How to: Assign default core to specific folders

I’ve found myself accidentally opening PS1 games with the Sega CD BIOS.

Because CHD can be any system, I have to choose from a few cores each time.

But the current folder they’re contained in are all one system.

Is it possible to force a sub-directory to always open with a specific core?

I know I can scan content to generate a system playlist, but I’m more comfortable with browsing my folders, because they’re all organized and nested. In essence, my folder structures are already predefined playlists.

Cheers