curl --request GET \
  --url https://workflows.eachlabs.run/api/v1/categories \
  --header 'X-API-Key: <api-key>'

{
  "categories": [
    {
      "slug": "image-generation",
      "label": "Image Generation",
      "description": "Workflows for generating images",
      "is_default": true,
      "created_at": "2025-12-01T10:00:00Z",
      "updated_at": "2025-12-01T10:00:00Z"
    },
    {
      "slug": "text-processing",
      "label": "Text Processing",
      "description": "Workflows for processing text",
      "is_default": true,
      "created_at": "2025-12-01T10:00:00Z",
      "updated_at": "2025-12-01T10:00:00Z"
    }
  ]
}