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/Export/Views/SharePreviewView.swift

@@ -81,6 +81,7 @@ struct SharePreviewView<Content: ShareableContent>: View {
                     .frame(maxHeight: 400)
                     .clipShape(RoundedRectangle(cornerRadius: Theme.CornerRadius.medium))
                     .shadow(color: .black.opacity(0.2), radius: 10, x: 0, y: 5)
+                    .accessibilityLabel("Share card preview")
             } else if isGenerating {
                 RoundedRectangle(cornerRadius: Theme.CornerRadius.medium)
                     .fill(Theme.cardBackground(colorScheme))
@@ -147,6 +148,9 @@ struct SharePreviewView<Content: ShareableContent>: View {
             }
         }
         .buttonStyle(.plain)
+        .accessibilityLabel("Select \(theme.name) theme")
+        .accessibilityHint(selectedTheme.id == theme.id ? "Currently selected" : "Double-tap to select this theme")
+        .accessibilityAddTraits(selectedTheme.id == theme.id ? .isSelected : [])
     }
 
     // MARK: - Action Buttons
@@ -159,6 +163,7 @@ struct SharePreviewView<Content: ShareableContent>: View {
             } label: {
                 HStack {
                     Image(systemName: "camera.fill")
+                        .accessibilityHidden(true)
                     Text("Share to Instagram")
                 }
                 .frame(maxWidth: .infinity)
@@ -175,6 +180,7 @@ struct SharePreviewView<Content: ShareableContent>: View {
             } label: {
                 HStack {
                     Image(systemName: "doc.on.doc")
+                        .accessibilityHidden(true)
                     Text("Copy to Clipboard")
                 }
                 .frame(maxWidth: .infinity)
@@ -195,6 +201,7 @@ struct SharePreviewView<Content: ShareableContent>: View {
 
             HStack {
                 Image(systemName: "checkmark.circle.fill")
+                    .accessibilityHidden(true)
                 Text("Copied to clipboard")
             }
             .padding()