Got access to Astra on my pro account and decided to start trying to build a mobile game my friend and I have talked about for a while now. inspired by Ray's stream the other night I just kind of riffed a bunch of game concept information with a couple reference images generated by image 2. It's gotten pretty far just vibing and we've got a basic scaffolding of a game with working mechanics in test flight we are iterating on.
My Question: At which point do more "experienced" devs turn this into a spec driven workflow and start using something like the pstack, etc to fine tune this and turn it into a valid game? What plugins/processes do people like to use to turn an starter project like this into a spec?