fix(quality): enumeration guard sees naming, not comments — F1/F2/F3 from 20155

F1 (demonstrated defect): surface 2 was a regex over raw YAML text, so a
commented-out ci.yml invocation still counted as enumerated — #1017's own
failure mode reproduced inside the fix, in the most common disable path
there is. Comment lines are now skipped before matching; needles n8/c4
pin both polarities (a comment is not enumeration; a comment naming an
absent path raises no false stale-enumeration). The residual trailing-
comment limit is documented where the grep lives.

F2 (structural): the guard was link [0] of the six-hop pnpm chain it
guards, so severing that chain silenced guard and guarded together.
ci.yml now invokes it directly from the sanitization step too — reachable
from both surfaces it audits, so either path alone keeps one instrument
running.

F3 (vocabulary): failure line and header said 'reachable'; F1/F2 prove
the guard measures NAMING. It now says 'enumerated' everywhere, matching
the success line.

Needles: 14 passed / 0 failed. Real tree: population 44, enumerated 25,
excluded (signed) 19, surfaces 38, unchanged — F2's line adds redundancy,
not membership. F1 demo replayed against the fix: commenting out
test-install-migration.sh now fails loud (UNENUMERATED, rc=1).

Written-by: pepper (sb-it-1-dt)
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01NsKce8iZuSuRnu3gVMCBKB

.woodpecker/ci.yml

@@ -41,6 +41,11 @@ steps:
       # (Constitution + dispatcher + each RUNTIME.md slice). See DESIGN §7 / R9.
       - bash packages/mosaic/framework/tools/quality/scripts/check-resident-budget.sh --self-test
       - bash packages/mosaic/framework/tools/quality/scripts/check-resident-budget.sh
+      # Test-membership guard (#1017): also first link of test:framework-shell.
+      # Invoked from BOTH surfaces it audits (F2, PR #1018) — the guard is link
+      # [0] of the pnpm chain, so severing that chain would silence it together
+      # with everything it guards; this direct line keeps one instrument running.
+      - bash packages/mosaic/framework/tools/quality/scripts/check-test-enumeration.sh
 
   # Blocking gate (#791): a framework upgrade must never write or delete an
   # operator-owned path. The HARD GATE proves an unanticipated operator sentinel