I've been able to encode Outside-in Test Driven Development into a repeatable workflow. Claude Code follows it to a T, and I've gotten great results. I've written about it more here, and created a repo people can use out of the box to try it out:

https://www.joegaebel.com/articles/principled-agentic-softwa... https://github.com/JoeGaebel/outside-in-tdd-starter