Session bookend (successor-landed): G12 dc1-authoring session disconnected mid-item-3 ...

Drop-state recorded, not delivered: dc1 vars + substrate root + lib-net dc1
arm authored UNCOMMITTED in tree; gauntlet 6/76 FAILED (six harnesses still
assert the retired vr1-dc1 fail-loud arm -- capture in docs/audit/). G12 row
updated same-commit (GA-R1/C1). Working-tree authoring intentionally left
uncommitted pending harness reconcile.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GksWgeVyXqhrojhKTiS8J5

G12 dc1: apex confirm-free captured; dc-rack-mgmt-import gains per-site (--site) dc1 support ...

Confirm-free vs live apex (read-only): dc1 planes already assigned+consistent,
transit 172.31.0.4/30 + rack 10.12.68.2 free, uplink 172.30.3.0/24 registered.
Importer harness 117/117; live dc1 dry-run preflight PASS (captures committed).
The apex --commit remains an operator-gated step.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VifVpH3XQQxQz8NQ1VxNau