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/Services/InsightsExporter.swift

@@ -8,6 +8,7 @@
 #if DEBUG
 import SwiftUI
 import UIKit
+import os.log
 
 /// Exports insights view screenshots for App Store marketing
 @MainActor
@@ -28,7 +29,12 @@ class InsightsExporter {
 
         // Clean and create export directory
         try? FileManager.default.removeItem(at: exportPath)
-        try? FileManager.default.createDirectory(at: exportPath, withIntermediateDirectories: true)
+        do {
+            try FileManager.default.createDirectory(at: exportPath, withIntermediateDirectories: true)
+        } catch {
+            AppLogger.export.error("Failed to create insights export directory: \(error)")
+            return nil
+        }
 
         var totalExported = 0
 
@@ -95,7 +101,11 @@ class InsightsExporter {
         if let image = renderer.uiImage {
             let url = folder.appendingPathComponent("\(name).png")
             if let data = image.pngData() {
-                try? data.write(to: url)
+                do {
+                    try data.write(to: url)
+                } catch {
+                    AppLogger.export.error("Failed to write insights image '\(name)': \(error)")
+                }
             }
         }
     }