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/LibraryGridView.swift

@@ -22,7 +22,11 @@ struct LibraryGridView: View {
     private var gridContent: some View {
         ScrollView {
             LazyVGrid(columns: gridColumns, spacing: gridSpacing) {
-                ForEach(items) { item in
+                // Identify by syncKey, not by `id`: a synthetic episode item
+                // shares the podcast container's `id`, so the default
+                // `Identifiable`-based ForEach would collide if both appear in
+                // a single search result list.
+                ForEach(items, id: \.syncKey) { item in
                     LibraryItemCell(item: item, dimDownloading: dimDownloading)
                         .onTapGesture { onSelect(item) }
                 }