fix: liked state not showing until track row disappears/reappears

likedTrackIds loads async after views appear, so isLiked was always
false on initial render. Add onChange(of: likedTrackIds) to all track
row types and the player bar to re-sync when the set is populated.

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

furumi_macos/ArtistScreen.swift

@@ -203,6 +203,7 @@ private struct ArtistTrackRow: View {
         .contentShape(Rectangle())
         .onTapGesture { onPlay() }
         .onAppear { isLiked = authManager.likedTrackIds.contains(track.id) }
+        .onChange(of: authManager.likedTrackIds) { _, ids in isLiked = ids.contains(track.id) }
         .popover(isPresented: $showInfo, arrowEdge: .trailing) {
             TrackInfoView(track: track)
         }

furumi_macos/ContentView.swift

@@ -64,6 +64,9 @@ struct ContentView: View {
         .onChange(of: player.currentTrack?.id) { _, newId in
             isCurrentTrackLiked = newId.map { authManager.likedTrackIds.contains($0) } ?? false
         }
+        .onChange(of: authManager.likedTrackIds) { _, ids in
+            isCurrentTrackLiked = player.currentTrack.map { ids.contains($0.id) } ?? false
+        }
         .onChange(of: deviceManager.remoteState?.updatedAtMs) { _, _ in
             remoteSeekOverride = nil
         }

furumi_macos/PlaylistScreen.swift

@@ -172,6 +172,7 @@ private struct PlaylistTrackRow: View {
         .contentShape(Rectangle())
         .onTapGesture { onPlay() }
         .onAppear { isLiked = authManager.likedTrackIds.contains(track.id) }
+        .onChange(of: authManager.likedTrackIds) { _, ids in isLiked = ids.contains(track.id) }
         .popover(isPresented: $showInfo, arrowEdge: .trailing) {
             TrackInfoView(track: track)
         }

furumi_macos/ReleaseScreen.swift

@@ -170,6 +170,7 @@ private struct ReleaseTrackRow: View {
         .contentShape(Rectangle())
         .onTapGesture { onPlay() }
         .onAppear { isLiked = authManager.likedTrackIds.contains(track.id) }
+        .onChange(of: authManager.likedTrackIds) { _, ids in isLiked = ids.contains(track.id) }
         .popover(isPresented: $showInfo, arrowEdge: .trailing) {
             TrackInfoView(track: track)
         }

furumi_macos/SearchResultsView.swift

@@ -137,6 +137,7 @@ private struct TrackRowSearch: View {
         .contentShape(Rectangle())
         .onTapGesture { onPlay() }
         .onAppear { isLiked = authManager.likedTrackIds.contains(track.id) }
+        .onChange(of: authManager.likedTrackIds) { _, ids in isLiked = ids.contains(track.id) }
         .popover(isPresented: $showInfo, arrowEdge: .trailing) {
             TrackInfoView(track: track)
         }