ai-02 reproduction

Public source retained with the related article. Generated results, dependency directories, runtime storage, secrets, and oversized binary artifacts are intentionally excluded.

README

# AI-02 implementation ownership fixture

This fixture compares two synthetic implementations of one webhook contract.
Both pass normal delivery and exact-duplicate controls. The answer-first patch
records its receipt before the business transition, so a transition failure
leaves a receipt which blocks the retry. The comprehension-preserving patch
commits or rolls back receipt and credit together.

The fixture does not measure a real developer, model, conversation, review, or
production system. Its structured review answers make a minimum system model
inspectable; they do not prove comprehension.

Run:

```bash
./run.sh
```

The run uses a digest-pinned PHP 8.4.12 image, no application dependencies,
network access only for three source responses, isolated execution for all
behavior and mutation checks, thirty-two semantic mutations, source hashes,
and a final bundle verifier. After committing the fixture, run
`./bin/run-clean-export.sh` to prove it without untracked workspace state.

Retained files