Right now there is no way to clear out local insts unless you are savy enough to know they are stored in the browser's store / IndexedDB and clear it out there. The list of local insts can continue to balloon this way and it would make a lot of sense to be able to delete these from the BIOS dialog.

You could theoretically add this behaviour for studio insts as well (assuming that issue #412 is implemented) however those are easy to manipulate from the auth portal in each record at the moment where as local insts obviously do not exist in the record system.

I'm not sure what the best way to surface this in the dialog would be but here's a mockup of a quick idea.