fix: codebase audit fixes — safety, accessibility, and production hygiene

Address 16 issues from external audit:
- Move StoreKit transaction listener ownership to StoreManager singleton with proper deinit
- Remove noisy VoiceOver announcements, add missing accessibility on StatPill and BootstrapLoadingView
- Replace String @retroactive Identifiable with IdentifiableShareCode wrapper
- Add crash guard in AchievementEngine getContributingVisitIds + cache stadium lookups
- Pre-compute GamesHistoryViewModel filtered properties to avoid redundant SwiftUI recomputation
- Remove force-unwraps in ProgressMapView with safe guard-let fallback
- Add diff-based update gating in ItineraryTableViewWrapper to prevent unnecessary reloads
- Replace deprecated UIScreen.main with UIWindowScene lookup
- Add deinit task cancellation in ScheduleViewModel and SuggestedTripsGenerator
- Wrap ~234 unguarded print() calls across 27 files in #if DEBUG

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

SportsTime/Planning/Engine/ScenarioAPlanner.swift

@@ -192,12 +192,14 @@ final class ScenarioAPlanner: ScenarioPlanner {
             }
         }
 
+        #if DEBUG
         print("🔍 ScenarioA: filteredGames=\(filteredGames.count), validRoutes=\(validRoutes.count)")
         if let firstRoute = validRoutes.first {
             print("🔍 ScenarioA: First route has \(firstRoute.count) games")
             let cities = firstRoute.compactMap { request.stadiums[$0.stadiumId]?.city }
             print("🔍 ScenarioA: Route cities: \(cities)")
         }
+        #endif
 
         if validRoutes.isEmpty {
             let noMustStopSatisfyingRoutes = !requiredMustStops.isEmpty
@@ -233,13 +235,17 @@ final class ScenarioAPlanner: ScenarioPlanner {
             // Build stops for this route
             let stops = buildStops(from: routeGames, stadiums: request.stadiums)
 
+            #if DEBUG
             // Debug: show stops created from games
             let stopCities = stops.map { "\($0.city)(\($0.games.count)g)" }
             print("🔍 ScenarioA: Route \(index) - \(routeGames.count) games → \(stops.count) stops: \(stopCities)")
+            #endif
 
             guard !stops.isEmpty else {
                 routesFailed += 1
+                #if DEBUG
                 print("⚠️ ScenarioA: Route \(index) - buildStops returned empty")
+                #endif
                 continue
             }
 
@@ -250,7 +256,9 @@ final class ScenarioAPlanner: ScenarioPlanner {
             ) else {
                 // This route fails driving constraints, skip it
                 routesFailed += 1
+                #if DEBUG
                 print("⚠️ ScenarioA: Route \(index) - ItineraryBuilder.build failed")
+                #endif
                 continue
             }
 
@@ -291,21 +299,25 @@ final class ScenarioAPlanner: ScenarioPlanner {
         // Sort and rank based on leisure level
         let leisureLevel = request.preferences.leisureLevel
 
+        #if DEBUG
         // Debug: show all options before sorting
         print("🔍 ScenarioA: \(itineraryOptions.count) itinerary options before sorting:")
         for (i, opt) in itineraryOptions.enumerated() {
             print("   Option \(i): \(opt.stops.count) stops, \(opt.totalGames) games, \(String(format: "%.1f", opt.totalDrivingHours))h driving")
         }
+        #endif
 
         let rankedOptions = ItineraryOption.sortByLeisure(
             itineraryOptions,
             leisureLevel: leisureLevel
         )
 
+        #if DEBUG
         print("🔍 ScenarioA: Returning \(rankedOptions.count) options after sorting")
         if let first = rankedOptions.first {
             print("🔍 ScenarioA: First option has \(first.stops.count) stops")
         }
+        #endif
 
         return .success(rankedOptions)
     }
@@ -479,10 +491,12 @@ final class ScenarioAPlanner: ScenarioPlanner {
             }
         }
 
+        #if DEBUG
         print("🔍 ScenarioA Regional: Partitioned \(games.count) games into \(gamesByRegion.count) regions")
         for (region, regionGames) in gamesByRegion {
             print("   \(region.shortName): \(regionGames.count) games")
         }
+        #endif
 
         // Run beam search for each region
         var allRoutes: [[Game]] = []
@@ -497,7 +511,9 @@ final class ScenarioAPlanner: ScenarioPlanner {
                 stopBuilder: buildStops
             )
 
+            #if DEBUG
             print("🔍 ScenarioA Regional: \(region.shortName) produced \(regionRoutes.count) routes")
+            #endif
             allRoutes.append(contentsOf: regionRoutes)
         }