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/AddItemSheet.swift

@@ -138,6 +138,7 @@ struct AddItemSheet: View {
             HStack {
                 Image(systemName: "magnifyingglass")
                     .foregroundStyle(.secondary)
+                    .accessibilityHidden(true)
                 TextField("Search for a place...", text: $searchQuery)
                     .textFieldStyle(.plain)
                     .autocorrectionDisabled()
@@ -156,6 +157,8 @@ struct AddItemSheet: View {
                         Image(systemName: "xmark.circle.fill")
                             .foregroundStyle(.secondary)
                     }
+                    .minimumHitTarget()
+                    .accessibilityLabel("Clear search")
                 }
             }
             .padding(10)
@@ -373,6 +376,7 @@ private struct PlaceResultRow: View {
                 if isSelected {
                     Image(systemName: "checkmark.circle.fill")
                         .foregroundStyle(.green)
+                        .accessibilityHidden(true)
                 }
             }
             .padding(.vertical, 10)
@@ -380,6 +384,8 @@ private struct PlaceResultRow: View {
             .background(isSelected ? Color.green.opacity(0.1) : Color.clear)
         }
         .buttonStyle(.plain)
+        .accessibilityValue(isSelected ? "Selected" : "Not selected")
+        .accessibilityAddTraits(isSelected ? .isSelected : [])
     }
 
     private var formattedAddress: String? {
@@ -422,6 +428,8 @@ private struct CategoryButton: View {
             )
         }
         .buttonStyle(.plain)
+        .accessibilityValue(isSelected ? "Selected" : "Not selected")
+        .accessibilityAddTraits(isSelected ? .isSelected : [])
     }
 }