Refactor component registration, update deps, improve JSON

- Updated Misaki.HighPerformance package versions in Core and Graphics projects.
- Added IsTrimmable to Ghost.Engine.csproj for trimming support.
- Renamed GetOrRegisterComponent to GetOrRegisterComponentID and updated all usages.
- Component registration codegen now uses a static class with [ModuleInitializer], no longer requires [EngineEntry].
- Improved JSON serialization: added string support, introduced Utf8JsonObjectScope/ArrayScope, and new extension methods for cleaner JSON writing.
- Removed [SkipLocalsInit] from Hierarchy and LocalToWorld.
- Fixed Entity.Invalid to use INVALID_ID for both fields.
- Minor cleanup: clarified comments, reorganized Ghost.Generator in solution, and disabled component serialization generator.

Ghost.Generator/ComponentSerializationGenerator.cs

@@ -11,7 +11,6 @@ namespace Ghost.Generator
     {
         private string GetJsonWriteCall(ITypeSymbol type, string fieldName)
         {
-            // 1. PRIMITIVES (Fastest)
             switch (type.SpecialType)
             {
                 case SpecialType.System_Byte:
@@ -32,26 +31,10 @@ namespace Ghost.Generator
                     return $@"writer.WriteBoolean(""{fieldName}"", value.{fieldName});";
                 case SpecialType.System_Char:
                     return $@"writer.WriteString(""{fieldName}"", [value.{fieldName}]);";
+                case SpecialType.System_String:
+                    return $@"writer.WriteString(""{fieldName}"", value.{fieldName});";
             }
 
-            // TODO: Add well-known types like float3, Vector3, etc.
-#if false
-            // 2. KNOWN MATH TYPES (Optimized Arrays)
-            // Checking by name is simple and effective for standard math libs
-            if (type.Name == "float3" || type.Name == "Vector3")
-            {
-                return $@"writer.WritePropertyName(""{fieldName}"");
-                  writer.WriteStartArray();
-                  writer.WriteNumberValue(value.{fieldName}.x);
-                  writer.WriteNumberValue(value.{fieldName}.y);
-                  writer.WriteNumberValue(value.{fieldName}.z);
-                  writer.WriteEndArray();";
-            }
-#endif
-
-            // 3. FALLBACK: System.Text.Json (Reflection)
-            // If we don't know what it is, let the standard serializer handle it.
-            // This handles float4x4, List<T>, and other nested structs automatically.
             return $@"writer.WritePropertyName(""{fieldName}""); global::System.Text.Json.JsonSerializer.Serialize(writer, value.{fieldName}, options);";
         }
 
@@ -70,17 +53,14 @@ namespace Ghost.Generator
                 case SpecialType.System_UInt16: return "reader.GetUInt16()";
                 case SpecialType.System_UInt32: return "reader.GetUInt32()";
                 case SpecialType.System_UInt64: return "reader.GetUInt64()";
-                case SpecialType.System_IntPtr: return "reader.GetInt64()"; // Note: IntPtr size varies by platform
-                case SpecialType.System_UIntPtr: return "reader.GetUInt64()"; // Note: UIntPtr size varies by platform
+                // Note: the size of IntPtr and UIntPtr varies by platform, we use Int64/UInt64 to ensure compatibility
+                case SpecialType.System_IntPtr: return "reader.GetInt64()";
+                case SpecialType.System_UIntPtr: return "reader.GetUInt64()";
                 case SpecialType.System_Boolean: return "reader.GetBoolean()";
                 case SpecialType.System_Char: return "reader.GetString()[0]";
+                case SpecialType.System_String: return "reader.GetString()";
             }
 
-#if false
-            // For custom math types, you'd need to generate code to read the array back
-            if (type.Name == "float3") return "new float3(reader.GetSingle(), reader.GetSingle(), reader.GetSingle())"; // Simplified
-#endif
-
             return $"global::System.Text.Json.JsonSerializer.Deserialize<{type.ToDisplayString(SymbolDisplayFormat.FullyQualifiedFormat)}>(ref reader, options)";
         }
 
@@ -125,6 +105,7 @@ namespace Ghost.Generator
                 // 2. The Main Template using $@
                 // Watch the double braces {{ }} and double quotes "" ""
                 var sourceCode = $@"// <auto-generated/>
+#nullable enable
 
 namespace {namespaceName}
 {{
@@ -207,6 +188,8 @@ namespace {namespaceName}
 
         public void Initialize(IncrementalGeneratorInitializationContext context)
         {
+            return;
+
             var componentCandidates = context.SyntaxProvider
                 .CreateSyntaxProvider(
                     predicate: (syntaxNode, _) => syntaxNode is StructDeclarationSyntax,