The APK served from the pairing QR predated today's scanner fixes, so
the download-then-scan flow still hit the laggy scanner. Bumps the
version so phones update in place, refreshes the served artifact
(signed v1+v2+v3, verified), and adds the archi-dev-box deploy handoff.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>