0.83.2-alpha · core 2026-10-22

release 0.83.2-alpha on GitHub →

Added

• scripts/mutation-gate.py — does the suite actually pin the rules? The off-the-shelf mutators cover JavaScript; this repo's rules live in scripts/stelow, a shell script with Python inside it, so the tools that would answer the question do not reach it. Each entry in the catalog is a SEMANTIC change to one rule, and the gate requires the suite to FAIL under it. A surviving mutant is a rule nobody pins. npm run test:mutation.

Fixed

• The drift gate was only tested on the green path. The suite proved that generate-transitions.py --check PASSES on a clean tree — which a neutered gate also does. Nothing checked the refusal, so the one check between a hand edit and a published mirror could be turned off and the suite stayed green. The mutation gate caught exactly this: the generator-drift-allowed mutant survived until the refusal had a test.