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/Trip/Views/Wizard/Steps/PlanningModeStep.swift

@@ -39,7 +39,7 @@ struct PlanningModeStep: View {
         .onAppear {
             if isDemoMode && selection == nil {
                 DispatchQueue.main.asyncAfter(deadline: .now() + DemoConfig.selectionDelay) {
-                    withAnimation(.easeInOut(duration: 0.3)) {
+                    Theme.Animation.withMotion(.easeInOut(duration: 0.3)) {
                         selection = DemoConfig.demoPlanningMode
                     }
                 }
@@ -63,6 +63,7 @@ private struct WizardModeCard: View {
                     .font(.title2)
                     .foregroundStyle(isSelected ? Theme.warmOrange : Theme.textSecondary(colorScheme))
                     .frame(width: 32)
+                    .accessibilityHidden(true)
 
                 VStack(alignment: .leading, spacing: 2) {
                     Text(mode.displayName)
@@ -79,6 +80,7 @@ private struct WizardModeCard: View {
                 if isSelected {
                     Image(systemName: "checkmark.circle.fill")
                         .foregroundStyle(Theme.warmOrange)
+                        .accessibilityHidden(true)
                 }
             }
             .padding(Theme.Spacing.md)
@@ -89,7 +91,11 @@ private struct WizardModeCard: View {
                 RoundedRectangle(cornerRadius: Theme.CornerRadius.medium)
                     .stroke(isSelected ? Theme.warmOrange : Theme.textMuted(colorScheme).opacity(0.3), lineWidth: isSelected ? 2 : 1)
             )
+            .accessibilityElement(children: .combine)
         }
+        .accessibilityLabel("\(mode.displayName): \(mode.description)")
+        .accessibilityValue(isSelected ? "Selected" : "Not selected")
+        .accessibilityAddTraits(isSelected ? .isSelected : [])
         .accessibilityIdentifier("wizard.planningMode.\(mode.rawValue)")
         .buttonStyle(.plain)
     }