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/TeamPickerView.swift

@@ -44,6 +44,7 @@ struct TeamPickerView: View {
             HStack {
                 Image(systemName: "magnifyingglass")
                     .foregroundStyle(Theme.textMuted(colorScheme))
+                    .accessibilityHidden(true)
 
                 TextField("Search teams...", text: $searchText)
                     .textFieldStyle(.plain)
@@ -55,6 +56,8 @@ struct TeamPickerView: View {
                         Image(systemName: "xmark.circle.fill")
                             .foregroundStyle(Theme.textMuted(colorScheme))
                     }
+                    .minimumHitTarget()
+                    .accessibilityLabel("Clear search")
                 }
             }
             .padding(Theme.Spacing.sm)
@@ -76,7 +79,7 @@ struct TeamPickerView: View {
                     Spacer()
 
                     Button("Clear all") {
-                        withAnimation(Theme.Animation.spring) {
+                        Theme.Animation.withMotion(Theme.Animation.spring) {
                             selectedTeamIds.removeAll()
                         }
                     }
@@ -102,7 +105,7 @@ struct TeamPickerView: View {
     }
 
     private func toggleTeam(_ team: Team) {
-        withAnimation(Theme.Animation.spring) {
+        Theme.Animation.withMotion(Theme.Animation.spring) {
             if selectedTeamIds.contains(team.id) {
                 selectedTeamIds.remove(team.id)
             } else {
@@ -139,6 +142,7 @@ private struct TeamCard: View {
                             .font(.title3)
                             .fontWeight(.bold)
                             .foregroundStyle(.white)
+                            .accessibilityHidden(true)
                     }
                 }
 
@@ -167,6 +171,8 @@ private struct TeamCard: View {
             )
         }
         .buttonStyle(.plain)
+        .accessibilityValue(isSelected ? "Selected" : "Not selected")
+        .accessibilityAddTraits(isSelected ? .isSelected : [])
     }
 
     private var teamColor: Color {