Easier to dismiss popups: close button and swipe down

Sheets (including Now Playing) get a close button, an animated close and swipe-down on phones; lyrics and the visualizer close on swipe-down too.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

public/lyrics-view.js

@@ -81,7 +81,7 @@ function lyrOpen() {
   const t = cur(); if (!t || lyr.open) return;
   lyr.open = true; document.body.classList.add('lyropen');
   const el = lyr.el = document.createElement('div'); el.id = 'lyr'; el.setAttribute('role', 'dialog'); el.setAttribute('aria-label', 'Lyrics');
-  document.body.appendChild(el); lyrShell(); lyrReload();
+  document.body.appendChild(el); lyrShell(); lyrReload(); swipeToDismiss(el, lyrClose, { handle: '.lyrtop', always: true });
   addEventListener('keydown', lyrKey); lyr.raf = requestAnimationFrame(lyrTick);
 }
 function lyrClose() {