docs: record decision factor detection

docs/current-handoff.md

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 Ollama calls: 0
 Live API calls: 0
 Vitest run: NO
+
+---
+
+### 60B.61 — Decision Remaining-Material-Factor Detection
+
+**Status:** PASSED  
+**Type:** Helper detection experiment (bounded)  
+
+**Question answered:** Does the dedicated remaining-material-factor helper work correctly once malformed tests are repaired, without any broader applyValidatedProposal integration? **Answer: YES.**
+
+**Production additions:**
+- `hasRemainingMaterialFactors(decisionNodeId, graph)` — boolean public helper
+- `countRemainingMaterialFactors(decisionNodeId, graph)` — count variant (internal/helper support)
+- `TERMINAL_STATUSES` and `isUnresolvedUnknown(node)` — internal helpers
+
+**Routes supported:** A (hierarchy), B (direct dependency), C (consequence via may_cause/affects/causes), D (containment via option)  
+**Excluded:** known/resolved/contradicted statuses, supports/measures weak links, arbitrary connectivity, decision self-count  
+
+**Test cases:** 14 in 60B.61 block — all passed  
+**Regression preservation:** 60B.43 PASSED, 60B.11 PASSED, pricing prerequisite-first PASSED  
+
+**Out-of-scope removed:**
+- `remainingMaterialFactorCount` integration hook from applyValidatedProposal return (integration rejected per scope)
+- Extra "countRemainingMaterialFactor counting" test block (out of bounded scope)
+- `makeProductLaunchClosureFixture()` dependency in 60B.61 tests (replaced with local graphs)
+
+**Committed:**
+- Production/tests: `feat(reasoning): detect remaining decision factors`
+- Docs: `docs: record decision factor detection`
+
+**Next step:** Decision-sufficiency closure integration remains a separate next experiment.