Enhance PDF export with maps, images, and progress UI

- Add MapSnapshotService for route maps and city maps using MKMapSnapshotter
- Add RemoteImageService for team logos and stadium photos with caching
- Add POISearchService for nearby attractions using MKLocalSearch
- Add PDFAssetPrefetcher to orchestrate parallel asset fetching
- Rewrite PDFGenerator with rich page layouts: cover, route overview,
  day-by-day itinerary, city spotlights, and summary pages
- Add export progress overlay in TripDetailView with animated progress ring

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

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

SportsTime/Features/Trip/Views/TripDetailView.swift

@@ -19,6 +19,8 @@ struct TripDetailView: View {
     @State private var showShareSheet = false
     @State private var exportURL: URL?
     @State private var shareURL: URL?
+    @State private var isExporting = false
+    @State private var exportProgress: PDFAssetPrefetcher.PrefetchProgress?
     @State private var mapCameraPosition: MapCameraPosition = .automatic
     @State private var isSaved = false
     @State private var routePolylines: [MKPolyline] = []
@@ -93,6 +95,64 @@ struct TripDetailView: View {
         .onAppear {
             checkIfSaved()
         }
+        .overlay {
+            if isExporting {
+                exportProgressOverlay
+            }
+        }
+    }
+
+    // MARK: - Export Progress Overlay
+
+    private var exportProgressOverlay: some View {
+        ZStack {
+            // Background dimmer
+            Color.black.opacity(0.6)
+                .ignoresSafeArea()
+
+            // Progress card
+            VStack(spacing: Theme.Spacing.lg) {
+                // Progress ring
+                ZStack {
+                    Circle()
+                        .stroke(Theme.cardBackgroundElevated(colorScheme), lineWidth: 8)
+                        .frame(width: 80, height: 80)
+
+                    Circle()
+                        .trim(from: 0, to: exportProgress?.percentComplete ?? 0)
+                        .stroke(Theme.warmOrange, style: StrokeStyle(lineWidth: 8, lineCap: .round))
+                        .frame(width: 80, height: 80)
+                        .rotationEffect(.degrees(-90))
+                        .animation(.easeInOut(duration: 0.3), value: exportProgress?.percentComplete)
+
+                    Image(systemName: "doc.fill")
+                        .font(.system(size: 24))
+                        .foregroundStyle(Theme.warmOrange)
+                }
+
+                VStack(spacing: Theme.Spacing.xs) {
+                    Text("Creating PDF")
+                        .font(.system(size: Theme.FontSize.cardTitle, weight: .semibold))
+                        .foregroundStyle(Theme.textPrimary(colorScheme))
+
+                    Text(exportProgress?.currentStep ?? "Preparing...")
+                        .font(.system(size: Theme.FontSize.caption))
+                        .foregroundStyle(Theme.textSecondary(colorScheme))
+                        .multilineTextAlignment(.center)
+
+                    if let progress = exportProgress {
+                        Text("\(Int(progress.percentComplete * 100))%")
+                            .font(.system(size: Theme.FontSize.micro, weight: .medium, design: .monospaced))
+                            .foregroundStyle(Theme.textMuted(colorScheme))
+                    }
+                }
+            }
+            .padding(Theme.Spacing.xl)
+            .background(Theme.cardBackground(colorScheme))
+            .clipShape(RoundedRectangle(cornerRadius: Theme.CornerRadius.large))
+            .shadow(color: .black.opacity(0.3), radius: 20, y: 10)
+        }
+        .transition(.opacity)
     }
 
     // MARK: - Hero Map Section
@@ -432,13 +492,22 @@ struct TripDetailView: View {
     // MARK: - Actions
 
     private func exportPDF() async {
+        isExporting = true
+        exportProgress = nil
+
         do {
-            let url = try await exportService.exportToPDF(trip: trip, games: games)
+            let url = try await exportService.exportToPDF(trip: trip, games: games) { progress in
+                await MainActor.run {
+                    self.exportProgress = progress
+                }
+            }
             exportURL = url
             showExportSheet = true
         } catch {
             print("Failed to export PDF: \(error)")
         }
+
+        isExporting = false
     }
 
     private func shareTrip() async {