So I'm new to the game and having fun (v4.054), but I can't figure out how to disable automatic harvester building. I'm establishing forward bases (often temporary) which are heavily contested or insecure (force fields keep the command center safe), but the AI still comes through regularly and takes out the harvesters. I might be making a net positive income, and I could unlock exo-fields to protect them, I know, but is there a way to just disable the harvester autobuild on certain planets?
I have the sense I'm missing something obvious. Thanks.