迁移setup-engine工作流

scripts/install_codex_runtime.py

@@ -3,7 +3,8 @@
 
 Current runtime scope:
 - Copy bundled Codex custom agents from this plugin's `runtime/agents/`
-  directory into the target project's `.codex/agents/` directory.
+  directory into the target project's `.codex/agents/` directory. This includes
+  director agents plus Godot, Unity, and Unreal engine specialists.
 - Copy the Codex project guide template from `project-template/AGENTS.md`
   into the target project's root `AGENTS.md`.
 
@@ -160,7 +161,7 @@ def main() -> int:
     print("Codex Game Studios runtime installer")
     print(f"Plugin root: {PLUGIN_ROOT}")
     print(f"Target project: {target}")
-    print("Runtime scope: custom agents plus project AGENTS.md")
+    print("Runtime scope: director agents, engine specialists, plus project AGENTS.md")
 
     try:
         agent_result = install_agents(target, force=args.force, dry_run=True)