Unified logging: Replace LogSystem with EditorConsoleSink

- Created EditorConsoleSink (implements ILogSink interface)
- EditorConsoleSink stores logs in memory buffer (max 1000 entries)
- Added to Debug::Logger in Application::Initialize()
- ConsolePanel now reads from EditorConsoleSink via static GetInstance()
- Removed separate LogSystem singleton
- Removed editor/src/Core/LogEntry.h (no longer needed)

Now Editor and Engine share the same Debug::Logger, with ConsolePanel
displaying logs via EditorConsoleSink.

engine/include/XCEngine/RHI/D3D12/D3D12ResourceView.h

@@ -2,6 +2,7 @@
 
 #include <d3d12.h>
 #include <wrl/client.h>
+#include <memory>
 
 #include "../RHIResourceView.h"
 #include "../RHIEnums.h"
@@ -28,6 +29,8 @@ public:
     ResourceViewDimension GetDimension() const override { return m_dimension; }
     Format GetFormat() const override { return m_format; }
 
+    void SetOwnedHeap(std::unique_ptr<class D3D12DescriptorHeap> heap);
+
     void InitializeAsRenderTarget(ID3D12Device* device, ID3D12Resource* resource,
                                  const D3D12_RENDER_TARGET_VIEW_DESC* desc,
                                  D3D12DescriptorHeap* heap, uint32_t slotIndex);
@@ -63,6 +66,7 @@ private:
     ID3D12Resource* m_resource;
     D3D12DescriptorHeap* m_heap;
     uint32_t m_slotIndex;
+    std::unique_ptr<D3D12DescriptorHeap> m_ownedHeap;
 };
 
 } // namespace RHI