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/Core/Analytics/AnalyticsManager.swift

@@ -143,9 +143,6 @@ final class AnalyticsManager {
         var props: [String: Any] = ["screen_name": screenName]
         if let properties { props.merge(properties) { _, new in new } }
 
-        #if DEBUG
-        print("[Analytics] screen_viewed: \(screenName)")
-        #endif
         PostHogSDK.shared.capture("screen_viewed", properties: props)
     }