Release v1.3.0: Multi-Device Sync with Deletion Tracking

New Features:
- Multi-Device Sync with deletion tracking (prevents zombie notes)
- Server deletion via swipe gesture with confirmation dialog
- E-Tag performance optimization (~150ms vs 3s for no-change syncs)
- Markdown Auto-Sync toggle (unified Export + Auto-Import)
- Manual Markdown sync button for performance control
- Server-Restore modes (Merge/Replace/Overwrite)

Technical Implementation:
- DeletionTracker model with JSON persistence
- Intelligent server checks with E-Tag caching
- Deletion-aware download logic
- Two-stage swipe deletion with Material Design dialog
- Automatic Markdown import during sync
- YAML frontmatter scanning for robust file deletion

Thanks to Thomas from Bielefeld for reporting the multi-device sync issue!

Compatible with: v1.2.0-v1.3.0

fastlane/metadata/android/de-DE/changelogs/8.txt

@@ -0,0 +1,12 @@
+v1.3.0 - Multi-Device Sync
+
+NEUE FEATURES:
+• Multi-Device Sync mit Deletion Tracking (keine Zombie-Notizen)
+• Wisch-Geste zum Server-Löschen (verhindert Duplikate auf anderen Geräten)
+• E-Tag Performance-Optimierung (~150ms statt 3s)
+• Markdown Auto-Sync Toggle (Export + Import vereint)
+• Manueller Markdown-Sync Button
+• Server-Wiederherstellung Modi (Merge/Replace/Overwrite)
+
+Dank an Thomas aus Bielefeld!
+Kompatibel: v1.2.0-v1.3.0