Refs #67
Merged by commander after reviewing Code Queue task codex_1779422774244_1. Adds deploy.json public endpoint/frp/k3s/health source fields and dry-run validation. Follow-up: align deploy.json commit/image desired state with the current DEV runtime before using it as apply truth.
Refs #49
Merged by commander after reviewing Code Queue task codex_1779422762669_1. Adds redacted DB readiness layering and refreshes DEV endpoint/report evidence. Follow-up: deploy/verify the new readiness probe in DEV via standard image CI/CD.