Phase 1 (author-only): node provisioning IaC — tofu + cloud-init + Ansible (T-1.1/1.2/1.3)

OpenTofu libvirt module (k3s-dev NAT 10.73.0.0/24, 3x 6GiB/4vCPU VMs, 20G OS +
40G thin data, host-passthrough), cloud-init baseline (k3s/Cilium/Longhorn
prereqs, static net), Ansible k3s-HA + Cilium (kube-proxy replacement, Gateway
API, Hubble; flannel/kube-proxy/Traefik disabled). PM fix: escape ${...} in a
cloud-init template comment (tofu templatefile parse). tofu fmt/init/validate =
Success; ansible --syntax-check + yamllint pass. NOTHING executed (no apply).

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>

infra/ansible/ansible.cfg

@@ -0,0 +1,11 @@
+[defaults]
+inventory = inventory/hosts.ini
+roles_path = roles
+host_key_checking = False
+retry_files_enabled = False
+stdout_callback = yaml
+interpreter_python = auto_silent
+
+[ssh_connection]
+pipelining = True
+ssh_args = -o ControlMaster=auto -o ControlPersist=60s -o StrictHostKeyChecking=accept-new