Is your feature request related to a problem?

Today, the actual lesson is a combination of files from the template and from the lesson itself. When I use vs code - or when I build astro typescript files - the build fails, because the template may refer to files that exist only on the lesson and vice versa.

I wish there was a way to validate that.

Describe the solution you'd like.

One "dummy" thought, is a cli command to "build" all the lessons with their files and template files into a temp folder and run typescript build there - to validate that all is ok

Describe alternatives you've considered.

The other way I can think of is duplicating many files - but that's maintanance hell.

Additional context

Love this project