dc-mirror.sh shipped (D-135 item 1): per-DC apt+UCA mirror, harness 18/18, gauntlet 77 ALL GREEN ...

Site-keyed (dc0/dc1 MEASURED rows), check/install/sync; net layer = D-134
utility .4 alias + default route via the DC edge (egress path MEASURED
working; edge DNS answers). debmirror GPG-verified jammy triple + UCA
caracal, nginx on the utility address, daily timer, niced/idle-IO. Install
fails loud on missing packages with the exact apt line (net-first ordering
resolves the no-egress chicken-and-egg). Gauntlet capture + CURRENT-STATE
same-commit.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VUjEb7onHpdqFHUnio6iVw