feat(engine)!: refactor graphics, ECS, and logging APIs

Major refactor of graphics and ECS infrastructure:
- Removed IResourceManager, IRenderSystem, IFenceSynchronizer interfaces; ResourceManager and RenderSystem are now concrete classes.
- Updated all render graph, pipeline, and context code to use concrete ResourceManager.
- Refactored camera/frustum math and render extraction for clarity and correctness; frustum now uses inline arrays.
- RenderingLayerMask is now an immutable struct with bitwise operators.
- Meshlet and meshlet group data structures improved; meshlet build callback signature updated.
- Logging system overhauled: LogMessage is now a class, LogCollection supports change events, and Logger is used directly in the debug console.
- ECS query API: ChunkView.Count renamed to EntityCount; query builder/iterators use VirtualStack.Scope.
- Updated render pipeline and passes for new resource manager and render list APIs.
- Cleaned up obsolete files, improved code style, and updated documentation.
- HLSL meshlet shader updated for new struct layout.
- Debug console now uses new logger and log collection.

BREAKING CHANGE: Public APIs for resource management, rendering, ECS queries, and logging have changed. Interfaces removed; use new concrete types and updated method signatures.

src/Runtime/Ghost.Engine/Components/Camera.cs

@@ -11,13 +11,13 @@ public unsafe struct Camera : IComponent
     public float nearClipPlane;
     public float farClipPlane;
 
-    public float2 sensorSize;
+    public float2 sensorSize; // mm
     public GateFit gateFit;
     public float iso;
     public float shutterSpeed;
     public float aperture;
-    public float focalLength;
-    public float focusDistance;
+    public float focalLength; // mm
+    public float focusDistance; // m
 
     public RenderingLayerMask renderingLayerMask;
 
@@ -29,5 +29,5 @@ public unsafe struct Camera : IComponent
     // TODO: Add more render targets like motion vector, etc.
 
     // Custim render function. If it's not null, the render system will call this function instead of the default render pipeline.
-    public delegate*<ref readonly RenderingContext, ref readonly RenderRequest, void> renderFunc;
+    public delegate*<ref readonly RenderContext, ref readonly RenderRequest, void> renderFunc;
 }

src/Runtime/Ghost.Engine/Components/MeshInstance.cs

@@ -8,7 +8,7 @@ public struct MeshInstance : IComponent
 {
     public Handle<Mesh> mesh;
     public Identifier<MaterialPalette> materialPalette;
-    public ShadowCastingMode shadowCastingMode;
     public RenderingLayerMask renderingLayerMask;
+    public ShadowCastingMode shadowCastingMode;
     public bool staticShadowCaster;
-}
+}