Refactor: variant-aware shader/material pipeline overhaul

Major architectural update to graphics/material/shader system:
- Introduced strongly-typed key structs (Key64/Key128) for passes, variants, and pipelines; removed legacy key types.
- Implemented robust hashing and key generation utilities for efficient variant and pipeline lookup/caching.
- Shader compiler now compiles/caches all keyword variants using new key system; includes handled as lists.
- Switched to push constant root signature for per-draw data; updated HLSL and C# codegen accordingly.
- Refactored Material, Shader, and Pass data structures for cache efficiency and variant support.
- Pipeline library and PSO management now use 128-bit keys and variant-specific caching.
- Replaced WorldNode with SceneNode in editor/scene graph; introduced ComponentManager for archetype/query management.
- Migrated math utilities to Misaki.HighPerformance.Mathematics; updated editor controls.
- Updated all HLSL and codegen for new buffer/push constant layouts and macros.
- Misc: project reference cleanup, D3D12 Work Graph support, doc updates, and code modernization.

Ghost.DSL/ShaderCompiler/DSLShaderSemantics.cs

@@ -0,0 +1,46 @@
+using Ghost.Core.Graphics;
+
+namespace Ghost.DSL.ShaderCompiler;
+
+public enum PropertyScope
+{
+    Global,
+    Local,
+}
+
+internal class PropertySemantic
+{
+    public PropertyScope scope;
+    public ShaderPropertyType type;
+    public string name = string.Empty;
+    public object? defaultValue;
+}
+
+internal class PipelineSemantic
+{
+    public ZTest? zTest;
+    public ZWrite? zWrite;
+    public Cull? cull;
+    public Blend? blend;
+    public ColorWriteMask? colorMask;
+}
+
+internal class PassSemantic
+{
+    public string name = string.Empty;
+    public ShaderEntryPoint taskShader;
+    public ShaderEntryPoint meshShader;
+    public ShaderEntryPoint pixelShader;
+    public List<string>? defines;
+    public List<KeywordsGroup>? keywords;
+    public PipelineSemantic? localPipeline;
+}
+
+internal class DSLShaderSemantics
+{
+    public string name = string.Empty;
+    public string fallback = string.Empty;
+    public List<PropertySemantic>? properties;
+    public PipelineSemantic? pipeline;
+    public List<PassSemantic>? passes;
+}