Update Workflow

curl -X PUT "https://api.clustr-ai.com/api/public/workflows/7f1e2a33-..." \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"name": "Hot accounts (renamed)"}'

{
  "success": true,
  "data": { "workflow": { "id": "7f1e2a33-...", "name": "Hot accounts (renamed)" } }
}

{
  "success": false,
  "error": { "message": "workflow not found", "code": "NOT_FOUND" }
}