Add workload KV lane for Nextcloud WebDAV token, URL, and age recovery
escrow at platform/workloads/railiance/backup/offsite-lane. Apply read
policy and OIDC role railiance-backup-workload-kv-read; wire forgejo-backup
to load credentials from OpenBao when env is unset.
Introduce external-secrets-forgejo policy/role, ClusterSecretStore
openbao-forgejo (forgejo namespace), and make openbao-configure-external-secrets-forgejo.
Generate default CA via ssh/config/ca, split composite KUBECTL for role writes,
read pubkey from config/ca, allow warden key_id in roles, prefer production kubeconfig.