The canvas hides the OS cursor (CursorIcon::None, which winit turns into
ShowCursor(FALSE) on Windows) and draws its own crosshair, so Windows
Magnifier's "follow the mouse pointer", screen readers, recorders and
remote desktops lose the pointer there. View > Accessibility > Show System
Cursor (ui.toggle.systemcursor, ui.set {"systemCursor": true}, or
CADCRAFT_SYSTEM_CURSOR=1 at startup) keeps a system crosshair visible at
the centre of the drawn one.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
