refactor(update): cut over the frame orchestrator

Reduce GameWindow.OnUpdate to one typed orchestration call and remove transitive window callbacks from teardown, liveness, teleport placement, live presentation, auto-entry, and entity packet routing. Preserve the frozen retail object/network order while making the production owner graph explicit and testable.

tests/AcDream.App.Tests/World/LiveWorldOriginStateTests.cs

@@ -1,3 +1,4 @@
+using System.Numerics;
 using AcDream.App.World;
 
 namespace AcDream.App.Tests.World;
@@ -59,4 +60,17 @@ public sealed class LiveWorldOriginStateTests
         Assert.Equal(50, state.CenterX);
         Assert.Equal(51, state.CenterY);
     }
+
+    [Fact]
+    public void CellLocalForSeed_UsesTheCurrentLandblockOrigin()
+    {
+        var state = new LiveWorldOriginState();
+        state.SetPlaceholder(0x30, 0x32);
+
+        Vector3 local = state.CellLocalForSeed(
+            new Vector3(200f, -300f, 5f),
+            0x3130_0001u);
+
+        Assert.Equal(new Vector3(8f, 84f, 5f), local);
+    }
 }