Thanks for the suggestion. Unfortunately I keep getting an error “Could not find any non-steam apps”. I suspect this is because this is a streamed game and not locally installed.
I’ve now determined that it’s not just non steam games, it appears the Decky <-> SteamGridDB plugin is not working as it should. I’ve restarted / reinstalled both a number of times now, but it just spins while trying to load up any images. The manage screen does actually work, so I may just hang on to the plugin for that reason alone, since manually doing it through each screen in Steam is painful.
Appreciate the help regardless. With anything new there’s always the question of “is it a newbie thing and I’m doing it wrong or …”?