curl --request POST \
  --url http://localhost:8080/api/workspaces/{id}/documents \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "title": "<string>",
  "content": "",
  "visibility": "agent-visible",
  "injection": "none"
}
'

{
  "id": "<string>",
  "workspace_id": "<string>",
  "title": "<string>",
  "content": "<string>",
  "visibility": "human-only",
  "injection": "none",
  "created_at": "<string>",
  "updated_at": "<string>"
}