Per-DC VIP overlay for the vr1-dc1 proxy-method deploy (phase-4 Step 4): re-homes
the 11 API-service VIPs from bundle.yaml's vr1-dc0 bands into vr1-dc1's measured
bands (provider-public 10.12.4->64, metal-admin 10.12.8->68, metal-internal
10.12.12->72; host octets .50-.60 unchanged), sourced from lib-net vr1-dc1
PLANE_NAME. Base bundle.yaml stays the vr1-dc0 source of truth; overlay applied
only for the dc1 deploy. YAML valid (11 apps), repo-lint 0 fail.

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