curl --request DELETE \
  --url https://api.notifique.dev/v1/whatsapp/instances/{instanceId} \
  --header 'Authorization: Bearer <token>'

{
  "success": true,
  "data": {
    "instanceId": "clxx...",
    "status": "DELETED"
  },
  "message": "Instance removed. Logs and statistics are preserved."
}