Captures the 10-PR staging→main cutover: what shipped, the three new
Railway prod env vars (PROVISION_SHARED_SECRET / EC2_VPC_ID /
CP_BASE_URL), and the sharp edge for existing tenants — their
containers pre-date PR #53 so they still need MOLECULE_CP_SHARED_SECRET
added manually (or a re-provision) before the new CPProvisioner's
outbound bearer works.
Also includes a post-deploy verification checklist and rollback plan.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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