fix(statistics): accurate counts for large libraries + album-artist tooltip

Remove the 10-page cap in fetchStatisticsLibraryAggregates — the loop now runs until
the server returns a partial page, so albums/songs/playtime reflect the full library
regardless of size (previously capped at 5,000 albums). Switched sort type from
'newest' to 'alphabeticalByName' for a stable pagination order.

Add a tooltip on the Artists stat card explaining it shows album artists only (Subsonic
API limitation — track-level featured/guest artists without their own album are not
included). Tooltip added in all 8 locales. Labels with a tooltip get a dotted underline
and cursor:help as visual hint.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/locales/de.ts

@@ -785,6 +785,7 @@ export const deTranslation = {
     genreDistribution: 'Genre-Verteilung (Top 20)',
     loadMore: 'Mehr laden',
     statArtists: 'Künstler',
+    statArtistsTooltip: 'Nur Album-Künstler — Künstler, die ausschließlich als Track-Künstler vorkommen (Featured, Gast usw.) und kein eigenes Album haben, werden nicht gezählt.',
     statAlbums: 'Alben',
     statSongs: 'Songs',
     statGenres: 'Genres',

src/locales/en.ts

@@ -787,6 +787,7 @@ export const enTranslation = {
     genreDistribution: 'Genre Distribution (Top 20)',
     loadMore: 'Load more',
     statArtists: 'Artists',
+    statArtistsTooltip: 'Album artists only — artists appearing only as a track-level artist (featured, guest, etc.) without their own album are not included.',
     statAlbums: 'Albums',
     statSongs: 'Songs',
     statGenres: 'Genres',

src/locales/es.ts

@@ -774,6 +774,7 @@ export const esTranslation = {
     genreDistribution: 'Distribución de Géneros (Top 20)',
     loadMore: 'Cargar más',
     statArtists: 'Artistas',
+    statArtistsTooltip: 'Solo artistas de álbum — los artistas que aparecen únicamente como artistas de pista (featuring, invitado, etc.) sin álbum propio no se cuentan.',
     statAlbums: 'Álbumes',
     statSongs: 'Canciones',
     statGenres: 'Géneros',

src/locales/fr.ts

@@ -783,6 +783,7 @@ export const frTranslation = {
     genreDistribution: 'Répartition par genre (Top 20)',
     loadMore: 'Charger plus',
     statArtists: 'Artistes',
+    statArtistsTooltip: 'Artistes d\'album uniquement — les artistes apparaissant seulement sur des pistes (featuring, invité, etc.) sans album propre ne sont pas comptés.',
     statAlbums: 'Albums',
     statSongs: 'Morceaux',
     statGenres: 'Genres',

src/locales/nb.ts

@@ -782,6 +782,7 @@ export const nbTranslation = {
     genreDistribution: 'Sjangerfordeling (Topp 20)',
     loadMore: 'Last inn mer',
     statArtists: 'Artister',
+    statArtistsTooltip: 'Kun albumartister — artister som bare opptrer som sporartist (featuring, gjest, osv.) uten eget album telles ikke med.',
     statAlbums: 'Album',
     statSongs: 'Sanger',
     statGenres: 'Sjangere',

src/locales/nl.ts

@@ -783,6 +783,7 @@ export const nlTranslation = {
     genreDistribution: 'Genreverdeling (Top 20)',
     loadMore: 'Meer laden',
     statArtists: 'Artiesten',
+    statArtistsTooltip: 'Alleen albumartiesten — artiesten die enkel als trackartiest voorkomen (featuring, gast, enz.) zonder eigen album worden niet meegeteld.',
     statAlbums: 'Albums',
     statSongs: 'Nummers',
     statGenres: 'Genres',

src/locales/ru.ts

@@ -834,6 +834,7 @@ export const ruTranslation = {
     genreDistribution: 'Жанры (топ-20)',
     loadMore: 'Ещё',
     statArtists: 'Исполнители',
+    statArtistsTooltip: 'Только исполнители альбомов — артисты, присутствующие лишь в треках (фичеринг, гость и т. д.) без собственного альбома, не учитываются.',
     statAlbums: 'Альбомы',
     statSongs: 'Треки',
     statGenres: 'Жанры',

src/locales/zh.ts

@@ -779,6 +779,7 @@ export const zhTranslation = {
     genreDistribution: '流派分布（前 20）',
     loadMore: '加载更多',
     statArtists: '艺术家',
+    statArtistsTooltip: '仅限专辑艺术家——仅作为单曲艺术家出现（合唱、客串等）且无自己专辑的艺术家不计入此处。',
     statAlbums: '专辑',
     statSongs: '歌曲',
     statGenres: '流派',