feat(render): add meshlet rendering and ECS query ref API

Introduces meshlet-based rendering pipeline with new HLSL structures and push constant layouts. Refactors meshlet upload/cooking, updates RenderGraphContext for global/view/instance data, and enhances ECS QueryBuilder with ref returns and [UnscopedRef] for fluent chaining. Improves resource management and disposal patterns, updates D3D12 interop for compatibility, and refines test/app infrastructure. Includes dependency updates, bug fixes, and code cleanups.

src/Runtime/Ghost.Graphics.D3D12/D3D12GraphicsEngine.cs

@@ -160,6 +160,16 @@ internal class D3D12GraphicsEngine : IGraphicsEngine
             return;
         }
 
+        while (_commandBufferReturnQueue.TryDequeue(out var entry))
+        {
+            entry.commandBuffer.Dispose();
+        }
+
+        while (_commandBufferPool.TryDequeue(out var cmd))
+        {
+            cmd.Dispose();
+        }
+
         _resourceDatabase.ReleaseAllResourcesImmediately();
 
         _resourceAllocator.Dispose();