experiment: confirm live explicit sufficiency closure

docs/current-handoff.md

@@ -4372,3 +4372,24 @@ Observed:
 What this proves: The deterministic stripping gate from 60B.80 prevents premature model-led terminal closure of parent decisions when no explicit sufficiency confirmation is present, and allows State B to fire naturally through the existing questioning path.
 
 **Doc:** docs/experiment-60b81.md
+
+### Experiment 60B.82 — Live Explicit Confirmation Closure Confirmed (2026-08-15)
+
+**Type:** Paired live observation — explicit-confirmation positive branch (1 update call, production route)
+
+**Input:** Answer with explicit sufficiency confirmation: *"The enterprise customer has now confirmed in writing that they will not sign if we launch this year, so the £700,000 of expected annual revenue from them will not be received. There are no other material uncertainties between launching this year and waiting twelve months."*
+
+**Classification: A — LIVE EXPLICIT-CONFIRMATION CLOSURE CONFIRMED**
+
+Observed:
+- Customer resolved ("Will not sign", negative meaning preserved)
+- Decision terminal (status=resolved, value=null)
+- Both nodes resolved: ["n_enterprise_customer_signing", "n_product_launch_decision"]
+- finalActiveUnknownNodeId = null
+- finalSelectedQuestion = null
+- No new nodes or edges introduced
+- Financial revision correctly applied (£1.2M → £500k reflects confirmed £700k loss)
+
+What this proves: Explicit sufficiency confirmation flows cleanly through the 60B.80 gate to terminal closure of the parent decision, active target clears, and no question is asked. The paired lifecycle (no confirmation→State B / explicit confirmation→terminal close) is live-baselined in production.
+
+**Doc:** docs/experiment-60b82.md