creaminstaller works under linux and can find steam games inside your home folder (not sure about elsewhere) if you run it as a third party exe in steam with proton

oops sorry

You can even get uncracked game folders from cs.rin.ru and then crack them yourself (assuming only steam drm) using something like „steam auto cracker“ or whatever that tool is called.

You’d just copy them over when it’s finished. First into a shared folder that can be accessed both from inside the vm and outside in linux, and then from there to wherever you’d store your games.

Some repacks (fitgirl and dodi and sometimes others) occasionally decide not to install ever in any linux system with wine or proton (they’ll crash at some point in the installation), and then you’ll have to install them first in a windows vm and then move them over to linux. It’s not really a rare issue, like 50/50, depends on the repack and its compression settings and just the luck of the day. Games that are already installed which you’re just moving over work perfectly 99% of the time. I recommend lutris.

all three filter lists are fetched once and kept in memory when the extension is initialized (from what i can tell this happens when the browser starts), and then that local copy is used to match URLs.