diff --git a/SVSim.BattleNode/Sessions/BattleSession.cs b/SVSim.BattleNode/Sessions/BattleSession.cs
index d7012b9..0e11500 100644
--- a/SVSim.BattleNode/Sessions/BattleSession.cs
+++ b/SVSim.BattleNode/Sessions/BattleSession.cs
@@ -257,11 +257,15 @@ public sealed class BattleSession
             }
             case NetworkBattleUri.TurnEnd when Phase == BattleSessionPhase.AfterReady:
             case NetworkBattleUri.TurnEndFinal when Phase == BattleSessionPhase.AfterReady:
-                // Push a minimal opponent TurnStart so the client transitions to "Opponent's turn…"
-                // display. v1 doesn't simulate the opponent — once this lands, the client sits
-                // there indefinitely (this IS the documented v1 stopping point).
-                result.Add((ScriptedLifecycle.BuildOpponentTurnStart(), NoStock: false));
+                // Scripted opponent: opens its turn, immediately ends it, hands control back.
+                // Two-frame burst — see docs/superpowers/specs/2026-06-01-battle-node-opponent-turn-loop-design.md.
+                // OpponentTurn is set then cleared within the same call to document intent;
+                // the only externally-observable phase after the call is AfterReady, ready for
+                // the next player TurnEnd to fire the cycle again.
                 Phase = BattleSessionPhase.OpponentTurn;
+                result.Add((ScriptedLifecycle.BuildOpponentTurnStart(), NoStock: false));
+                result.Add((ScriptedLifecycle.BuildOpponentTurnEnd(), NoStock: false));
+                Phase = BattleSessionPhase.AfterReady;
                 break;
             case NetworkBattleUri.Retire:
             case NetworkBattleUri.Kill: