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>

src/AcDream.App/UI/ClientCommandController.cs

@@ -0,0 +1,36 @@
+using AcDream.UI.Abstractions;
+
+namespace AcDream.App.UI;
+
+/// <summary>
+/// Application-layer executor for typed retail client commands. Chat panels
+/// remain backend- and network-agnostic; this controller translates their
+/// intent to the live-session action supplied by the composition root.
+/// </summary>
+public sealed class ClientCommandController
+{
+    private readonly Action _teleportToLifestone;
+
+    public ClientCommandController(Action teleportToLifestone)
+    {
+        _teleportToLifestone = teleportToLifestone
+            ?? throw new ArgumentNullException(nameof(teleportToLifestone));
+    }
+
+    public void Execute(ExecuteClientCommandCmd command)
+    {
+        ArgumentNullException.ThrowIfNull(command);
+
+        switch (command.Command)
+        {
+            // Retail: ClientCommunicationSystem::DoLifestone @ 0x0056FC70
+            // -> CM_Character::Event_TeleToLifestone @ 0x006A1B90.
+            case ClientCommandId.LifestoneRecall:
+                _teleportToLifestone();
+                break;
+            default:
+                throw new ArgumentOutOfRangeException(
+                    nameof(command), command.Command, "Unknown retail client command.");
+        }
+    }
+}