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>

Reflect Watch App/ContentView.swift

@@ -22,8 +22,9 @@ struct ContentView: View {
                 // Show voting UI
                 VStack(spacing: 8) {
                     Text("How do you feel?")
-                        .font(.system(size: 16, weight: .medium))
+                        .font(.headline)
                         .foregroundColor(.secondary)
+                        .accessibilityAddTraits(.isHeader)
 
                     // Top row: Great, Good, Average
                     HStack(spacing: 8) {
@@ -87,11 +88,14 @@ struct AlreadyRatedView: View {
         VStack(spacing: 12) {
             Text(mood.watchEmoji)
                 .font(.system(size: 50))
+                .accessibilityHidden(true)
 
             Text("Logged!")
-                .font(.system(size: 18, weight: .semibold))
+                .font(.title3.weight(.semibold))
                 .foregroundColor(.secondary)
         }
+        .accessibilityElement(children: .combine)
+        .accessibilityLabel(String(localized: "\(mood.strValue) mood logged"))
     }
 }
 
@@ -104,7 +108,7 @@ struct MoodButton: View {
     var body: some View {
         Button(action: action) {
             Text(mood.watchEmoji)
-                .font(.system(size: 28))
+                .font(.title2)
                 .frame(maxWidth: .infinity)
                 .frame(height: 50)
                 .background(mood.watchColor.opacity(0.3))
@@ -112,6 +116,8 @@ struct MoodButton: View {
         }
         .buttonStyle(.plain)
         .accessibilityIdentifier(AccessibilityID.Watch.moodButton(mood.strValue))
+        .accessibilityLabel(String(localized: "Log \(mood.strValue) mood"))
+        .accessibilityHint(String(localized: "Double tap to log your mood as \(mood.strValue)"))
     }
 }