Fix Preferences window being unreachable in 1.8.0: BusyMirror is LSUIElement
(accessory), so it never gets the standard app menu that the automatic
Settings scene's Cmd+, / SettingsLink depend on. Replaced Settings{} with a
plain Window opened via openWindow(id:) -- the same mechanism already used
for the main window -- and added a "Preferences..." item to the menu bar
dropdown as a second, more discoverable entry point.
All unit tests pass.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
tomas.kracmarandClaude Sonnet 5
39c5cba237