Spotify: pokaż licznik widocznych utworów

// Show a live count of rows currently rendered in the track list
function updateCount() {
  const rows = document.querySelectorAll('div[data-testid="tracklist-row"]');
  let badge = document.getElementById('jz-spo-count');
  if (!rows.length) { if (badge) badge.remove(); return; }
  if (!badge) {
    badge = document.createElement('div');
    badge.id = 'jz-spo-count';
    badge.style.cssText = 'position:fixed;bottom:96px;right:16px;z-index:9999;' +
      'background:#1ed760;color:#000;font:600 12px sans-serif;' +
      'padding:4px 10px;border-radius:12px;pointer-events:none';
    document.body.appendChild(badge);
  }
  badge.textContent = rows.length + ' rows';
}
updateCount();
const obs = new MutationObserver(updateCount);
obs.observe(document.documentElement, { childList: true, subtree: true });