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/Polls/Views/PollCreationView.swift

@@ -21,6 +21,7 @@ struct PollCreationView: View {
                 Section {
                     TextField("Poll Title", text: $viewModel.title)
                         .textInputAutocapitalization(.words)
+                        .accessibilityHint("Enter a descriptive name for your poll")
                 } header: {
                     Text("Title")
                 } footer: {
@@ -115,10 +116,13 @@ private struct TripSelectionRow: View {
                 Image(systemName: isSelected ? "checkmark.circle.fill" : "circle")
                     .font(.title2)
                     .foregroundStyle(isSelected ? Theme.warmOrange : .secondary)
+                    .accessibilityHidden(true)
             }
             .contentShape(Rectangle())
         }
         .buttonStyle(.plain)
+        .accessibilityValue(isSelected ? "Selected" : "Not selected")
+        .accessibilityAddTraits(isSelected ? .isSelected : [])
     }
 
     private var tripSummary: String {