feat: Add HA Kubernetes cluster with Terraform + Ansible

- 3x CX23 control plane nodes (HA)
- 4x CX33 worker nodes
- k3s with embedded etcd
- Hetzner CCM for load balancers
- Gitea CI/CD workflows
- Backblaze B2 for Terraform state

ansible/generate_inventory.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+
+import json
+import os
+import subprocess
+import sys
+from pathlib import Path
+
+from jinja2 import Environment, FileSystemLoader
+
+
+def get_terraform_outputs():
+    result = subprocess.run(
+        ["terraform", "output", "-json"],
+        cwd="../terraform",
+        capture_output=True,
+        text=True,
+    )
+
+    if result.returncode != 0:
+        print(f"Error running terraform output: {result.stderr}")
+        sys.exit(1)
+
+    return json.loads(result.stdout)
+
+
+def main():
+    outputs = get_terraform_outputs()
+
+    data = {
+        "control_plane_ips": outputs["control_plane_ips"]["value"],
+        "worker_ips": outputs["worker_ips"]["value"],
+        "private_key_file": outputs["ssh_private_key_path"]["value"],
+    }
+
+    env = Environment(loader=FileSystemLoader("."))
+    template = env.get_template("inventory.tmpl")
+    inventory = template.render(**data)
+
+    Path("inventory.ini").write_text(inventory)
+    print("Generated inventory.ini")
+
+
+if __name__ == "__main__":
+    main()