Add option to remove unmapped reads to save storage. github.com/nf-core/viralmetagenome/pull/312

I saw your reply to my comment on this. Tests are still failing, so you problaby have other things to focus on, but just let me know if you think we (me and Claude) overinterpreted the seriousness of your

ext.args2

and I'll drop that and give you an approva. I don't want to stall you.

yes, but you do make a good point on that there we aren’t testing this setup meticulously. So adding two subworkflow test files to validate the logic.