provider-bundle-check: overlay merge + per-DC VIP bands + placement invariants ...

The committee's non-negotiable placement "spine" so the vr1-dc1 render is
machine-checked, not eyeballed. The checker was placement-blind (D-052 bindings
+ mysql=3 only), so any render could silently ship decorative HA.

- --overlay FILE: juju-like merge -> validates the EFFECTIVE deploy input
- --dc vr1-dc0|vr1-dc1: per-DC VIP bands (default dc0 = base; un-param run
  byte-identical to before). Closes the dc1-VIP-outside-the-check gap.
- placement invariants (fire only on a role-separated machines block, self-skip
  on the base bundle): no dangling to:; LXD->control, ceph-osd->storage,
  nova-compute->compute; num_units>=2 spread across that many DISTINCT machines
  (anti-affinity); ceph-osd==storage count, nova-compute==compute count.

Harness 15/15 (7 new behavioral cases); gauntlet ALL GREEN (78); repo-lint 0 fail.
Machines-block overlay merge is confirmed at `juju deploy --dry-run` (VERIFY-LIVE).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VUjEb7onHpdqFHUnio6iVw

Stage-5 dc1: committee review + Fork-1 ruling (D-104 amendment) + BUNDLEFIX-052 ...

Track-2 bundle-render blocker, committee-adjudicated (4 read-only lenses:
Roosevelt-delta / HA-DR / operational-risk / Juju-MAAS-mechanism). Every
load-bearing claim re-verified against the repo before adoption.

- Committee record: docs/audit/committee-20260724-track2-bundle-render.md
- Fork 1 RULED (operator, GA-R5): dedicated 10th per-DC controller VM ->
  D-104 amendment. Capacity gate PASS (measured): 10-node x 2-DC =
  854/1024 GiB (83%, FIT, 170 GiB headroom);
  docs/audit/stage5-controller-capacity-20260724.txt
- BUNDLEFIX-052: removed an orphaned `bindings:` block absorbed into
  ceph-rbd-mirror (clobbered its D-108 replication bindings + injected a
  phantom `dashboard` endpoint -> juju deploy reject). provider-bundle-check PASS.
- CURRENT-STATE Stage-4 bullet updated same change set (GA-R1/C1).

No cloud state mutated. Fork 2/3 = OPS committee-unanimous, executed under gating.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VUjEb7onHpdqFHUnio6iVw