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Michał Pierzchała
60400d04b7
* 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