diff --git a/src/AcDream.App/Net/LiveSessionCommandRouter.cs b/src/AcDream.App/Net/LiveSessionCommandRouter.cs
index 0b0b44d4..46b0e042 100644
--- a/src/AcDream.App/Net/LiveSessionCommandRouter.cs
+++ b/src/AcDream.App/Net/LiveSessionCommandRouter.cs
@@ -229,8 +229,14 @@ internal sealed class LiveSessionCommandRouter : ILiveSessionCommandRouting
         commands.Register<AddFriendRuntimeCmd>(
             command => SendIfActive(() => bindings.AddFriend(command.Name)));
         commands.Register<OpenTradeNegotiationsRuntimeCmd>(
-            command => SendIfActive(() =>
-                bindings.OpenTradeNegotiations(command.PartnerGuid)));
+            command =>
+            {
+                bool sent = SendIfActive(() =>
+                    bindings.OpenTradeNegotiations(command.PartnerGuid));
+                // TEMPORARY [trade] probe (2026-08-14 gate round 2).
+                Console.WriteLine(
+                    $"[trade] open-cmd partner=0x{command.PartnerGuid:X8} sent={sent}");
+            });
         commands.Register<CloseTradeNegotiationsRuntimeCmd>(
             _ => SendIfActive(bindings.CloseTradeNegotiations));
         commands.Register<AddToTradeRuntimeCmd>(
diff --git a/src/AcDream.App/UI/RetailUiRuntime.cs b/src/AcDream.App/UI/RetailUiRuntime.cs
index a4d2c167..24ac66f2 100644
--- a/src/AcDream.App/UI/RetailUiRuntime.cs
+++ b/src/AcDream.App/UI/RetailUiRuntime.cs
@@ -500,6 +500,12 @@ public sealed class RetailUiRuntime : IDisposable
                     WindowNames.JumpPowerbar,
                     WindowNames.ExternalContainer,
                     WindowNames.Vendor,
+                    // Trade gate round 2 (2026-08-14): the trade window is
+                    // transient — visibility belongs to RuntimeTradeState's
+                    // open/closed lifecycle, never to the layout file (a
+                    // session that ended mid-trade was restoring an empty
+                    // open window at every launch).
+                    WindowNames.SecureTrade,
                 ]);
         }
 
diff --git a/src/AcDream.Core.Net/WorldSession.cs b/src/AcDream.Core.Net/WorldSession.cs
index 6833825b..6bbfcfb6 100644
--- a/src/AcDream.Core.Net/WorldSession.cs
+++ b/src/AcDream.Core.Net/WorldSession.cs
@@ -2568,6 +2568,8 @@ public sealed class WorldSession : IDisposable
     public void SendOpenTradeNegotiations(uint partnerGuid)
     {
         uint seq = NextGameActionSequence();
+        // TEMPORARY [trade] probe (2026-08-14 gate round 2).
+        Console.WriteLine($"[trade] wire-open partner=0x{partnerGuid:X8} seq={seq}");
         SendGameAction(TradeRequests.BuildOpenTradeNegotiations(seq, partnerGuid));
     }
 
diff --git a/src/AcDream.Runtime/Gameplay/RuntimeTradeState.cs b/src/AcDream.Runtime/Gameplay/RuntimeTradeState.cs
index ab61ba74..fee1a7b6 100644
--- a/src/AcDream.Runtime/Gameplay/RuntimeTradeState.cs
+++ b/src/AcDream.Runtime/Gameplay/RuntimeTradeState.cs
@@ -87,6 +87,10 @@ public sealed class RuntimeTradeState : IDisposable
     /// </summary>
     public void ApplyRegister(GameEvents.RegisterTrade update, uint selfGuid)
     {
+        // TEMPORARY [trade] probe (2026-08-14 gate round 2).
+        Console.WriteLine(
+            $"[trade] register initiator=0x{update.Initiator:X8} "
+            + $"partner=0x{update.Partner:X8} self=0x{selfGuid:X8}");
         lock (_gate)
         {
             ObjectDisposedException.ThrowIf(_disposed, this);