Owner's decision 2026-09-29: mutants check the tests, not the product.
During development they are not run at all — not locally, not in CI,
not by the reviewer. The whole registry is the nightly run
(mutation-gate.yml, #513); a survivor files an issue (#472). The #693
post-mortem: 36 of 57 minutes of a one-line fix went to optional work.
- process-track.mjs: `mutants` is always false (no track, no label).
- classify-changes.mjs: Validate requests no diff mutants on any event;
the `mutants` input stays so old `-f mutants=…` calls do not fail.
- _process.yml: the default for the gate and the merge is false.
- pre-push-gate.mjs: the manual run no longer runs mutants.
- Canon: PROCESS §2.7 (a mutant is written, not run; `--check` keeps the
anchors), §5.1 (`ci:mutants` retired), §8 (ship/show: nothing beyond
gate:small and the spec — one proof per item, no `--smokes` on ship,
a stray flake is an issue, not an investigation), §10.4; AUTHOR,
REVIEWER, AGENTS, TESTING.
- Registry: four mutants of the old request rules replaced by
dev-mutants-requested-again and track-pays-for-mutants-again.
Issue: #709
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018qZfe7YS4rqEMKoVeS3GKd
The screenshot fingerprint and golden baselines stop being a tax on every
task branch:
- Task branches no longer commit docs/images/** or golden baselines. On a
branch the screenshot freshness stays a preflight warning; the review
prompt, REVIEWER.md and AUTHOR.md drop check-docs as a per-task gate.
- beta-derived.yml refreshes them on dev in one bot commit before the beta
candidate: canonical docs capture + docs:accept --reviewed, golden from
the golden-images artifact of a completed Validate on dev +
golden:accept --reviewed. A changed frame or scene is accepted only when
named in the inputs; undeclared differences refuse. Baseline commits carry
Release: and Baseline-Reviewed:; the subject is not a candidate subject.
- classify-changes: the Release: trailer on an issue/* branch no longer
switches on the heavy set. ci:full / ci:golden do: process-track emits
full=true, the review gate dispatches Validate with full=true and does not
accept a light proof.
Canon: PROCESS.md §3 п.13, §5.1, §8, §11.4; CONTRIBUTING.md.
Issue: #697
User-Visible: no
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018qZfe7YS4rqEMKoVeS3GKd
show/ship stop paying for diff mutants and for every move of dev:
- scripts/process-track.mjs resolves the track from the current labels and
the diff (show for unlabelled infra, ask for unlabelled product work) and
checks the mechanical ship limits; outside them the pipeline comments and
relabels track:ship -> track:show in the same round.
- Validate on the review material is light on show/ship: a completed push
run on the exact SHA is proof, a dispatch asks mutants=false. ask and the
ci:mutants label keep the mutant dispatch.
- show/ship skip the pre-review rebase when git merge-tree with dev is
clean; the candidate is rebased once at merge and still passes Validate
before the push to dev. The light merge waits for the push run of the
candidate and dispatches only when none appears.
- ship inside the limits merges after the light Validate without a model
review; the issue gets a machine marker hp:ship-merge.
- ship-review.yml + scripts/ship-review.mjs read the code of all ship
tasks of a beta range in one model session and publish
docs/reviews/SHIP-REVIEW-<tag>.md; both beta publication paths refuse a
range with ship tasks the document does not cover or that carries a High.
- show reviews judge correctness and AC; the spec review installs neither
npm ci nor Chromium, the show review installs Chromium only when the issue
names a smoke.
Canon: PROCESS.md §5, §5.1, §10.4, new §11.7; REVIEWER.md, AUTHOR.md and
AGENTS.md digests.
Issue: #696
User-Visible: no
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018qZfe7YS4rqEMKoVeS3GKd
Claude