Where are Bezels from the Bezel Project saved and how is it realized in Launchboxes Config?

[Darkcloud]

I basically want to do two things:

1. Use the Bezels with the Genesis GX Wide Core since this is just my default genesis Core even if I don't use widescreen.

2. Move the Bezels and the Config for Retroarch to the Steamdeck to use it there. With the Additional Question: How well does it work on 16:10 screens, do I just have to change the scale of the shader to fit the Bezels to the proper size for the black bars?

[Darkcloud]

I almost got it working: The config Files are in the config folder under the coresponding cores, Either a game config file if the game has a specific bezel or a system config file for the default system bezel. The bezels are in the bezels folder. Only Problem ":/" as the root folder doesn't seem to work with  the app image version of retroarch.  Or I havn't found the folder it uses as root. So I would have to set the bezels for each game manualy. Doable but not that great.