Refactor render graph error handling and resource APIs

- RenderGraph.Compile/Execute now return Error for better failure detection; error handling is propagated throughout compiler and executor.
- Renamed ScheduleReleaseResource to ReleaseResource for clarity; updated all usages.
- ResourceManager now calls ReleaseResource directly on Mesh, Material, and Shader types.
- Camera exposes Actual/Virtual size properties and Render returns Error.
- RenderingContext now uses IResourceManager for mesh/resource ops.
- Replaced custom BinaryWriter with BufferWriter in RenderGraphHasher.
- Improved variable naming, interface signatures, and code formatting.
- Added Error extension for IsSuccess/IsFailure.
- Minor FMOD/native interop and test code cleanups.
- No breaking API changes except for new Error return values on some methods.

src/Runtime/Ghost.Graphics.D3D12/D3D12DescriptorAllocator.cs

@@ -95,7 +95,7 @@ internal unsafe class D3D12DescriptorAllocator : IDisposable
 
     #region DSV Methods
 
-    public Identifier<DSVDescriptor> AllocateDSV()  
+    public Identifier<DSVDescriptor> AllocateDSV()
     {
         ObjectDisposedException.ThrowIf(_disposed, this);