Post-merge coverage-audit follow-ups to epic #1702 (found by an independent
gpt-5.5/high audit + adr-phase-coverage cross-reference). None are CRITICAL —
the 9-rule enforcement shipped and works; these close completeness/integrity
gaps between ADR-1703's promises and the as-built reality.
1. drift-guard bin/install.js scope (ADR-1703 L114-119): the drift guard
covered src/runtime-homes.cts only; the ADR named bin/install.js too. Phase
6's glob expansion made bin/install.js a covered surface. Extended
tests/portability-vocab-drift.test.cjs with TWO sound checks: (a) any
bin/install.js top-level function that directly returns path.*() must be in
PATH_RETURNING_FNS (tight, 0 FP — the body-contains heuristic is unsound
here, ~33 FPs); (b) a curated two-way existence lock on the installer path
helpers (catches a rename making a vocab entry stale; keeps the curation in
sync with PATH_RETURNING_FNS). The residual new-resolver boundary (temp-var
shape) is documented.
2. ci-test-scope wiring (the Phase 6 portability selection rule was
ineffective): eslint-rules/ was not in the product-code prefix list, so an
eslint-rules-only change set code_changed=false and CLEARED the matched
tests (reproduced: targeted_tests=[]). Added eslint-rules/ to the prefix
list and the P1-P4 RuleTester suites to the selection rule (it previously
listed only P5/P6). Verified: code_changed=true, 11 tests selected.
3. ADR-1703 acceptance note amended to record the two further as-built
divergences: the disable-ban shipped as an out-of-band test (not the
specified local/no-portability-disable meta-rule — the test runs outside
ESLint so it cannot be self-disabled, at least as strong); and the
drift-guard bin/install.js scope resolution above.
Epic #1702 all eight phase boxes now checked. No runtime change; no-changelog
(contributor tooling + docs).
Closes#1749
Co-authored-by: review-bot <review-bot@gsd>
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