# Clean change fixture — design.md ## §1 Helper signature `dedupeFindings(findings: ReadonlyArray): LensFinding[]`. The key is `${severity}|${summary}|${location}|${line ?? ""}`. ## §2 Wire-in In `risk.run`, call `dedupeFindings` before the 20-finding cap. ## §3 Test fixtures `tests/lens/risk.test.ts` adds a unit test for the helper.