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/Views/LockScreenView.swift

@@ -1465,6 +1465,12 @@ struct GlassButton: View {
 // MARK: - Main Lock Screen View
 
 struct LockScreenView: View {
+    private enum AnimationConstants {
+        static let contentAppearDuration: TimeInterval = 0.8
+        static let contentAppearDelay: TimeInterval = 0.2
+        static let authenticationDelay: Int = 800 // milliseconds
+    }
+
     @Environment(\.colorScheme) private var colorScheme
     @ObservedObject var authManager: BiometricAuthManager
     @State private var showError = false
@@ -1714,13 +1720,13 @@ struct LockScreenView: View {
             Text("Unable to verify your identity. Please try again.")
         }
         .onAppear {
-            withAnimation(.easeOut(duration: 0.8).delay(0.2)) {
+            withAnimation(.easeOut(duration: AnimationConstants.contentAppearDuration).delay(AnimationConstants.contentAppearDelay)) {
                 showContent = true
             }
 
             if !authManager.isUnlocked && !authManager.isAuthenticating {
                 Task {
-                    try? await Task.sleep(for: .milliseconds(800))
+                    try? await Task.sleep(for: .milliseconds(AnimationConstants.authenticationDelay))
                     await authManager.authenticate()
                 }
             }