compose.yaml: host networking (bridge+embedded-DNS broke rooted-name lookups), :8443 via ca.json address, image digest-pinned; init-stepca.sh: scaffold + ECDSA-P256 intermediate signed by /root/ca-root fleet root (verified), ACME provisioner, managed password. Directory serving RFC8555 on tailnet. OPEN: step-ca validation GET fails instantly with zero dial attempts (authz says could-not-connect) — bisected caps, read_only, bridge vs host, container DNS. Debug continues next run (GODEBUG=netdns=2 + strace plan). https://projects.knownelement.com/issues/800
test-root container pilot (loopback+bridge binds); HTTP-01 issuance proven; phase design for prod ACME/k8s/SSH on t/327#2. https://community.turnsys.com/t/327/2