feat(chat): route retail lifestone commands

Separate retail client actions, ACE server commands, and ordinary chat at the shared router. Port lifestone/lif/ls from the named retail registry through a typed App controller to game action 0x0063, keep unknown verbs on ACE Talk, and cover both UI backends plus exact outbound bytes.

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

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

@@ -0,0 +1,28 @@
+using AcDream.App.UI;
+using AcDream.UI.Abstractions;
+
+namespace AcDream.App.Tests.UI;
+
+public sealed class ClientCommandControllerTests
+{
+    [Fact]
+    public void LifestoneRecall_ExecutesSuppliedSessionActionOnce()
+    {
+        int recalls = 0;
+        var controller = new ClientCommandController(() => recalls++);
+
+        controller.Execute(new ExecuteClientCommandCmd(
+            ClientCommandId.LifestoneRecall, Arguments: string.Empty));
+
+        Assert.Equal(1, recalls);
+    }
+
+    [Fact]
+    public void UnknownCommandId_FailsAtApplicationBoundary()
+    {
+        var controller = new ClientCommandController(() => { });
+        var command = new ExecuteClientCommandCmd((ClientCommandId)999, string.Empty);
+
+        Assert.Throws<ArgumentOutOfRangeException>(() => controller.Execute(command));
+    }
+}