The previous commit (c1f5dc8) touched docs/audit/ without the paired
CURRENT-STATE update that GA-R1 amendment C1 requires, so repo-lint L10 failed
on it. Owned rather than silently amended: the commit is pushed, so this is a
fix-forward.

The measurement genuinely belongs in CURRENT-STATE under amendment C2. The
Stage-5 bootstrap entry has carried the hard ordering caveat -- bootstrap fetches
the juju agent stream and juju/juju-db snaps pre-apt, outside the apt proxy, so
it works ONLY while the dc1 edge egress is open -- but it carried no measurement
of whether egress actually IS open. It now does, probed from the dc1 rack with
--noproxy so an apt-cacher hit could not fake it: streams.canonical.com/juju/tools/
returns 200, api.snapcraft.io answers, archive.ubuntu.com 200, ping 1.1.1.1 0%
loss, default route via 10.12.64.1.

Stated with its shelf life: re-probe immediately before bootstrap, because the
D-135/D-107 narrowing is the closing mutation and nothing prevents it landing
first.

Revert: git revert this commit; the edit is additive.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HvCyrwvYTTcDYnRErfMsNf