fix: bottom bar no touch seek; lyrics seek on Android; smoother NP animation

- initProgressScrub: pass noTouch=true for the bottom mini-bar so touch
  events are never registered on it; only mouse events remain (desktop-only).
  The now-playing scrubber is unchanged and keeps full touch support.
- Export seekToMs(ms) from player.js; use it in the lyrics click handler
  instead of S.audio.currentTime which has no effect when HAS_BRIDGE
  (native ExoPlayer handles playback, not the HTML audio element).
- styles.css: add will-change:transform to .player and .np-overlay to keep
  them on GPU compositor layers during the swipe gesture; tweak NP open
  transition to cubic-bezier(.4,0,.2,1) for a snappier feel.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/nowplaying.js

@@ -2,7 +2,7 @@ import { S } from './state.js';
 import { esc } from './utils.js';
 import { coverUrl } from './api.js';
 // Circular imports — safe (only used inside function bodies)
-import { playCurrent, _syncNpDirect, dlSongLocal, npToggleStar, _syncOverlayState, isPlaying } from './player.js';
+import { playCurrent, _syncNpDirect, dlSongLocal, npToggleStar, _syncOverlayState, isPlaying, seekToMs } from './player.js';
 import { navigate } from './views.js';
 import { openPlModal, showSongInfo } from './ui.js';
 
@@ -116,7 +116,7 @@ function _renderSyncedLines(content, lines) {
     const el = document.createElement('div');
     el.className = 'lyrics-line';
     el.textContent = line.value;
-    el.onclick = () => { S.audio.currentTime = line.start / 1000; };
+    el.onclick = () => { seekToMs(line.start); };
     content.appendChild(el);
     return { start: line.start, el };
   });