- 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.
- Fix Chinese character encoding issues causing MSVC C4819 warnings
- Add m_rootSignature member to D3D12PipelineState for PSO creation
- All integration tests pass: OpenGL 4/4, D3D12 4/4
- All RHI unit tests pass: 158/158
