feat: rails style bootkit bin/railiance with quickstart

ansible/ansible.cfg

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+[defaults]
+inventory = ansible/hosts.ini
+interpreter_python = auto
+host_key_checking = False
+retry_files_enabled = False
+stdout_callback = yaml
+timeout = 30
+
+[ssh_connection]
+pipelining = True
+

ansible/hosts.ini.example

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+# Ansible inventory template for Railiance
+
+# Single seed host (first node)
+[seed]
+# 203.0.113.10 ansible_user=ubuntu ansible_become=true
+
+# Optional: control plane / workers (future multi-node)
+#[k3s_master]
+# 203.0.113.11 ansible_user=ubuntu ansible_become=true
+
+#[k3s_workers]
+# 203.0.113.21 ansible_user=ubuntu ansible_become=true
+# 203.0.113.22 ansible_user=ubuntu ansible_become=true
+
+# Combine groups for convenience
+#[k3s:children]
+#k3s_master
+#k3s_workers
+