feat(library): render from locally-cached data when offline
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The Library showed a blocking error with the backend unreachable. Now it
composes a read-only library from everything already in the RTK Query
cache (Tier-2 rehydrated last-seen data + anything fetched this session),
so it keeps rendering offline instead of erroring.

- selectors: `selectLocalTracks/Albums/Artists` — memoized, union + dedupe
  across getTracks/getAlbums/getArtists, the per-album/artist list
  endpoints, and single-entity fetches; skips pending/rejected entries
- LibraryPage: when offline, fall back to the composed lists (live data
  still wins online), filter client-side for search, show an offline
  banner, and never show the retry-only ErrorState
- i18n: `library.offline.*` (en + ru)
- test: selector composition / dedup / status filtering (3 cases)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Senko-san
2026-06-14 01:44:45 +03:00
parent 4aa071eeeb
commit 8a0e6782ad
5 changed files with 325 additions and 60 deletions
+7
View File
@@ -99,6 +99,13 @@ const ru: Translations = {
artistRow: {
meta: '{{albumCount}} альб. · {{trackCount}} треков',
},
offline: {
banner:
'Нет связи с сервером — показана локально доступная библиотека. Она может быть неполной и доступна только для чтения, пока сервер недоступен.',
emptyTitle: 'Офлайн ничего нет',
emptyDesc:
'На этом устройстве ещё нет кэша библиотеки. Подключитесь к серверу хотя бы раз, чтобы просматривать офлайн.',
},
},
album: {
type: 'Альбом',