- Auto-detect installed .desktop filename (com.blitzfc.qbz.desktop,
qbz.desktop, qbz-nix.desktop) instead of hardcoding
- Run update-desktop-database after register/deregister so xdg-open
and browsers pick up the MIME association immediately
- Fix v2_check_qobuzapp_handler to match all known desktop filenames
- Align StartupWMClass to com.blitzfc.qbz across all packaging formats
- Add StartupNotify=true to Arch/AUR/Snap desktop files
Fixes browser URI handler not working for .deb users (Discussion #44)