curl -X PATCH "https://api.tallentu.com/v1/jobs/job_123/applications/user_123/stage" \
  -H "Authorization: Bearer <token>" \
  -H "Content-Type: application/json" \
  -d '{
    "stage_id": "col_456",
    "note": "Promovido para entrevista técnica"
  }'

{
  "success": true
}