You can always tell claude to use red-green-refactor and that really is a step-up from "yeah don't forget to write tests and make sure they pass" at the end of the prompt, sure. But even better, tell it to create subagents to form red team, green team and refactor team while the main instance coordinates them, respecting the clean-room rules. It really works.
The trick is just not mixing/sharing the context. Different instances of the same model do not recognize each other to be more compliant.
The trick is just not mixing/sharing the context. Different instances of the same model do not recognize each other to be more compliant.