I also make my design documents (roughly the prompts generated by the prompts) into committed markdown documents. So I show the second-tier prompts at least, you could consider those an intermediate language representation if you like.

> Then there's the question of how do other developers contribute to the code. They don't have your prompts, they just have the code.

I usually try to commit the initial prompts and adjustments. I don't commit trivial things like "That's not quite right, try doing X again" or "Just run the entire test suite"

> So, no, prompts are not source code

Hard disagree, but that's fine.