fix(ui): split album and track artists (OpenSubsonic) (#696)

* fix(ui): split OpenSubsonic album and track artists in header and player

Album detail header uses albumArtists from album or child songs; player bar,
mobile player, and mini player use structured track artists with per-id links.
Adds deriveAlbumHeaderArtistRefs helper and OpenArtistRefInline.

Fixes #552

* docs: changelog and credits for OpenSubsonic artist links (PR #696)

src/styles/layout/player-bar.css

@@ -170,6 +170,20 @@ html[data-platform="windows"] .player-bar.floating {
   margin-top: 2px;
 }
 
+.player-track-artist .open-artist-ref-sep {
+  color: var(--text-muted);
+}
+
+.player-track-artist .player-artist-link {
+  cursor: pointer;
+  text-decoration: none;
+  color: inherit;
+}
+
+.player-track-artist .player-artist-link:hover {
+  text-decoration: underline;
+}
+
 .player-track-rating {
   margin-top: 4px;
   width: auto;

src/styles/layout/track-metadata.css

@@ -25,6 +25,20 @@
   margin-top: 2px;
 }
 
+.mp-artist .open-artist-ref-sep {
+  color: var(--text-muted);
+}
+
+.mp-artist-link {
+  cursor: pointer;
+  text-decoration: none;
+  color: inherit;
+}
+
+.mp-artist-link:hover {
+  text-decoration: underline;
+}
+
 .mp-track-info {
   font-size: 12px;
   color: var(--text-muted);