Picture a renewal call. The client is happy with the work. Then they ask one fair question.

"This feature here. Show me the requirement it came from, and the test that proves it does what we asked."

You know the suite is green. You know coverage is high. And you realize you can't actually answer. Not quickly, not with evidence. You can show that the tests pass. You can't show that the code does what the spec said.

That gap used to be tiny. In the AI coding era it has quietly become the most expensive thing in your codebase, and almost nobody is measuring it.

How a green build became a feeling instead of a fact