feat(queue): unified persistent queue list with playing indicator

Show all queue entries (played and upcoming) in one list instead of
splitting into a "Now playing" card + "Next up" tail, so previously
played tracks don't disappear and reappear when navigating back/forward.
The current track is outlined and shows a reusable "hopping bars"
PlayingIndicator (modern-sk style equalizer animation) for future reuse
across track lists.

src/i18n/locales/ru.ts

@@ -140,9 +140,7 @@ const ru: Translations = {
     close: 'Закрыть',
     from: 'Из: {{source}}',
     radio: 'Радио · {{source}}',
-    nowPlaying: 'Сейчас играет',
     nextUp: 'Далее',
-    nothingNext: 'Очередь пуста',
     empty: 'Очередь пуста',
     radioActive: 'Радио активно',
     mixing: '∞ микс',