feat: add WCAG AA accessibility app-wide, fix CloudKit container config, remove debug logs

- Add VoiceOver labels, hints, and element grouping across all 60+ views
- Add Reduce Motion support (Theme.Animation.prefersReducedMotion) to all animations
- Replace fixed font sizes with semantic Dynamic Type styles
- Hide decorative elements from VoiceOver with .accessibilityHidden(true)
- Add .minimumHitTarget() modifier ensuring 44pt touch targets
- Add AccessibilityAnnouncer utility for VoiceOver announcements
- Improve color contrast values in Theme.swift for WCAG AA compliance
- Extract CloudKitContainerConfig for explicit container identity
- Remove PostHog debug console log from AnalyticsManager

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

SportsTime/Features/Progress/Views/StadiumVisitSheet.swift

@@ -165,6 +165,7 @@ struct StadiumVisitSheet: View {
                                                     .background(Theme.cardBackgroundElevated(colorScheme))
                                                     .clipShape(Capsule())
                                             }
+                                            .accessibilityLabel("Select team \(team.name)")
                                         }
                                     }
                                     .padding(.top, 8)
@@ -201,6 +202,7 @@ struct StadiumVisitSheet: View {
                                                     .background(Theme.cardBackgroundElevated(colorScheme))
                                                     .clipShape(Capsule())
                                             }
+                                            .accessibilityLabel("Select team \(team.name)")
                                         }
                                     }
                                     .padding(.top, 8)
@@ -283,6 +285,7 @@ struct StadiumVisitSheet: View {
                         HStack {
                             Image(systemName: "exclamationmark.triangle.fill")
                                 .foregroundStyle(.orange)
+                                .accessibilityHidden(true)
                             Text(error)
                                 .foregroundStyle(.red)
                         }