[Arkcon]

Maybe the goal of the ceasefire treaty is to get the AI to stop targeting your planets and ships? Minefields and warp point sattelites would still target incoming ships. And you wouldn't be allowed to target planets or ships. But what happens if you cross paths?

If the duration is short, say 3 turns, you couldn't exploit the AI too much -- your ships couldn't get far. But you could build up some small ships and weapon platforms. Is that too exploitative? I dunno. One destroyer or light cruiser at each planet?

Against a human, if they suspect you're going to abuse it, they'd just refuse. Unless they were real trusting and wanted a cease fire. Or planned to abuse it worse than you...and leave you to wonder which one is going to happen.