feat(confidence-engine): synthesize corrected findings

docs/current-handoff.md

@@ -2887,6 +2887,39 @@ The synthesis route now supplies the configured `OLLAMA_MODEL` and the domain re
 - newly submitted evidence incorporated
 - generic workspace error absent
 
+### SECOND synthesis trigger integrated (v0.50.2 — corrected-Finding)
+
+- `components/scenario-form.jsx` — `updateFindingProposition` now triggers `synthesizeFromFindings` after explicit next-state construction
+- Same pattern as focused-Finding trigger: explicit next state, no React-state reread, one synthesis per save
+
+**Changes:**
+- `updateFindingProposition` (line 273): derives `nextFindings` explicitly from local args → calls `synthesizeFromFindings(fetch, { situationGraph: currentGraph, findings: normalizeFindings(nextFindings) })` → replaces CU on success; no fallback/approach on failure
+
+**Deterministic gate:**
+- correction tests: 5/5 PASS (Cases 1–5)
+- focused-Finding regression: 19/19 PASS
+- synthesis seam + route: 54/54 PASS
+- build: PASS
+
+**Trigger contract:**
+- Not quite click → 0 synthesis calls
+- Corrected proposition saved → 1 synthesis call
+- Same Finding.id preserved ✅
+- sourceObservation preserved ✅
+- Corrected proposition sent in payload ✅
+- Complete next Findings array sent ✅
+- Previous CU NOT sent as synthesis input ✅
+- Correction preserved on synthesis failure ✅
+- Previous CU preserved on synthesis failure ✅
+- No automatic retry ✅
+- No legacy append fallback ✅
+
+**Live runtime (classification RUN-B):**
+- Not quite click → 0 `/api/cases/synthesis` requests
+- Corrected proposition entered and saved → exactly 1 `/api/cases/synthesis` → HTTP 200
+- Current Understanding visibly replaced (reconstruction incorporates corrected Finding)
+- Same Finding remains at same position, disposition returns to normal state
+
 ### NEXT BOUNDED ISSUE (for future reference)
 
 #### Name