- Closing the window hides it to the system tray; tracking and history
recording continue. Quit from the tray, the menu or Ctrl+Q.
- Show the window when MTGA starts a new Player.log, detected with OS
file notifications on the log folder (QFileSystemWatcher), not polling.
- Single instance over a local socket: launching again shows the
running window (or stays hidden with --background).
- Menu options for background mode, show-on-launch and start at login
(XDG autostart on Linux, HKCU Run key on Windows); --background flag.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>