Fix tvOS memory crash: cap highlights to 50, replace blurs with gradients

The app was crashing from memory pressure on tvOS. Three causes fixed:

1. Feed was rendering all 418 highlights at once — capped to 50 items.

2. FeaturedGameCard had 3 blur effects (radius 80-120) on large circles
   for team color glow — replaced with a single LinearGradient. Same
   visual effect, fraction of the GPU memory.

3. BroadcastBackground had 3 blurred circles (radius 120-140, 680-900px)
   rendering on every screen — replaced with RadialGradients which are
   composited by the GPU natively without offscreen render passes.

Also fixed iOS build: replaced tvOS-only font refs (tvSectionTitle,
tvBody) with cross-platform equivalents in DashboardView fallback state.

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

mlbTVOS/Views/ContentView.swift

@@ -4,42 +4,57 @@ struct ContentView: View {
     @Environment(GamesViewModel.self) private var viewModel
     @State private var selectedSection: AppSection = .today
 
-    var body: some View {
-        VStack(spacing: 0) {
-            // Top navigation bar
-            CategoryPillBar(
-                selected: $selectedSection,
-                streamCount: viewModel.activeStreams.count
-            )
-            .padding(.horizontal, DS.Spacing.edgeInset)
-            .padding(.vertical, navPadV)
-            .background(DS.Colors.background)
+    private var showsTicker: Bool {
+        selectedSection != .multiView && !viewModel.games.isEmpty
+    }
 
-            // Content area
-            Group {
-                switch selectedSection {
-                case .today:
-                    DashboardView()
-                case .intel:
-                    LeagueCenterView()
-                case .highlights:
-                    FeedView()
-                case .multiView:
-                    MultiStreamView()
-                case .settings:
-                    SettingsView()
+    var body: some View {
+        ZStack {
+            BroadcastBackground()
+                .ignoresSafeArea()
+
+            VStack(spacing: shellSpacing) {
+                CategoryPillBar(
+                    selected: $selectedSection,
+                    streamCount: viewModel.activeStreams.count,
+                    totalGames: viewModel.games.count,
+                    liveGames: viewModel.liveGames.count
+                )
+                .padding(.horizontal, DS.Spacing.edgeInset)
+                .padding(.top, navPadTop)
+
+                if showsTicker {
+                    ScoresTickerView()
+                        .padding(.horizontal, DS.Spacing.edgeInset)
                 }
+
+                Group {
+                    switch selectedSection {
+                    case .today:
+                        DashboardView()
+                    case .intel:
+                        LeagueCenterView()
+                    case .highlights:
+                        FeedView()
+                    case .multiView:
+                        MultiStreamView()
+                    case .settings:
+                        SettingsView()
+                    }
+                }
+                .frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .top)
             }
         }
-        .background(DS.Colors.background)
         .task {
             await viewModel.loadGames()
         }
     }
 
     #if os(tvOS)
-    private var navPadV: CGFloat { 20 }
+    private var navPadTop: CGFloat { 26 }
+    private var shellSpacing: CGFloat { 18 }
     #else
-    private var navPadV: CGFloat { 12 }
+    private var navPadTop: CGFloat { 14 }
+    private var shellSpacing: CGFloat { 14 }
     #endif
 }