curl --request POST \
  --url http://localhost:8080/api/workspaces/{id}/projects/{project_id}/phases \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "description": ""
}
'

{
  "project_id": "<string>",
  "name": "<string>",
  "description": "<string>",
  "phase_order": 123,
  "status": "<string>",
  "created_at": "<string>",
  "tasks": []
}