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/config/settingsCredits.ts

@@ -169,6 +169,7 @@ const CONTRIBUTOR_ENTRIES = [
       'Community themes — redesign pass: removed 5 overlapping / eye-straining palettes, added 8 new dark themes (Obsidian Black, Carbon Grey, Volcanic Dark, Forest Green, Violet Haze, Copper Oxide, Sakura Night, Obsidian Gold) (PR #490)',
       'Customizable queue toolbar — drag-and-drop button reordering, per-button visibility toggles, optional separator, persisted across restarts (PR #534)',
       'Playlist page layout — per-element visibility toggles (Add Songs, Import CSV, Download ZIP, Cache Offline, Suggestions) under Settings → Personalisation (PR #556)',
+      'Player bar layout — per-control visibility toggles (Star rating, Favorite, Last.fm love, Equalizer, Mini player) under Settings → Personalisation (PR #627)',
     ],
   },
   {