docs: update CHANGELOG Unreleased section with current backlog

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: sprobst76

CHANGELOG.md

@@ -8,9 +8,11 @@ und dieses Projekt folgt [Semantic Versioning](https://semver.org/lang/de/).
 ## [Unreleased]
 
 ### Geplant
+- Code-Qualität: Formatier-Utilities deduplizieren (lib/utils/format_utils.dart)
 - Cloud-Backup (Google Drive / iCloud)
 - Mehrsprachigkeit (i18n / l10n)
 - iOS Geofence-Parität
+- Apple Watch / Wear OS Companion
 
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