Home screen, library-wide search, splash with orbital particles, macOS download fix

- Add Netflix-style Home with recent audiobooks/podcasts, list/grid toggle shared with Library
- Add searchable libraries — audiobooks filter on title/author; podcasts also index and search episodes across the whole library
- Add unified context menu (download / progress remove) across Home, Library, and PodcastDetail
- Rework cover badges: listened checkmark top-right, download indicator bottom-right; hide progress bar when finished
- Add AirPlay picker in PlayerBar
- Replace splash with four-phase animation: orbital particles → attract → flash → fade; cross-platform iOS+macOS, runtime AppIcon lookup
- Fix macOS parallel downloads: align connection settings with iOS, raise timeoutIntervalForRequest to 300s
- Fix progress deletion using server-side progress UUID (DELETE /api/me/progress/:id)
- Bump CFBundleVersion to 8

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

ABS Client/Audiobookshelf swift/Views/PlayerBar.swift

@@ -114,6 +114,10 @@ struct PlayerBar: View {
 
                 rateMenu
 
+                AirPlayPickerButton()
+                    .frame(width: 26, height: 26)
+                    .disabled(!app.player.isReady)
+
                 Button {
                     app.stopPlayback()
                 } label: {
@@ -150,6 +154,11 @@ struct PlayerBar: View {
 
             sleepMenu
 
+            AirPlayPickerButton()
+                .frame(width: 24, height: 24)
+                .disabled(!app.player.isReady)
+                .help("Auf anderem Gerät abspielen (AirPlay)")
+
             Spacer(minLength: 0)
 
             if historyEnabled {