feat(settings): cross-tab fuzzy search + tab restructure polish (#263)

Cross-tab settings search:
- Static SETTINGS_INDEX covering every sub-section of every tab, with
  free-form keywords per entry so "scrobble" finds Last.fm, "replay gain"
  finds Playback, etc.
- matchScore() does substring-first ranking, falls back to a char-in-order
  fuzzy match so typos still yield hits.
- Active tab keeps its in-place hide/show filter; matches from other tabs
  render at the top as a clickable "In other tabs" list (tab badge +
  sub-section title). Clicking clears the query, switches tab, and scrolls
  + opens the target sub-section.
- All 8 locales updated: new searchOtherTabs key, searchNoResults reworded
  (old "try another tab" hint is now handled by the list itself).

Settings restructure polish:
- "Next Track Buffering" moved from Audio to the Storage tab — sits
  between Offline Library and Downloads.
- Storage tab label renamed across 8 locales: "Storage & Downloads" →
  "Offline & Cache" (equivalents per locale). nb locale was missing
  tabStorage entirely; added. Tab id stays 'storage' to avoid breaking
  persisted state.
- Library tab: Random Mix sub-section now opens by default (previously
  both sub-sections started collapsed) and is renamed "Random Mix
  Blacklist" in all 8 locales — the section is entirely a blacklist
  config, the old title was misleading.
- Lyrics tab:
  * Standard / YouLyPlus rows use the same toggle style as the "Show
    lyrics as static text" row and stack vertically. Order swapped so
    YouLyPlus is first.
  * Provider list (Server / LRCLIB / Netease) moved to appear directly
    under the Standard toggle as its sub-item, indented, instead of after
    the static-text toggle.
  * Classic / Apple Music-like rows likewise rebuilt as vertical toggle
    rows.
- One pre-existing typo carried in from #261 fixed along the way: the
  openAddServerInvite handler in Settings referenced the renamed tab id
  'server' (pre-#259) — now 'servers'. [Note: already landed in PR #262,
  keeping this commit clean of that.]

Co-authored-by: Psychotoxical <dev@psysonic.app>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/locales/nb.ts

@@ -674,7 +674,7 @@ export const nbTranslation = {
     aboutContributorsLabel: 'Bidragsytere',
     showChangelogOnUpdate: "Vis 'Hva er nytt' ved oppdatering til ny versjon",
     showChangelogOnUpdateDesc: "Viser et diskret changelog-banner over Now Playing etter en oppdatering. Klikk åpner versjonsnotatene; X skjuler det.",
-    randomMixTitle: 'Tilfeldig miks',
+    randomMixTitle: 'Svarteliste for tilfeldig miks',
     randomMixBlacklistTitle: 'Egendefinerte filternøkkelord',
     randomMixBlacklistDesc: 'Sanger ekskluderes når et nøkkelord samsvarer med sjanger, tittel, album eller artist (aktiv når avkrysningsboksen ovenfor er på).',
     randomMixBlacklistPlaceholder: 'Legg til nøkkelord…',
@@ -688,11 +688,13 @@ export const nbTranslation = {
     tabPersonalisation: 'Personalisering',
     tabIntegrations: 'Integrasjoner',
     tabAppearance: 'Utseende',
+    tabStorage: 'Frakoblet & Cache',
     inputKeybindingsTitle: 'Tastatursnarveier',
     aboutContributorsCount_one: '{{count}} bidrag',
     aboutContributorsCount_other: '{{count}} bidrag',
     searchPlaceholder: 'Søk i innstillinger…',
-    searchNoResults: 'Ingen treff i denne fanen. Prøv en annen fane.',
+    searchNoResults: 'Ingen innstillinger samsvarer med søket ditt.',
+    searchOtherTabs: 'I andre faner',
     aboutMaintainersLabel: 'Ansvarlige',
     integrationsPrivacyTitle: 'Personvern-merknad',
     integrationsPrivacyBody: 'Alle integrasjoner på denne fanen er <strong>frivillige</strong> og sender, når aktivert, data til eksterne tjenester eller til Navidrome-serveren din. Last.fm mottar lyttehistorikken din, Discord viser gjeldende spor i profilen din, Bandsintown spørres per artist for turnédatoer, og "Spilles nå"-delingen publiserer gjeldende spor til andre brukere av Navidrome-serveren din. Hvis du ikke ønsker noe av dette, la den aktuelle seksjonen stå deaktivert.',