zegit's `browser tests` (chromedp + CDP virtual authenticator) and
`lighthouse` jobs were github.com-only, so when `ci` was routed to this
runner on 2026-08-31 they stopped running anywhere. Chromium 149 (Alpine
3.23) with font-noto lets both run here; psql lets the lighthouse job
create and drop its own database on ci-postgres instead of migrating the
shared maintenance database from under the integration suite's template.
Verified locally (docker build, amd64): chromium-browser 149.0.7827.53,
psql 18.6, 45 font files, node 24.18.1, still uid 1000.