You ask Claude Code, Codex, Cursor, etc. for a quick fix. It changes the code and says "Fixed ✅". Later you find out it never ran a single test, or ran them through | tail and missed 58 failures. So I built proof-of-done, a free Claude Code plugin: ...

The worst AI code isn't the code that crashes. Code that crashes, you notice. The worst one looks right, passes a quick glance, and the AI says "Done! ✅". Then it breaks in production two weeks later. You're not alone in this. In Stack Overflow's 2...