VERY cool. I wish you could make this work for steam deck (and friends) though.
Have a look at Decky loader and Emudeck.
And can just port the emulator to wasm, and have people able to run their own roms. That would mean you're suddenly retroactively making all of those ps2 games platform agnostic.
This just makes one game playable, by artificially limiting the emulator to running this one game. If you're recreating a ps2 in software (which this project is), you should be able to run any game.
there's an actual sku of one lenovo handheld that officially runs SteamOS, i assume that's what GP is referring to