feat: add planning tips and grouped trip options sorting

- Add PlanningTips data model with 105 tips across 7 categories
- Wire random tips into HomeView (3 tips per session)
- Add TripOptionsGrouper for grouping by city/game count and mileage
- Update TripOptionsView with sectioned display when sorting
- Recommended and Best Efficiency remain flat lists

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

SportsTime/Features/Home/Views/HomeView.swift

@@ -16,6 +16,7 @@ struct HomeView: View {
     @State private var selectedTab = 0
     @State private var suggestedTripsGenerator = SuggestedTripsGenerator()
     @State private var selectedSuggestedTrip: SuggestedTrip?
+    @State private var displayedTips: [PlanningTip] = []
 
     var body: some View {
         TabView(selection: $selectedTab) {
@@ -317,9 +318,9 @@ struct HomeView: View {
                 .foregroundStyle(Theme.textPrimary(colorScheme))
 
             VStack(spacing: Theme.Spacing.xs) {
-                TipRow(icon: "calendar.badge.clock", title: "Check schedules early", subtitle: "Game times can change, sync often")
-                TipRow(icon: "car.fill", title: "Plan rest days", subtitle: "Don't overdo the driving")
-                TipRow(icon: "star.fill", title: "Mark must-sees", subtitle: "Ensure your favorite matchups are included")
+                ForEach(displayedTips) { tip in
+                    TipRow(icon: tip.icon, title: tip.title, subtitle: tip.subtitle)
+                }
             }
             .padding(Theme.Spacing.md)
             .background(Theme.cardBackground(colorScheme))
@@ -329,6 +330,11 @@ struct HomeView: View {
                     .stroke(Theme.surfaceGlow(colorScheme), lineWidth: 1)
             }
         }
+        .onAppear {
+            if displayedTips.isEmpty {
+                displayedTips = PlanningTips.random(3)
+            }
+        }
     }
 }