Expose Background Playback toggle on tvOS, default off

Surfaces the existing iOS/macOS Background Playback setting in the tvOS
Playback settings, defaulting to off so audio stops when the user leaves
the app via the TV button. Pauses playback on .background/.inactive when
the toggle is off, regardless of audio route — the user's setting wins
over AirPlay/HomePod handoff. Also auto-shows the tvOS player controls
when returning to foreground so the paused state is immediately visible
and actionable.

Yattee/Core/Settings/SettingsManager+Playback.swift

@@ -40,7 +40,7 @@ extension SettingsManager {
     var backgroundPlaybackEnabled: Bool {
         get {
             if let cached = _backgroundPlaybackEnabled { return cached }
-            return bool(for: .backgroundPlayback, default: true)
+            return bool(for: .backgroundPlayback, default: backgroundPlaybackDefault)
         }
         set {
             _backgroundPlaybackEnabled = newValue
@@ -48,6 +48,14 @@ extension SettingsManager {
         }
     }
 
+    private var backgroundPlaybackDefault: Bool {
+        #if os(tvOS)
+        return false
+        #else
+        return true
+        #endif
+    }
+
     /// tvOS only: when enabled, the Siri remote Menu button closes the video
     /// (clears queue, stops playback) instead of only collapsing the player.
     /// When enabled, the explicit top-bar close button is hidden.

Yattee/Services/Player/PlayerService.swift

@@ -650,6 +650,15 @@ final class PlayerService {
         #else
         let isPiPActive = false
         #endif
+
+        #if os(tvOS)
+        LoggingService.shared.debug("PlayerService[tvOS-bg]: phase=\(phase) bgEnabled=\(backgroundEnabled) playbackState=\(state.playbackState)", category: .player)
+        if (phase == .background || phase == .inactive), !backgroundEnabled, state.playbackState == .playing {
+            LoggingService.shared.debug("PlayerService[tvOS-bg]: pausing playback (phase=\(phase), backgroundPlaybackEnabled=false)", category: .player)
+            pause()
+        }
+        #endif
+
         currentBackend?.handleScenePhase(phase, backgroundEnabled: backgroundEnabled, isPiPActive: isPiPActive)
     }
 

Yattee/Views/Player/tvOS/TVPlayerView.swift

@@ -31,6 +31,7 @@ enum TVPlayerFocusTarget: Hashable {
 struct TVPlayerView: View {
     @Environment(\.appEnvironment) private var appEnvironment
     @Environment(\.dismiss) private var dismiss
+    @Environment(\.scenePhase) private var scenePhase
 
     // MARK: - State
 
@@ -397,6 +398,13 @@ struct TVPlayerView: View {
                 showControls()
             }
         }
+        // When app returns to foreground (e.g. after auto-pause from background),
+        // surface the controls so the user can immediately resume or navigate.
+        .onChange(of: scenePhase) { oldPhase, newPhase in
+            if newPhase == .active && oldPhase != .active {
+                showControls()
+            }
+        }
     }
 
     // MARK: - Failure Overlays

Yattee/Views/Settings/PlaybackSettingsView.swift

@@ -271,12 +271,10 @@ private struct BehaviorSection: View {
                 }
             }
 
-            #if os(iOS) || os(macOS)
             Toggle(
                 String(localized: "settings.playback.backgroundPlayback"),
                 isOn: $settings.backgroundPlaybackEnabled
             )
-            #endif
 
             #if os(tvOS)
             Toggle(