Stage 0 requires that kiosk setup can be reproduced from documentation, and
there was none. Cover the address, a single-launcher Chromium command with a
persistent profile, a systemd user unit, pairing and the fixed 180-day device
credential, what the screen does through each kind of outage, the known offline
cold-start limit, and why a second launcher produces duplicate windows.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
