fix: companion remote acts as remote instead of host on Android TV

lib/screens/discover_screen.dart

@@ -894,7 +894,7 @@ class _DiscoverScreenState extends State<DiscoverScreen>
               const Spacer(),
               Consumer2<WatchTogetherProvider, CompanionRemoteProvider>(
                 builder: (context, watchTogether, companionRemote, _) {
-                  final isDesktop = PlatformDetector.isDesktop(context);
+                  final isDesktop = PlatformDetector.shouldActAsRemoteHost(context);
                   final userProvider = context.watch<UserProfileProvider>();
 
                   return FocusableActionBar(

lib/screens/main_screen.dart

@@ -419,8 +419,8 @@ class _MainScreenState extends State<MainScreen> with RouteAware, WindowListener
       _multiServerProvider!.addListener(_handleLiveTvChanged);
     }
 
-    // Wire up Companion Remote command routing (desktop only, once)
-    if (!_companionRemoteSetup && PlatformDetector.isDesktop(context)) {
+    // Wire up Companion Remote command routing (host devices only, once)
+    if (!_companionRemoteSetup && PlatformDetector.shouldActAsRemoteHost(context)) {
       _companionRemoteSetup = true;
       _setupCompanionRemote();
     }

lib/screens/settings/settings_screen.dart

@@ -1160,7 +1160,7 @@ class _SettingsScreenState extends State<SettingsScreen> with FocusableTab {
                   style: Theme.of(context).textTheme.titleMedium?.copyWith(fontWeight: FontWeight.bold),
                 ),
               ),
-              if (PlatformDetector.isDesktop(context))
+              if (PlatformDetector.shouldActAsRemoteHost(context))
                 ListTile(
                   leading: const AppIcon(Symbols.phone_android_rounded, fill: 1),
                   title: Text(t.companionRemote.hostRemoteSession),

lib/utils/platform_detector.dart

@@ -51,6 +51,12 @@ class PlatformDetector {
     return isDesktop(context) || isTV();
   }
 
+  /// Whether this device should act as a companion remote host (receiver).
+  /// Desktop platforms and Android TV are hosts; phones/tablets are controllers.
+  static bool shouldActAsRemoteHost(BuildContext context) {
+    return isDesktop(context) || isTV();
+  }
+
   /// Detects if running on a mobile platform (iOS or Android)
   /// Uses Theme for consistent platform detection across the app
   static bool isMobile(BuildContext context) {