Files
callstack__agent-device/mutation-baselines/decision-kernels.json
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Michał Pierzchała 60400d04b7 feat(mutation): add target-annotation-serde + snapshot-occlusion kernels (#1553)
* feat(mutation): add target-annotation-serde + snapshot-occlusion kernels

Both are pure decision kernels the lane's own membership rule covers
(target-annotation-serde: parse/validate/normalize the .ad comment-line
codec, zero I/O; snapshot-occlusion: pure covered/not-covered decision
where a wrong answer silently blocks or mis-allows a tap) but were
excluded from KERNEL_MODULES.

Fixing the harness's packages/*/src blind spot was required, not
optional: test-scope.ts, ownership.ts, and vitest.mutation.config.ts
all hardcoded `src/` as the only place a kernel's tests could live.
target-annotation-serde's own tests live under
packages/ad-script/src/internal/__tests__/, so without this fix the
module would score 0% from day one — not from weak tests, but because
its test file was silently invisible to the lane. Widened the same
three places, plus mutation-affected.yml's path filter and
isTestFile/ownedTestFiles in ownership.ts, to also recognize
packages/*/src/**/*.test.ts (mirroring vitest.config.ts's own
unit-core project include list).

Triaged every surviving mutant from the initial run: real coverage
gaps got a new/adjusted test (kill-with-test), everything else is
documented equivalent with an inline comment at the mutation site
explaining the invariant that makes it unobservable (redundant
early-returns, JSON.stringify dropping undefined-valued keys,
Number.isFinite/isSafeInteger's total-function safety, caller-enforced
positiveRect/candidate invariants, etc). Baseline recorded from the
actual measured run, not inherited or guessed: 94.03% (315/335) and
89.74% (175/195).

* style: run the formatter over the four files the gate flagged
2026-08-02 11:36:43 +02:00

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JSON

{
"schemaVersion": 1,
"requiredStableRuns": 2,
"stableRuns": 0,
"gating": false,
"modules": {
"kernel-errors": {
"score": 55.19,
"killed": 101,
"survived": 82,
"total": 183,
"strykerVersion": "9.6.1",
"configHash": "sha256:806d9f2e657f",
"updatedAt": "2026-07-27T14:29:40.750Z"
},
"daemon-ref-frame": {
"score": 100,
"killed": 55,
"survived": 0,
"total": 55,
"strykerVersion": "9.6.1",
"configHash": "sha256:806d9f2e657f",
"updatedAt": "2026-07-27T14:29:40.750Z"
},
"interaction-settle": {
"score": 68.95,
"killed": 151,
"survived": 68,
"total": 219,
"strykerVersion": "9.6.1",
"configHash": "sha256:806d9f2e657f",
"updatedAt": "2026-07-27T14:29:40.750Z"
},
"scroll-edge-state": {
"score": 28.75,
"killed": 92,
"survived": 228,
"total": 320,
"strykerVersion": "9.6.1",
"configHash": "sha256:806d9f2e657f",
"updatedAt": "2026-07-27T14:29:40.750Z"
},
"selectors": {
"score": 70.56,
"killed": 901,
"survived": 376,
"total": 1277,
"strykerVersion": "9.6.1",
"configHash": "sha256:806d9f2e657f",
"updatedAt": "2026-07-27T14:29:40.750Z"
},
"target-annotation-serde": {
"score": 94.03,
"killed": 315,
"survived": 20,
"total": 335,
"strykerVersion": "9.6.1",
"configHash": "sha256:8b633048f754",
"updatedAt": "2026-08-02T07:28:56.278Z"
},
"snapshot-occlusion": {
"score": 89.74,
"killed": 175,
"survived": 20,
"total": 195,
"strykerVersion": "9.6.1",
"configHash": "sha256:8b633048f754",
"updatedAt": "2026-08-02T07:28:56.278Z"
}
}
}