Part 6 to me seems always totally useless.

Whenever I let these tools look at existing repos they are too influenced by what's already there.

I could even say "feel free to completely refactor or rewrite anything" and they'll still just do small performative changes.

I've now changed my workflow to only using AI for prototyping and rewriting by hand once I can see something is viable. Takes longer but the results are always much better.

I don’t have those problems

You have to build your architecture modularly so you’re never having to reason about more than the schema and api-contracts for IPC