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/config/settingsCredits.ts

@@ -133,6 +133,7 @@ const CONTRIBUTOR_ENTRIES = [
       'Cover art pipeline: tier ladder, WebP disk cache, dense-grid prefetch, Settings cover cache budget (PR #869)',
       'Lossless: local index browse, Advanced Search and All Albums filters, artist/album drill-down mode, conserved sidebar page (PR #871)',
       'Albums: combined browse filters (genre/year/favorites/lossless/compilations), session restore from album detail, favorites reconcile via local index (PR #876)',
+      'Artist detail: sort albums by year (newest/oldest) in the Albums section (PR #877)',
     ],
   },
   {