Stamp single-user-cluster last-reviewed to 2026-04-01 after verifying
Tailscale ACLs and kubeconfig distribution. Add aspirational how-to card
documenting what PCI DSS evidence collection would look like (CCW,
artifacts, Drata workflow). Link from existing review process card.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
