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/Features/Trip/Views/ItineraryReorderingLogic.swift

@@ -83,7 +83,9 @@ enum ItineraryReorderingLogic {
                     // nil is valid during initial display before travel is persisted.
                     let lookedUp = findTravelSortOrder(segment)
                     sortOrder = lookedUp ?? defaultTravelSortOrder
+                    #if DEBUG
                     print("📋 [flattenDays] Travel \(segment.fromLocation.name)->\(segment.toLocation.name) on day \(day.dayNumber): lookedUp=\(String(describing: lookedUp)), using sortOrder=\(sortOrder)")
+                    #endif
                     
                 case .games, .dayHeader:
                     // These item types are not movable and handled separately.
@@ -319,6 +321,7 @@ enum ItineraryReorderingLogic {
         }
 
         // DEBUG: Log the row positions
+        #if DEBUG
         print("🔢 [calculateSortOrder] row=\(row), day=\(day), gamesRow=\(String(describing: gamesRow))")
         print("🔢 [calculateSortOrder] items around row:")
         for i in max(0, row - 2)...min(items.count - 1, row + 2) {
@@ -326,6 +329,7 @@ enum ItineraryReorderingLogic {
             let gMarker = (gamesRow == i) ? " [GAMES]" : ""
             print("🔢   \(marker) [\(i)] \(items[i])\(gMarker)")
         }
+        #endif
 
         // Strict region classification:
         // - row < gamesRow => before-games (negative sortOrder)
@@ -333,10 +337,14 @@ enum ItineraryReorderingLogic {
         let isBeforeGames: Bool
         if let gr = gamesRow {
             isBeforeGames = row < gr
+            #if DEBUG
             print("🔢 [calculateSortOrder] row(\(row)) < gamesRow(\(gr)) = \(isBeforeGames) → isBeforeGames=\(isBeforeGames)")
+            #endif
         } else {
             isBeforeGames = false  // No games means everything is "after games"
+            #if DEBUG
             print("🔢 [calculateSortOrder] No games on day \(day) → isBeforeGames=false")
+            #endif
         }
         
         /// Get sortOrder from a movable item (custom item or travel)
@@ -442,7 +450,9 @@ enum ItineraryReorderingLogic {
             }
         }
 
+        #if DEBUG
         print("🔢 [calculateSortOrder] RESULT: \(result) (isBeforeGames=\(isBeforeGames))")
+        #endif
         return result
     }