feat(ui): finish retail toolbar controls

Discover all seven panel launchers from their DAT panel-id attributes, route mounted panels through event-driven retained window state, and ghost unavailable panels. Port Use and Examine selection/target behavior with exact Appraise dispatch and retail cursor modes.

Co-Authored-By: Codex <codex@openai.com>

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

@@ -201,6 +201,31 @@ public sealed class RetailWindowManagerTests
         Assert.Equal(1, controller.DisposeCount);
     }
 
+    [Fact]
+    public void VisibilityEvent_tracksEveryRegisteredWindowTransition()
+    {
+        var root = new UiRoot { Width = 800, Height = 600 };
+        var inventory = new UiPanel { Width = 100, Height = 100 };
+        root.AddChild(inventory);
+        root.RegisterWindow("inventory", inventory);
+        var transitions = new List<(string Name, bool Visible)>();
+        root.WindowManager.WindowVisibilityChanged +=
+            (name, visible) => transitions.Add((name, visible));
+
+        Assert.True(root.HideWindow("inventory"));
+        Assert.True(root.ShowWindow("inventory"));
+        Assert.False(root.ToggleWindow("inventory"));
+
+        Assert.Equal(
+            new[]
+            {
+                ("inventory", false),
+                ("inventory", true),
+                ("inventory", false),
+            },
+            transitions);
+    }
+
     private sealed class RecordingController : IRetainedPanelController
     {
         public int ShownCount { get; private set; }