Longer! In Scotland, mostly cool, mine sit on the counter for a couple of months at a time.
I spin them to check if they’re still okay. You spin them on the counter, briefly place a finger to stop them and release. If the yolk is still fluid the egg will start to spin again, and they’re good to use. If the inners have congealed they stop dead, and go in the bin.
Because AI art is shit at this kind of thing. Not incapable of, just absurdly fiddly to get obedience from. It’ll get you 75% of the way there, and then you actually need to know how to edit an image, which is where it lets you down.
Go ahead and try generating images of a family during benediction wearing ear bandages and you’ll find it really struggles with getting that last part right because it’s not typical subject matter.