Update version to 4.4 (versionCode 12) for release

Co-Authored-By: Claude Opus 4.6 <[email protected]>

Fix deprecation warnings, edge-to-edge insets, and update dependencies

- Replace deprecated APIs (ClipboardManager, LocalLifecycleOwner, statusBarColor,
  continuation.resume) with modern alternatives
- Suppress unavoidable WebView deprecation warnings (databaseEnabled, setRenderPriority,
  setForceDark, etc.)
- Fix edge-to-edge inset handling: remove double inset padding in WebViewScreen and
  SettingsScreen, properly handle navigation bar insets in bottom bar
- Remove nullable return type from BookmarkDao (Room always returns empty list)
- Add @file:OptIn for StateReducerFlow inheriting StateFlow
- Update AGP to 9.1.0, Gradle to 9.4.0, bump version to 4.3

Co-Authored-By: Claude Opus 4.6 <[email protected]>

Update version to 4.2 (versionCode 10) for release

Co-Authored-By: Claude Opus 4.6 <[email protected]>

Version 4.1 - Fixed StackOverflowError in back button handling

v3.3.6