curl --request GET \
  --url https://api.keebai.com/v1/knowledge/tree \
  --header 'Authorization: Bearer <token>'

{
  "items": [
    {
      "id": "<string>",
      "title": "<string>",
      "position": 123,
      "path_cache": "<string>",
      "children": "<array>",
      "parent_id": {},
      "created_at": "<string>",
      "updated_at": "<string>"
    }
  ]
}