List Domains

{
  "success": true,
  "data": {
    "domains": [
      {
        "id": "550e8400-e29b-41d4-a716-446655440000",
        "domain": "yourdomain.com",
        "status": "verified",
        "dns_records": [...],
        "created_at": "2026-03-07T12:00:00Z"
      }
    ]
  }
}