debug: trips navigation lifecycle logging

ios/Platform/Platform/Features/Trips/ViewModels/TripsViewModel.swift

@@ -27,8 +27,11 @@ final class TripsViewModel {
         error = nil
 
         do {
-            trips = try await api.getTrips()
+            let fetched = try await api.getTrips()
+            print("[TRIPS] loadTrips: fetched \(fetched.count) trips")
+            trips = fetched
         } catch {
+            print("[TRIPS] loadTrips ERROR: \(error)")
             self.error = error.localizedDescription
         }
         isLoading = false
@@ -37,8 +40,11 @@ final class TripsViewModel {
     func refresh() async {
         isLoading = true
         do {
-            trips = try await api.getTrips()
+            let fetched = try await api.getTrips()
+            print("[TRIPS] refresh: fetched \(fetched.count) trips")
+            trips = fetched
         } catch {
+            print("[TRIPS] refresh ERROR: \(error)")
             self.error = error.localizedDescription
         }
         isLoading = false

ios/Platform/Platform/Features/Trips/Views/PastTripsSection.swift

@@ -7,6 +7,7 @@ struct PastTripsSection: View {
     let namespace: Namespace.ID
 
     var body: some View {
+        let _ = { print("[TRIPS] PastTripsSection body — trips=\(trips.count) ids=\(trips.map(\.id))") }()
         if !trips.isEmpty {
             Section {
                 ScrollView(.horizontal) {

ios/Platform/Platform/Features/Trips/Views/TripsHomeView.swift

@@ -37,6 +37,12 @@ struct TripsHomeView: View {
                 }
             }
             .background(Color.canvas)
+            .onAppear {
+                print("[TRIPS] TripsHomeView onAppear — trips=\(vm.trips.count) upcoming=\(vm.upcomingTrips.count) past=\(vm.pastTrips.count) isLoading=\(vm.isLoading)")
+            }
+            .onChange(of: vm.trips.count) { old, new in
+                print("[TRIPS] trips count changed \(old) → \(new)")
+            }
             .toolbar {
                 // Custom expanded title — Wishlist pattern
                 ToolbarItem(placement: .title) {

ios/Platform/Platform/Features/Trips/Views/UpcomingTripsPageView.swift

@@ -8,6 +8,7 @@ struct UpcomingTripsPageView: View {
     @Namespace private var namespace
 
     var body: some View {
+        let _ = { print("[TRIPS] UpcomingTripsPageView body — trips=\(trips.count) ids=\(trips.map(\.id))") }()
         if trips.isEmpty {
             // No upcoming trips — show a prompt
             VStack(spacing: 16) {
@@ -30,6 +31,8 @@ struct UpcomingTripsPageView: View {
                         TripPlaceholderView(trip: trip)
                             .navigationTransition(
                                 .zoom(sourceID: trip.id, in: namespace))
+                            .onAppear { print("[TRIPS] detail onAppear: \(trip.name)") }
+                            .onDisappear { print("[TRIPS] detail onDisappear: \(trip.name)") }
                     } label: {
                         TripImageView(url: trip.imageURL, fallbackName: trip.name)
                             .overlay(alignment: .bottomLeading) {