feat(v1.4.0): Checklists feature + WiFi permission cleanup

Features:
- Interactive checklists with tap-to-check, drag & drop sorting
- GitHub-flavored Markdown export (- [ ] / - [x])
- FAB menu for note type selection

Fixes:
- Improved Markdown parsing (robust line-based content extraction)
- Better duplicate filename handling (ID suffix)
- Foreground notification suppression

Privacy:
- Removed ACCESS_WIFI_STATE and CHANGE_WIFI_STATE permissions
  (SSID binding was never used, app only checks connectivity state)

Code Quality:
- Fixed 7 Detekt warnings (SwallowedException, MaxLineLength, MagicNumber)

fastlane/metadata/android/en-US/full_description.txt

@@ -2,16 +2,15 @@ Simple Notes Sync is a minimalist note-taking app with WebDAV synchronization.
 
 KEY FEATURES:
 
-• Create and edit simple notes
+• Create text notes and checklists
+• Checklists with tap-to-check, drag & drop, swipe-to-delete
 • WebDAV synchronization with your own server
 • Multi-device sync (phone, tablet, desktop)
 • Markdown export for Obsidian/desktop editors
+• Checklists export as GitHub-style task lists
 • Automatic synchronization on home WiFi
 • Configurable sync interval (15/30/60 minutes)
-• Transparent battery usage display
 • Material Design 3 with Dynamic Colors (Android 12+)
-• Swipe-to-delete with server sync
-• Server backup & restore (Merge/Replace/Overwrite)
 • Fully usable offline
 • No ads, no trackers