curl --request GET \
  --url https://api.ontora.com/v1/interviews/{interview_id}/graph/status \
  --header 'Authorization: Bearer <token>'

{
  "status": "<string>",
  "conversations_ingested": 123,
  "conversations_total": 123,
  "passages_created": 123,
  "phrases_created": 123,
  "keywords_created": 123,
  "core_chunks_count": 123,
  "error_message": "<string>",
  "started_at": "<string>",
  "completed_at": "<string>"
}