Pass selected sport from quick start to trip creation

- Add initialSport parameter to TripCreationView
- Set selected sport when quick start button is tapped
- Auto-select that sport in trip planning view on appear
- Clear selection when sheet is dismissed

🤖 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

@@ -12,6 +12,7 @@ struct HomeView: View {
     @Query(sort: \SavedTrip.updatedAt, order: .reverse) private var savedTrips: [SavedTrip]
 
     @State private var showNewTrip = false
+    @State private var selectedSport: Sport?
     @State private var selectedTab = 0
 
     var body: some View {
@@ -88,7 +89,12 @@ struct HomeView: View {
         }
         .tint(Theme.warmOrange)
         .sheet(isPresented: $showNewTrip) {
-            TripCreationView()
+            TripCreationView(initialSport: selectedSport)
+        }
+        .onChange(of: showNewTrip) { _, isShowing in
+            if !isShowing {
+                selectedSport = nil
+            }
         }
     }
 
@@ -146,6 +152,7 @@ struct HomeView: View {
             HStack(spacing: Theme.Spacing.sm) {
                 ForEach(Sport.supported) { sport in
                     QuickSportButton(sport: sport) {
+                        selectedSport = sport
                         showNewTrip = true
                     }
                 }