Improve tvOS settings UI styling and navigation

- Add TVOSPlainToggleStyle for cleaner toggle appearance on tvOS
- Remove focus overlays from settings navigation links and buttons
- Apply plain button and list styles across all settings screens
- Implement custom system controls picker for tvOS to avoid focus overlay
- Update SettingsPickerModifier with platform-specific styling

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Shared/Home/HomeView.swift

@@ -43,7 +43,7 @@ struct HomeView: View {
                             AccentButton(imageSystemName: "ellipsis") {
                                 NavigationModel.shared.presentingOpenVideos = true
                             }
-                            .frame(maxWidth: 40)
+                            .frame(maxWidth: 40)	
                         }
                     }
                 #endif
@@ -74,6 +74,7 @@ struct HomeView: View {
                     #if os(tvOS)
                     .font(.caption)
                     .imageScale(.small)
+                    .foregroundColor(.primary)
                     #endif
                 #endif
             }