Is your feature request related to a problem?

Some of the lessons in my tutorial are about unit testing, where I do not need a ui - everything happens in the terminal

Describe the solution you'd like.

It'll be great if I could set preview false and terminal open so that'll the configuration for that lesson

Describe alternatives you've considered.

I wrote an instruction for the student to open the terminal and make the preview as small as possible - it's not so cool, as it keeps showing the progress indicator of server starting - here it is in my tutorial:

You can try it yourself at:
https://learn.remult.dev/in-depth/9-testing/1-introduction

Additional context

No response