Kappaemme-git/codex-bug-reproducer ? reverse-engineered prompt

Build me a Codex skill that can look through a codebase, find likely bugs, and prove the strongest ones with focused tests instead of guessing.

I want it to work in a consent first way, so it should stop and ask before creating any reproduction files, and ask again before changing production code. It should be able to take either a codebase on its own or a bug report, stack trace, screenshot, or bad behavior description, then turn that into a minimal repro and a clear red to green proof when a fix works.

Make it rank candidates by how likely they are to be real, show the trigger, expected result, likely actual result, and where in the code it comes from. It should reject unrelated failures and setup issues, and only say a bug is proven when a focused test fails for the predicted reason.

Please also have it write a Markdown report and a JSON evidence file, and make it easy to install and run as a Codex skill. If you need current docs or best practices, look them up online first.