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.UI.Abstractions/ExecuteClientCommandCmd.cs

@@ -0,0 +1,8 @@
+namespace AcDream.UI.Abstractions;
+
+/// <summary>
+/// User intent to execute a retail client command. The application host owns
+/// the corresponding game-state or network action; UI backends only publish
+/// this record.
+/// </summary>
+public sealed record ExecuteClientCommandCmd(ClientCommandId Command, string Arguments);