Parent roadmap: #525
Parent epic: #530
Goal
Implement the duplicate-cluster-membership signal.
Reuse
buildCollisionReport (engine.ts:756).
Acceptance
PRs in a high-risk collision cluster raise the signal.
Testing
npm run test:ci, 97%+ coverage. Public/private output boundary preserved; deterministic where applicable.
Parent roadmap: #525
Parent epic: #530
Goal
Implement the duplicate-cluster-membership signal.
Reuse
buildCollisionReport(engine.ts:756).Acceptance
PRs in a high-risk collision cluster raise the signal.
Testing
npm run test:ci, 97%+ coverage. Public/private output boundary preserved; deterministic where applicable.