Add iOS/iPad target with platform-adaptive UI

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

mlbTVOS/Views/SingleStreamPlayerView.swift

@@ -76,6 +76,7 @@ private func makeSingleStreamPlayerItem(from source: SingleStreamPlaybackSource)
 }
 
 struct SingleStreamPlaybackScreen: View {
+    @Environment(\.dismiss) private var dismiss
     let resolveSource: @Sendable () async -> SingleStreamPlaybackSource?
     var resolveNextSource: (@Sendable (URL?) async -> SingleStreamPlaybackSource?)? = nil
     let tickerGames: [Game]
@@ -90,6 +91,18 @@ struct SingleStreamPlaybackScreen: View {
                 .padding(.horizontal, 18)
                 .padding(.bottom, 14)
         }
+        .overlay(alignment: .topTrailing) {
+            #if os(iOS)
+            Button {
+                dismiss()
+            } label: {
+                Image(systemName: "xmark.circle.fill")
+                    .font(.system(size: 28, weight: .bold))
+                    .foregroundStyle(.white.opacity(0.9))
+                    .padding(20)
+            }
+            #endif
+        }
         .ignoresSafeArea()
         .onAppear {
             logSingleStream("SingleStreamPlaybackScreen appeared tickerGames=\(tickerGames.count) tickerMode=marqueeOverlay")
@@ -103,10 +116,12 @@ struct SingleStreamPlaybackScreen: View {
 struct SingleStreamPlaybackSource: Sendable {
     let url: URL
     let httpHeaders: [String: String]
+    let forceMuteAudio: Bool
 
-    init(url: URL, httpHeaders: [String: String] = [:]) {
+    init(url: URL, httpHeaders: [String: String] = [:], forceMuteAudio: Bool = false) {
         self.url = url
         self.httpHeaders = httpHeaders
+        self.forceMuteAudio = forceMuteAudio
     }
 }
 
@@ -285,6 +300,9 @@ struct SingleStreamPlayerView: UIViewControllerRepresentable {
         let controller = AVPlayerViewController()
         controller.allowsPictureInPicturePlayback = true
         controller.showsPlaybackControls = true
+        #if os(iOS)
+        controller.canStartPictureInPictureAutomaticallyFromInline = true
+        #endif
         logSingleStream("AVPlayerViewController configured without contentOverlayView ticker")
 
         Task { @MainActor in
@@ -311,6 +329,7 @@ struct SingleStreamPlayerView: UIViewControllerRepresentable {
             let playerItem = makeSingleStreamPlayerItem(from: source)
             let player = AVPlayer(playerItem: playerItem)
             player.automaticallyWaitsToMinimizeStalling = false
+            player.isMuted = source.forceMuteAudio
             logSingleStream("Configured player for fast start preferredForwardBufferDuration=2 automaticallyWaitsToMinimizeStalling=false")
             context.coordinator.attachDebugObservers(to: player, url: url, resolveNextSource: resolveNextSource)
             controller.player = player
@@ -433,6 +452,7 @@ struct SingleStreamPlayerView: UIViewControllerRepresentable {
                         let nextItem = makeSingleStreamPlayerItem(from: nextSource)
                         player.replaceCurrentItem(with: nextItem)
                         player.automaticallyWaitsToMinimizeStalling = false
+                        player.isMuted = nextSource.forceMuteAudio
                         self.attachDebugObservers(to: player, url: nextSource.url, resolveNextSource: resolveNextSource)
                         logSingleStream("Autoplay replacing item and replaying url=\(singleStreamDebugURLDescription(nextSource.url))")
                         player.playImmediately(atRate: 1.0)