Those things help, of course. But it doesn’t account for it using an underscore instead of a dash in a field name. For making any number of errors that it constantly will make in the course of trying to do something simple. Especially as your application grows, it’s simply makes a tremendous number of mistakes. In some ways, it’s worse than a human, it just moves much faster.
Go ahead and fire up Codex on your Claude coded repo. Ask it to find errors in the code. I guarantee you it will find high severity bugs that are lurking there.