I know exactly what JSON format validation is and it makes sense to have it. What does "JSON baseline behavior" mean? That is not a term I recognize in this context. I don't know what it means for JSON to have a behavior or a baseline behavior. It's not code, it's formatted data.
I expect with help from Opus I can figure it out and I will do that if I'm asked to work on it.
Why this is a problem: when there are errors in code review or checking, we learn not to trust the tests from the system for the sake of getting work done.
▸ Testing: JSON output format
✓ PASSED - JSON is valid and error count matches (6)
▸ Testing: JSON baseline behavior
✗ FAILED - baseline metrics not as expected (baselined=0, stale_baseline=0)