Fix incremental menu animation presentation

engine/Age.Engine/Hosting/IHost.cs

@@ -111,6 +111,9 @@ public interface IHost
     void SetCursorResource(long resourceId) { }
     void ClearCursorResource() { }
     void Sleep(long duration);
+    // Native op-0xd5 pacing sleeps inside run-state 0x40 without publishing retained gfx state.
+    // Interactive hosts must keep this distinct from presentation-capable script op-0xc8 sleep.
+    void WaitForTimedCallbackDeadline(long duration) => Sleep(duration);
     void FrameYield();
     // Native op 0x9 resets scene-owned host services before reloading root script resource 0.
     // Global banks, engine configuration, decoded-asset caches, and persistent profile state survive.