; }
    if (e.key === 'j') { go(1); }
    else if (e.key === 'k') { go(-1); }
  });
})();