feat(artist): sort albums by year on artist detail (#877)

* feat(artist): year sort for albums section on artist detail

Add a sort dropdown next to "Albums by …" with release-type grouping (default),
newest-first, and oldest-first by album year.

* chore: note PR #877 in CHANGELOG and settings credits

* fix(artist): toggle year sort inside release groups, session per server

Replace dropdown with a click-to-toggle newest/oldest button. Keep release-type
blocks; sort albums by year within each group. Persist order in session store.

src/locales/en/artistDetail.ts

@@ -11,6 +11,9 @@ export const artistDetail = {
   notFound: 'Artist not found.',
   albumsBy: 'Albums by {{name}}',
   albumsByLossless: 'Lossless albums by {{name}}',
+  sortYearToggleAria: 'Toggle album year sort within each release type',
+  sortYearDesc: 'Year, newest first',
+  sortYearAsc: 'Year, oldest first',
   topTracks: 'Top Tracks',
   topTracksLossless: 'Lossless Tracks',
   noAlbums: 'No albums found.',