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>

.claude/settings.local.json

@@ -46,7 +46,11 @@
       "WebFetch(domain:swiftpackageindex.com)",
       "WebFetch(domain:posthog.com)",
       "WebFetch(domain:raw.githubusercontent.com)",
-      "Bash(swift package add-dependency:*)"
+      "Bash(swift package add-dependency:*)",
+      "WebFetch(domain:www.hackingwithswift.com)",
+      "WebFetch(domain:forums.developer.apple.com)",
+      "WebFetch(domain:www.codegenes.net)",
+      "WebFetch(domain:medium.com)"
     ]
   }
 }