RailianceThreePhoenix: 3-node HA Kubernetes cluster with embedded etcd, Longhorn distributed storage, PostgreSQL HA (repmgr + Pgpool-II), and Phoenix CronJob for weekly node rotation to prevent configuration drift. ThreePhoenixWorkplan: 7-phase implementation plan from blank Ubuntu nodes to self-healing Gitea cluster with monitoring and alert silencing. Also adds CLAUDE.md with Custodian State Hub session protocol. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>