feat: add marketing video mode and Remotion marketing video project

Add debug-only Marketing Video Mode toggle that enables hands-free
screen recording across the app: auto-scrolling Featured Trips carousel,
auto-filling trip wizard, smooth trip detail scrolling via CADisplayLink,
and trip options auto-sort with scroll.

Add Remotion marketing video project with 6 scene compositions using
image sequences extracted from screen recordings, varied phone entrance
animations, and deduped frames for smooth playback.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

SportsTime/Features/Home/Views/HomeView.swift

@@ -18,6 +18,9 @@ struct HomeView: View {
     @State private var selectedSuggestedTrip: SuggestedTrip?
     @State private var displayedTips: [PlanningTip] = []
     @State private var showProPaywall = false
+    #if DEBUG
+    @State private var marketingAutoScroll = false
+    #endif
 
     var body: some View {
         TabView(selection: $selectedTab) {
@@ -27,6 +30,7 @@ struct HomeView: View {
                     showNewTrip: $showNewTrip,
                     selectedTab: $selectedTab,
                     selectedSuggestedTrip: $selectedSuggestedTrip,
+                    marketingAutoScroll: marketingAutoScrollBinding,
                     savedTrips: savedTrips,
                     suggestedTripsGenerator: suggestedTripsGenerator,
                     displayedTips: displayedTips
@@ -98,6 +102,13 @@ struct HomeView: View {
             let oldName = oldTab < tabNames.count ? tabNames[oldTab] : nil
             AnalyticsManager.shared.track(.tabSwitched(tab: newName, previousTab: oldName))
             AnalyticsManager.shared.trackScreen(newName)
+            #if DEBUG
+            if newTab == 0 && UserDefaults.standard.bool(forKey: "marketingVideoMode") {
+                DispatchQueue.main.asyncAfter(deadline: .now() + 0.8) {
+                    marketingAutoScroll = true
+                }
+            }
+            #endif
         }
         .sheet(isPresented: $showNewTrip) {
             TripWizardView()
@@ -131,6 +142,14 @@ struct HomeView: View {
         }
     }
 
+    private var marketingAutoScrollBinding: Binding<Bool> {
+        #if DEBUG
+        return $marketingAutoScroll
+        #else
+        return .constant(false)
+        #endif
+    }
+
     // MARK: - Hero Card
 
     private var heroCard: some View {