You could script this in with a time database, illustrations, and appropriate harness, tests, and editing passes. It's a massive problem with human authors too, which is why they do a lot of lorekeeping and editing, so the AI should be afforded the same tools if we are debating human level ability.

I agree on the one-shot (which is not a fair comparison because nobody oneshots a good story), but I'm not convinced this part hasn't reached AGI already.