And sometimes the void talks back

Egui has this limit. Possibly related to GPU texture limits on many GPUs. In any case, we should at least display a shrunk image and not panick the thread. And that is what I did on the unstable branch yesterday.

This land was green and good until the crystal cracked

Ok I put a possible fix on unstable. Your example gives me 403 forbidden so could you test the unstable branch and see if it fixed?

Ok we need to have some safety catch code that refuses to display if it is too big.