fix(interaction): close selection lifecycle review gaps

Bind queued actions and pending inventory requests to exact live incarnations, separate optimistic placement from authoritative responses, and serialize retail-style inventory ownership across UI surfaces.

Co-authored-by: OpenAI Codex <codex@openai.com>

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

@@ -72,6 +72,38 @@ public sealed class RetailItemConfirmationControllerTests
         Assert.Equal(0, items.BusyCount);
     }
 
+    [Fact]
+    public void PositiveConfirmationRechecksGlobalInventoryGateBeforeUse()
+    {
+        var objects = BuildObjects(PublicWeenieFlags.VolatileRare);
+        var uses = new List<uint>();
+        var messages = new List<string>();
+        var items = new ItemInteractionController(
+            objects,
+            playerGuid: () => Player,
+            sendUse: uses.Add,
+            sendUseWithTarget: null,
+            sendWield: null,
+            sendDrop: null,
+            placeInBackpack: static (_, _, _) => { },
+            systemMessage: messages.Add,
+            nowMs: () => 1000L);
+        var root = new UiRoot { Width = 800f, Height = 600f };
+        ImportedLayout? shown = null;
+        var factory = new RetailDialogFactory(root, _ =>
+            shown = FixtureLoader.LoadConfirmationDialog());
+        using var confirmations = new RetailItemConfirmationController(factory, items);
+
+        Assert.True(items.ActivateItem(Rare));
+        Assert.True(items.PlaceWorldItemInBackpack(0x70000001u));
+        Assert.IsType<UiButton>(shown!.FindElement(
+            RetailConfirmationDialogView.AcceptButtonId)).OnClick!();
+
+        Assert.Empty(uses);
+        Assert.Equal(0, items.BusyCount);
+        Assert.Equal(new[] { ItemInteractionController.InventoryRequestBusyMessage }, messages);
+    }
+
     private static ClientObjectTable BuildObjects(PublicWeenieFlags flags)
     {
         var objects = new ClientObjectTable();