TBH the average user would be confused if their autoscaling workers were "online and billed for" if some random npm package or a coding accident had "background

TBH the average user would be confused if their autoscaling workers were "online and billed for" if some random npm package or a coding accident had "background behavior". Firing off a background task into something similar to AWS SQS is really the right way for this scenario to be handled.