The Fedora and CentOS Stream workspace jobs failed TLS to pypi.org,
registry.npmjs.org and repo.packagist.org (CERTIFICATE_VERIFY_FAILED,
curl error 7). package-frontend/ca.sh put the frontend CA into the Arch
anchor dir /etc/ca-certificates/trust-source/anchors, which p11-kit on
the RedHat family never reads.
Probing for the anchor dir does not fix it: with-ca-trust.sh creates
both /etc/pki/ca-trust/source/anchors and
/etc/ca-certificates/trust-source/anchors on every update-ca-trust host,
so the probe in registry-ca.sh already picks the RedHat dir on a reused
Arch runner. Both scripts now install into both dirs, rebuild only when
one of them changed, and take CA_ROOT so unit tests run them against a
fake root.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>