ft-screens --no-vr runs without SteamVR and leaves the input relay alone;
--control names its control socket; "toplevels" lists KWin's windows with
their titles and sizes; "input" feeds pointer events as if from a panel.
screens/test/headless.sh starts it with a bare nested KWin next to the
running desktop, and loads KWin scripts, runs apps, and takes screenshots.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
