fix: trade gate round 3 - the mount-time-captured dead command bus (ONE

root cause for every dead interaction) + retail's Total Items caption

The round-2 probes nailed it: the request seam fired for BOTH open
paths (use AND drag - "drag-release pick" -> "drag-on-player" ->
"request"), but no open-cmd, no wire-open, and no LiveCommandBus
drop-warning ever printed. MountSecureTrade captured
_bindings.Options.CommandBus() ONCE at mount time - the pre-session
surface whose Publish routes into a null route silently. CommandBus is
a Func for exactly this reason; the social mounts resolve it inside
each lambda. Every trade command - open (use + drag), accept (the
"unpressable" Trade button - the click FIRED, the publish died),
Clear All, close, and drop-on-grid staging - died on that one captured
bus. All six lambdas now resolve the Func per call.

Also: ID_SecureTrade_TotalItemsLabel probe-verified token-free
(fragments ["Total Items: ", ""], one ITEMS variable 0x004E8A23) and
composed via ResolveTemplate - the count texts read retail's exact
"Total Items: N". AD-95 RETIRED same-day.

The pre-feature stub-toast test row (drag-on-player option-on expecting
"Secure trade is not open.") now pins the SecureTradeRequested seam
instead. App suite 4,991/3 skips.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/AcDream.App.Tests/Net/LiveSessionCommandRouterTests.cs

@@ -610,6 +610,12 @@ public sealed class LiveSessionCommandRouterTests
             RemoveFriend: _ => { },
             ClearFriends: () => { },
             RequestLegacyFriends: () => { },
+            OpenTradeNegotiations: _ => { },
+            CloseTradeNegotiations: () => { },
+            AddToTrade: _ => { },
+            AcceptTrade: (_, _, _) => { },
+            DeclineTrade: () => { },
+            ResetTrade: () => { },
             ModifyCharacterSquelch: (_, _, _, _) => { },
             ModifyAccountSquelch: (_, _) => { },
             ModifyGlobalSquelch: (_, _) => { },

tests/AcDream.App.Tests/UI/ItemInteractionControllerTests.cs

@@ -1540,15 +1540,25 @@ public sealed class ItemInteractionControllerTests
         var payload = new ItemDragPayload(
             item, ItemDragSource.Inventory, SourceSlot: 0, SourceCell: new UiItemSlot());
 
+        var tradeRequests = new List<(uint Partner, uint Item)>();
+        h.Controller.SecureTradeRequested += (partner, dragged) =>
+            tradeRequests.Add((partner, dragged));
+
         bool result = h.Controller.PlaceIn3D(payload, targetPlayer);
 
         Assert.Equal(sendsGive, result);
         if (sendsGive)
+        {
             Assert.Equal(new[] { (targetPlayer, item, 1u) }, h.Gives);
+            Assert.Empty(tradeRequests);
+        }
         else
         {
+            // Trade feature (2026-08-14): the option-on drag now raises the
+            // SecureTradeRequested seam (retail's AttemptToTradeItem
+            // @ 0x0056DF80) instead of the pre-feature stub toast.
             Assert.Empty(h.Gives);
-            Assert.Contains(h.Toasts, text => text.Contains("Secure trade", StringComparison.Ordinal));
+            Assert.Equal([(targetPlayer, item)], tradeRequests);
         }
         Assert.Equal(Pack, h.Objects.Get(item)!.ContainerId);
     }

tests/AcDream.App.Tests/UI/Layout/PowerbarLayoutProbeTests.cs

@@ -103,6 +103,44 @@ public sealed class PowerbarLayoutProbeTests
         Console.WriteLine($"[pbprobe] scanned {scanned} layouts");
     }
 
+    /// <summary>2026-08-14 trade gate round 3: dump
+    /// ID_SecureTrade_TotalItemsLabel's fragments + variable hashes so the
+    /// count text can use ResolveTemplate if token-free (AD-95).</summary>
+    [Fact]
+    public void ProbeTotalItemsTemplate()
+    {
+        if (Environment.GetEnvironmentVariable("ACDREAM_PROBE_POWERBAR") != "1")
+            return;
+
+        var datDir = Environment.GetEnvironmentVariable("ACDREAM_DAT_DIR")
+            ?? Path.Combine(
+                Environment.GetFolderPath(Environment.SpecialFolder.UserProfile),
+                "Documents",
+                "Asheron's Call");
+        using var dats = new DatCollection(datDir, DatAccessType.Read);
+
+        uint hash = DatStringResolver.ComputeHash("ID_SecureTrade_TotalItemsLabel");
+        var table = dats.Get<DatReaderWriter.DBObjs.StringTable>(0x23000001u);
+        Console.WriteLine($"[pbprobe] key hash=0x{hash:X8} tableFound={table is not null}");
+        if (table is not null && table.Strings.TryGetValue(hash, out var entry))
+        {
+            for (int i = 0; i < entry.Strings.Count; i++)
+                Console.WriteLine($"[pbprobe] fragment[{i}]='{entry.Strings[i].Value}'");
+            for (int i = 0; i < entry.Variables.Count; i++)
+                Console.WriteLine($"[pbprobe] variable[{i}]=0x{entry.Variables[i]:X8}");
+            foreach (string candidate in new[]
+                { "COUNT", "NUM", "NUMBER", "ITEMS", "TOTAL", "AMOUNT", "N" })
+            {
+                Console.WriteLine(
+                    $"[pbprobe] hash('{candidate}')=0x{DatStringResolver.ComputeHash(candidate):X8}");
+            }
+        }
+        else
+        {
+            Console.WriteLine("[pbprobe] entry NOT FOUND in 0x23000001");
+        }
+    }
+
     private static ElementInfo? FindById(ElementInfo element, uint id)
     {
         if (element.Id == id) return element;