Session close 2026-08-06/07 (GA-R4 bookend): phase-03 Step 3.4 G3 + per-DC Tailscale rulings & .7 VMs ...

Bounded ledger summary + sweep (queued-findings-20260807, O1-O5) + CURRENT-STATE
tailscale-build status + node-vm harness reconcile (11/66 -> 12/72, red gate that
my substrate commits caused by not re-running the gauntlet -- the 2026-07-30 lesson
repeated). Rotated the 2026-08-03 close to archive (ledger 298 < 300).

Session delivered: Step 3.4 G3 domain-manager probe (built + live PASS, closes the
last phase-03 exec item); Decision C (Horizon reconciled to VR1, Step 3.3 splits to
its own tailnet-gated row); D-129(iii) amendment rulings a-d (dedicated .7 VM / STAR
/ single-HA-pinned / SNAT-on, both DCs) + D-134 octet .7 + D-107 citation DOCFIX;
site-tailscale.sh tooling; the .7 subnet-router VMs applied + MACs pinned on both
DCs (dc0 tailscale; dc1 region + tailscale). Headscale-side join deferred (no
control-plane access); MAAS commission/deploy/carve + dc1 region setup owed.

Gates: repo-lint 0 fail; gauntlet ALL GREEN (101). Memory: +ipv6-primary-posture
(drift-prevention, operator-directed) + instrument-currency #19.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Fg98z7QyzwYUs8fsWCn728