docs: update TEST_SPEC.md and README.md to reflect new directory structure

- TEST_SPEC.md: Updated test directory structure to reflect Core/Asset,
  Core/IO, and Resources/<Type> subdirectories
- TEST_SPEC.md: Updated module names and test counts (852 total)
- TEST_SPEC.md: Updated build commands for new Resources subdirectories
- README.md: Updated engine structure with Core/Asset/ and Core/IO/
- README.md: Updated Resources section with layered architecture
- README.md: Updated test coverage table with accurate counts

engine/src/Audio/AudioSystem.cpp

@@ -1,5 +1,5 @@
 #include <XCEngine/Audio/AudioSystem.h>
-#include <XCEngine/Audio/WASAPI/WASAPIBackend.h>
+#include <XCEngine/Audio/WindowsAudioBackend.h>
 #include <XCEngine/Components/AudioSourceComponent.h>
 #include <iostream>
 

engine/src/Audio/WindowsAudioBackend.cpp

@@ -2,7 +2,7 @@
 #define NOMINMAX
 #endif
 
-#include <XCEngine/Audio/WASAPI/WASAPIBackend.h>
+#include <XCEngine/Audio/WindowsAudioBackend.h>
 #include <iostream>
 #include <algorithm>
 

engine/src/Core/Asset/AsyncLoader.cpp

@@ -1,6 +1,6 @@
-#include "Resources/AsyncLoader.h"
-#include "Resources/ResourceManager.h"
-#include "Resources/ResourceTypes.h"
+#include <XCEngine/Core/Asset/AsyncLoader.h>
+#include <XCEngine/Core/Asset/ResourceManager.h>
+#include <XCEngine/Core/Asset/ResourceTypes.h>
 
 namespace XCEngine {
 namespace Resources {

engine/src/Core/Asset/ResourceCache.cpp

@@ -1,5 +1,5 @@
-#include "Resources/ResourceCache.h"
-#include "Resources/ResourceManager.h"
+#include <XCEngine/Core/Asset/ResourceCache.h>
+#include <XCEngine/Core/Asset/ResourceManager.h>
 
 namespace XCEngine {
 namespace Resources {

engine/src/Core/Asset/ResourceDependencyGraph.cpp

@@ -1,4 +1,4 @@
-#include "Resources/ResourceDependencyGraph.h"
+#include <XCEngine/Core/Asset/ResourceDependencyGraph.h>
 
 namespace XCEngine {
 namespace Resources {

engine/src/Core/Asset/ResourceManager.cpp

@@ -1,6 +1,6 @@
-#include "Resources/ResourceManager.h"
-#include "Resources/ResourceHandle.h"
-#include "Resources/ResourceTypes.h"
+#include <XCEngine/Core/Asset/ResourceManager.h>
+#include <XCEngine/Core/Asset/ResourceHandle.h>
+#include <XCEngine/Core/Asset/ResourceTypes.h>
 
 namespace XCEngine {
 namespace Resources {

engine/src/Core/Asset/ResourceTypes.cpp

@@ -1,4 +1,4 @@
-#include "Resources/ResourceTypes.h"
+#include <XCEngine/Core/Asset/ResourceTypes.h>
 
 namespace XCEngine {
 namespace Resources {

engine/src/Core/Containers/String.cpp

@@ -1,4 +1,4 @@
-#include "Containers/String.h"
+#include <XCEngine/Core/Containers/String.h>
 #include <cstdlib>
 #include <cstdio>
 

engine/src/Core/IO/FileArchive.cpp

@@ -1,4 +1,4 @@
-#include "Resources/FileArchive.h"
+#include <XCEngine/Core/IO/FileArchive.h>
 #include <cstdio>
 
 namespace XCEngine {

engine/src/Core/IO/IResourceLoader.cpp

@@ -1,4 +1,4 @@
-#include "XCEngine/Resources/IResourceLoader.h"
+#include <XCEngine/Core/IO/IResourceLoader.h>
 #include <fstream>
 
 namespace XCEngine {

engine/src/Core/IO/ResourceFileSystem.cpp

@@ -1,4 +1,4 @@
-#include "Resources/ResourceFileSystem.h"
+#include <XCEngine/Core/IO/ResourceFileSystem.h>
 #include <algorithm>
 #include <cstdio>
 

engine/src/Core/IO/ResourcePackage.cpp

@@ -1,4 +1,4 @@
-#include "Resources/ResourcePackage.h"
+#include <XCEngine/Core/IO/ResourcePackage.h>
 #include <cstdio>
 #include <algorithm>
 

engine/src/Core/IO/ResourcePath.cpp

@@ -1,4 +1,4 @@
-#include <XCEngine/Resources/ResourcePath.h>
+#include <XCEngine/Core/IO/ResourcePath.h>
 #include <algorithm>
 
 namespace XCEngine {

engine/src/Core/Math/Color.cpp

@@ -1,4 +1,4 @@
-#include "Math/Color.h"
+#include "Core/Math/Color.h"
 
 namespace XCEngine {
 namespace Math {

engine/src/Core/Math/FrustumBounds.cpp

@@ -1,5 +1,5 @@
-#include "Math/Frustum.h"
-#include "Math/Bounds.h"
+#include "Core/Math/Frustum.h"
+#include "Core/Math/Bounds.h"
 
 namespace XCEngine {
 namespace Math {

engine/src/Core/Math/Geometry.cpp

@@ -1,7 +1,7 @@
-#include "Math/Sphere.h"
-#include "Math/Plane.h"
-#include "Math/Box.h"
-#include "Math/Ray.h"
+#include "Core/Math/Sphere.h"
+#include "Core/Math/Plane.h"
+#include "Core/Math/Box.h"
+#include "Core/Math/Ray.h"
 
 namespace XCEngine {
 namespace Math {

engine/src/Core/Math/Matrix.cpp

@@ -1,7 +1,7 @@
-#include "Math/Matrix3.h"
-#include "Math/Matrix4.h"
-#include "Math/Quaternion.h"
-#include "Math/Vector3.h"
+#include "Core/Math/Matrix3.h"
+#include "Core/Math/Matrix4.h"
+#include "Core/Math/Quaternion.h"
+#include "Core/Math/Vector3.h"
 
 namespace XCEngine {
 namespace Math {

engine/src/Core/Math/Quaternion.cpp

@@ -1,6 +1,6 @@
-#include "Math/Quaternion.h"
-#include "Math/Matrix4.h"
-#include "Math/Vector3.h"
+#include "Core/Math/Quaternion.h"
+#include "Core/Math/Matrix4.h"
+#include "Core/Math/Vector3.h"
 
 namespace XCEngine {
 namespace Math {

engine/src/Core/Math/Transform.cpp

@@ -1,5 +1,5 @@
-#include "Math/Transform.h"
-#include "Math/Matrix4.h"
+#include "Core/Math/Transform.h"
+#include "Core/Math/Matrix4.h"
 
 namespace XCEngine {
 namespace Math {

engine/src/Platform/Windows/WindowsInputModule.cpp

@@ -1,4 +1,4 @@
-#include "Input/Platform/WindowsInputModule.h"
+#include "Platform/Windows/WindowsInputModule.h"
 #include "Input/InputManager.h"
 #include <Windows.h>
 

engine/src/Platform/Windows/WindowsWindow.cpp

@@ -1,5 +1,5 @@
 #include "Platform/Windows/WindowsWindow.h"
-#include "Input/Platform/WindowsInputModule.h"
+#include "Platform/Windows/WindowsInputModule.h"
 #include <Windows.h>
 
 namespace XCEngine {

engine/src/RHI/OpenGL/OpenGLScreenshot.cpp

@@ -3,7 +3,7 @@
 #include "XCEngine/RHI/OpenGL/OpenGLSwapChain.h"
 #include "XCEngine/Debug/Logger.h"
 #include "XCEngine/Debug/ConsoleLogSink.h"
-#include "XCEngine/Containers/String.h"
+#include "XCEngine/Core/Containers/String.h"
 
 #include <glad/glad.h>
 

engine/src/Resources/AudioClip/AudioClip.cpp

@@ -1,4 +1,4 @@
-#include "Resources/AudioClip.h"
+#include <XCEngine/Resources/AudioClip/AudioClip.h>
 
 namespace XCEngine {
 namespace Resources {

engine/src/Resources/AudioClip/AudioLoader.cpp

@@ -1,6 +1,6 @@
-#include "Resources/AudioLoader.h"
-#include "Resources/ResourceManager.h"
-#include "Resources/ResourceTypes.h"
+#include <XCEngine/Resources/AudioClip/AudioLoader.h>
+#include <XCEngine/Core/Asset/ResourceManager.h>
+#include <XCEngine/Core/Asset/ResourceTypes.h>
 #include <cstring>
 
 namespace XCEngine {

engine/src/Resources/Material/Material.cpp

@@ -1,5 +1,6 @@
-#include "Resources/Material.h"
-#include "Resources/Shader.h"
+#include <XCEngine/Resources/Material/Material.h>
+#include <XCEngine/Resources/Shader/Shader.h>
+#include <XCEngine/Core/Asset/ResourceManager.h>
 
 namespace XCEngine {
 namespace Resources {

engine/src/Resources/Material/MaterialLoader.cpp

@@ -1,6 +1,6 @@
-#include "Resources/MaterialLoader.h"
-#include "Resources/ResourceManager.h"
-#include "Resources/ResourceTypes.h"
+#include <XCEngine/Resources/Material/MaterialLoader.h>
+#include <XCEngine/Core/Asset/ResourceManager.h>
+#include <XCEngine/Core/Asset/ResourceTypes.h>
 
 namespace XCEngine {
 namespace Resources {

engine/src/Resources/Mesh/Mesh.cpp

@@ -1,4 +1,4 @@
-#include "Resources/Mesh.h"
+#include <XCEngine/Resources/Mesh/Mesh.h>
 #include <cstring>
 
 namespace XCEngine {

engine/src/Resources/Mesh/MeshImportSettings.cpp

@@ -1,4 +1,4 @@
-#include <XCEngine/Resources/MeshImportSettings.h>
+#include <XCEngine/Resources/Mesh/MeshImportSettings.h>
 
 namespace XCEngine {
 namespace Resources {

engine/src/Resources/Mesh/MeshLoader.cpp

@@ -1,5 +1,5 @@
-#include "Resources/MeshLoader.h"
-#include "Resources/ResourceManager.h"
+#include <XCEngine/Resources/Mesh/MeshLoader.h>
+#include <XCEngine/Core/Asset/ResourceManager.h>
 
 namespace XCEngine {
 namespace Resources {

engine/src/Resources/Shader/Shader.cpp

@@ -1,4 +1,4 @@
-#include "Resources/Shader.h"
+#include <XCEngine/Resources/Shader/Shader.h>
 
 namespace XCEngine {
 namespace Resources {

engine/src/Resources/Shader/ShaderLoader.cpp

@@ -1,6 +1,6 @@
-#include "Resources/ShaderLoader.h"
-#include "Resources/ResourceManager.h"
-#include "Resources/ResourceTypes.h"
+#include <XCEngine/Resources/Shader/ShaderLoader.h>
+#include <XCEngine/Core/Asset/ResourceManager.h>
+#include <XCEngine/Core/Asset/ResourceTypes.h>
 
 namespace XCEngine {
 namespace Resources {

engine/src/Resources/Texture/Texture.cpp

@@ -1,4 +1,4 @@
-#include "Resources/Texture.h"
+#include <XCEngine/Resources/Texture/Texture.h>
 #include <cstring>
 
 namespace XCEngine {

engine/src/Resources/Texture/TextureImportSettings.cpp

@@ -1,4 +1,4 @@
-#include <XCEngine/Resources/TextureImportSettings.h>
+#include <XCEngine/Resources/Texture/TextureImportSettings.h>
 
 namespace XCEngine {
 namespace Resources {

engine/src/Resources/Texture/TextureLoader.cpp

@@ -1,5 +1,5 @@
-#include "Resources/TextureLoader.h"
-#include "Resources/ResourceManager.h"
+#include <XCEngine/Resources/Texture/TextureLoader.h>
+#include <XCEngine/Core/Asset/ResourceManager.h>
 
 namespace XCEngine {
 namespace Resources {