feat: rewrite bootstrap, fix CloudKit sync, update canonical data, and UI fixes

- Rewrite BootstrapService: remove all legacy code paths (JSONStadium,
  JSONGame, bootstrapStadiumsLegacy, bootstrapGamesLegacy, venue aliases,
  createDefaultLeagueStructure), require canonical JSON files only
- Add clearCanonicalData() to handle partial bootstrap recovery (prevents
  duplicate key crashes from interrupted first-launch)
- Fix nullable stadium_canonical_id in games (4 MLS games have null)
- Fix CKModels: logoUrl case, conference/division field keys
- Fix CanonicalSyncService: sync conferenceCanonicalId/divisionCanonicalId
- Add sports_canonical.json and DemoMode.swift
- Delete legacy stadiums.json and games.json
- Update all canonical resource JSON files with latest data
- Fix TripWizardView horizontal scrolling with GeometryReader constraint
- Update RegionMapSelector, TripDetailView, TripOptionsView UI improvements
- Add DateRangePicker, PlanningModeStep, SportsStep enhancements
- Update UI tests and marketing-videos config

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

SportsTime/Core/Services/CloudKitService.swift

@@ -598,11 +598,27 @@ actor CloudKitService {
         try await publicDatabase.save(subscription)
     }
 
+    func subscribeToSportUpdates() async throws {
+        let subscription = CKQuerySubscription(
+            recordType: CKRecordType.sport,
+            predicate: NSPredicate(value: true),
+            subscriptionID: "sport-updates",
+            options: [.firesOnRecordCreation, .firesOnRecordUpdate]
+        )
+
+        let notification = CKSubscription.NotificationInfo()
+        notification.shouldSendContentAvailable = true
+        subscription.notificationInfo = notification
+
+        try await publicDatabase.save(subscription)
+    }
+
     /// Subscribe to all canonical data updates
     func subscribeToAllUpdates() async throws {
         try await subscribeToScheduleUpdates()
         try await subscribeToLeagueStructureUpdates()
         try await subscribeToTeamAliasUpdates()
         try await subscribeToStadiumAliasUpdates()
+        try await subscribeToSportUpdates()
     }
 }