Streaming

// flip one flag and every apply() flushes immediately.
route async POST report run {
	%res->streaming = true
	foreach ($this->steps AS $i => $step){
		$step->run
		apply(inner: ['#bar' => $i + 1 .' / '. count($this->steps)])
	}
	apply(inner: ['#bar' => 'done'])
}