- User-facing brand "bike-admin" -> "volundr" (page titles, top bar,
login header, FastAPI title, README/AGENTS). Directory, remote,
BIKE_ADMIN_* env prefix and bike_admin.db filename are unchanged.
- Add deploy/: systemd unit (bike-admin.service) and a production
.env template (env.production.example).
- README: feature list now covers renewal tracking, the due-soon service
state, and the full event-type set.
- AGENTS: add the three hint settings, compute_renewal_due, favicon.svg,
and test_renewals.py to the layouts.