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/Audiobookshelf_swiftApp.swift

@@ -56,9 +56,18 @@ struct Audiobookshelf_swiftApp: App {
 
     #if os(iOS)
     private func configureAudioSession() {
-        // Nur die Kategorie registrieren — setActive(true) passiert erst in play(),
-        // damit beim App-Start keine laufende Fremd-Wiedergabe unterbrochen wird.
-        try? AVAudioSession.sharedInstance().setCategory(.playback, mode: .default, options: [])
+        // `.spokenAudio` + `.longFormAudio` policy: iOS-Hinweis dass es sich um
+        // ernsthafte Audio-Wiedergabe handelt (nicht Tasten-Sounds). Aktiviert
+        // u. a. das AirPlay-Routing im Control Center / Lockscreen und sorgt
+        // für richtigen Ducking-/Interruption-Behavior bei Anrufen.
+        // setActive(true) passiert erst in play() damit beim App-Start
+        // keine laufende Fremd-Wiedergabe unterbrochen wird.
+        try? AVAudioSession.sharedInstance().setCategory(
+            .playback,
+            mode: .spokenAudio,
+            policy: .longFormAudio,
+            options: []
+        )
     }
     #endif
 }