feat(settings): player bar layout — per-control visibility toggles (#627) (#721)

Adds a new sub-section under Settings → Personalisation (Advanced) that
hides individual controls in the player bar: Star rating, Favorite
(heart), Last.fm love, Equalizer, Mini player. Last.fm love still only
renders when a Last.fm session exists; the overflow row in the player
collapses when both Equalizer and Mini player are hidden.

- New `playerBarLayoutStore` (Zustand + persist, items[{id, visible}] +
  rehydrate sanitize) following the queueToolbar / playlistLayout
  pattern; defaults to all visible.
- New `PlayerBarLayoutCustomizer` reuses the same row + toggle pattern
  as the other personalisation customisers.
- Gates threaded through `PlayerTrackInfo` (3 controls), `PlayerBar`
  (EQ + Mini buttons), and `PlayerOverflowMenu` (EQ + Mini in the
  overflow row, with row-level conditional).
- `PersonalisationTab`: added as the last advanced sub-section so it
  only appears when the global Advanced Mode toggle is on.
- Settings search index gets entries for both Playlist page layout and
  Player bar (playlist row was missing).
- New i18n keys `settings.playerBar*` in all 9 locales.

Reuses kveld9's design from PR #627; not merged because the locale
split and the Advanced Mode refactor landed afterwards. Credited via
Co-Authored-By trailer + a new line in settingsCredits.ts under the
existing kveld9 entry.

Co-authored-by: Kveld. <kveld912@proton.me>

src/locales/ru/settings.ts

@@ -287,6 +287,13 @@ export const settings = {
   playlistLayoutTitle: 'Макет страницы плейлиста',
   playlistLayoutDesc: 'Показать или скрыть отдельные элементы на странице плейлиста.',
   playlistLayoutReset: 'Сбросить',
+  playerBarTitle: 'Панель плеера',
+  playerBarReset: 'Сбросить',
+  playerBarStarRating: 'Оценка звёздами',
+  playerBarFavorite: 'Избранное (сердечко)',
+  playerBarLastfmLove: 'Last.fm love',
+  playerBarEqualizer: 'Эквалайзер',
+  playerBarMiniPlayer: 'Мини-плеер',
   advancedMode: 'Дополнительно',
   advancedModeTooltip: 'Показывать расширенные параметры во всех вкладках настроек. Вклады сообщества, которые не обязательно соответствуют дизайн-философии мейнтейнеров Psysonic.',
   advancedBadge: 'Дополнительно',