v1.1 polish: accessibility, error logging, localization, and code quality sweep

- Wrap 30+ production print() statements in #if DEBUG guards across 18 files
- Add VoiceOver labels, hints, and traits to Watch app, Live Activities, widgets
- Add .accessibilityAddTraits(.isButton) to 15+ onTapGesture views
- Add text alternatives for color-only indicators (progress dots, mood circles)
- Localize raw string literals in NoteEditorView, EntryDetailView, widgets
- Replace 25+ silent try? with do/catch + AppLogger error logging
- Replace hardcoded font sizes with semantic Dynamic Type fonts
- Fix FIXME in IconPickerView (log icon change errors)
- Extract magic animation delays to named constants across 8 files
- Add widget empty state "Log your first mood!" messaging
- Hide decorative images from VoiceOver, add labels to ColorPickers
- Remove stale TODO in Color+Codable (alpha change deferred for migration)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Shared/ReflectApp.swift

@@ -12,6 +12,10 @@ import WidgetKit
 
 @main
 struct ReflectApp: App {
+    private enum AnimationConstants {
+        static let deepLinkHandlingDelay: TimeInterval = 0.3
+    }
+
     @Environment(\.scenePhase) private var scenePhase
     @UIApplicationDelegateAdaptor(AppDelegate.self) var appDelegate
 
@@ -83,7 +87,7 @@ struct ReflectApp: App {
                     }
                     if let url = AppDelegate.pendingDeepLinkURL {
                         AppDelegate.pendingDeepLinkURL = nil
-                        DispatchQueue.main.asyncAfter(deadline: .now() + 0.3) {
+                        DispatchQueue.main.asyncAfter(deadline: .now() + AnimationConstants.deepLinkHandlingDelay) {
                             handleDeepLink(url)
                         }
                     }