On desktops with no tray host (stock GNOME), "Keep running in the tray"
hid the window with no icon to bring it back. Ask the desktop app
(has_tray_host); without a tray, say so, focus "Quit when I close the
window", and offer "Keep running in the background" as the secondary
choice. Older desktop builds keep the current dialog.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5