列出 GPU 节点

curl -s http://<pin-host>:8001/v1/gpu-nodes \
  -H "Authorization: Bearer $ARIA_PIN_KEY"

{
  "items": [
    {
      "id": "gn_a1b2c3d4",
      "name": "node-01",
      "ip": "10.0.1.10",
      "ssh_port": 22,
      "ssh_user": "ubuntu",
      "spec": "A100-80G x8",
      "labels": ["training", "a100"],
      "status": "active",
      "agent_count": 2,
      "created_at": "2024-05-01T12:00:00Z",
      "updated_at": "2024-05-10T08:30:00Z"
    }
  ]
}