Improve UI consistency and add heart save button

- Add themed background to all tab views (Schedule, Settings, My Trips)
- Remove navigation titles from all screens (tab bar provides context)
- Add empty state to My Trips view
- Remove max driving hours slider from trip planner (available in Settings)
- Replace save menu with heart button overlay on trip detail map
- Add ability to unsave trips by tapping heart again

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

SportsTime/Features/Home/Views/HomeView.swift

@@ -48,7 +48,6 @@ struct HomeView: View {
                     .padding(Theme.Spacing.md)
                 }
                 .themedBackground()
-                .navigationTitle("SportsTime")
                 .toolbar {
                     ToolbarItem(placement: .primaryAction) {
                         Button {
@@ -470,35 +469,45 @@ struct SavedTripsListView: View {
     @Environment(\.colorScheme) private var colorScheme
 
     var body: some View {
-        Group {
+        ScrollView {
             if trips.isEmpty {
-                EmptyStateView(
-                    icon: "suitcase",
-                    title: "No Saved Trips",
-                    message: "Your planned adventures will appear here. Start planning your first sports road trip!"
-                )
-                .frame(maxWidth: .infinity, maxHeight: .infinity)
+                VStack(spacing: 16) {
+                    Spacer()
+                        .frame(height: 100)
+
+                    Image(systemName: "suitcase")
+                        .font(.system(size: 60))
+                        .foregroundColor(.secondary)
+
+                    Text("No Saved Trips")
+                        .font(.title2)
+                        .fontWeight(.semibold)
+
+                    Text("Browse featured trips on the Home tab or create your own to get started.")
+                        .font(.subheadline)
+                        .foregroundColor(.secondary)
+                        .multilineTextAlignment(.center)
+                        .padding(.horizontal, 40)
+                }
+                .frame(maxWidth: .infinity)
             } else {
-                ScrollView {
-                    LazyVStack(spacing: Theme.Spacing.md) {
-                        ForEach(Array(trips.enumerated()), id: \.element.id) { index, savedTrip in
-                            if let trip = savedTrip.trip {
-                                NavigationLink {
-                                    TripDetailView(trip: trip, games: savedTrip.games)
-                                } label: {
-                                    SavedTripListRow(trip: trip)
-                                }
-                                .buttonStyle(.plain)
-                                .staggeredAnimation(index: index)
+                LazyVStack(spacing: Theme.Spacing.md) {
+                    ForEach(Array(trips.enumerated()), id: \.element.id) { index, savedTrip in
+                        if let trip = savedTrip.trip {
+                            NavigationLink {
+                                TripDetailView(trip: trip, games: savedTrip.games)
+                            } label: {
+                                SavedTripListRow(trip: trip)
                             }
+                            .buttonStyle(.plain)
+                            .staggeredAnimation(index: index)
                         }
                     }
-                    .padding(Theme.Spacing.md)
                 }
+                .padding(Theme.Spacing.md)
             }
         }
         .themedBackground()
-        .navigationTitle("My Trips")
     }
 }