Comment by freedomben

Great example.

Just IME, the quality of the prompt often significantly affects whether it does bad stuff like your example. It's not easy by any stretch and I'm still getting there, but I'm up to a couple dozen or so "Agent Instructions" in my CLAUDE.md files for various projects that have to say things like: "when doing TDD, don't write tests to verify bug fixes in tests" because the agent is really good at following things literally. I am sure it will continue to improve, but until then every project needs some bandaid things like that.