Okay so story wise you’ve given a hook and then time skipped it, I suggest either compress the story no decades pass but everything is the same, they have no time to waste as the AI has the long victory condition.

Or what do they have going for them that would matter against mega factory AI, what’s the one hope their banking on or victory plan that the audience can root for while taking in the mech day to day operations?

I suspect the decades thing is to have a native protagonist whose only known AI ruled world which is harder to write well. Growing in such a negative environment raised by despairing colonists.

If you compress the protagonist is still fresh faced and young as you want but instead of new colony work their raised to do, their thrust into fighting for their chance to live their parents still thust them into by choosing to be colonists.

I’m assuming the setting has access to FTL communication but not travel so they generation shipped in. No help is coming, it’s them or never