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/BiometricAuthManager.swift

@@ -102,7 +102,9 @@ class BiometricAuthManager: ObservableObject {
             }
             return success
         } catch {
+            #if DEBUG
             print("Authentication failed: \(error.localizedDescription)")
+            #endif
             AnalyticsManager.shared.track(.biometricUnlockFailed(error: error.localizedDescription))
 
             // If biometrics failed, try device passcode as fallback
@@ -126,7 +128,9 @@ class BiometricAuthManager: ObservableObject {
             isUnlocked = success
             return success
         } catch {
+            #if DEBUG
             print("Passcode authentication failed: \(error.localizedDescription)")
+            #endif
             return false
         }
     }
@@ -146,7 +150,9 @@ class BiometricAuthManager: ObservableObject {
 
         // Only allow enabling if biometrics are available
         guard context.canEvaluatePolicy(.deviceOwnerAuthenticationWithBiometrics, error: &error) else {
+            #if DEBUG
             print("Biometric authentication not available: \(error?.localizedDescription ?? "Unknown")")
+            #endif
             return false
         }
 
@@ -164,7 +170,9 @@ class BiometricAuthManager: ObservableObject {
 
             return success
         } catch {
+            #if DEBUG
             print("Failed to enable lock: \(error.localizedDescription)")
+            #endif
             return false
         }
     }