Supersedes the part-4 bookend, which closed with the cutover blocked.
Office1 holds zero dc0 machines; the per-DC region holds all ten Ready with
shapes exact to D-121 Option C. Four named gates green: topology 40/0,
power key 9/0, role tags 0/0/0, plane IPAM 24/0.

Ledger at 278 lines, under the 300 cap. Gauntlet ALL GREEN (92), repo-lint
0 fail.

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