refactor: improve test infrastructure and fix OpenGL GLAD initialization

- Rename D3D12Enum.h to D3D12Enums.h for naming consistency
- Fix OpenGL unit test GLAD initialization by using gladLoadGL()
  instead of gladLoadGLLoader(wglGetProcAddress) for fallback support
- Migrate remaining tests to use gtest_discover_tests for granular
  test discovery (math, core, containers, memory, threading, debug,
  components, scene, resources, input, opengl)
- Remove obsolete TEST_RESOURCES_DIR and copy_directory commands
  from OpenGL unit test CMakeLists (minimal/Res doesn't exist)
- Update TEST_SPEC.md with performance metrics and per-module
  build/test commands for faster development workflow
- Update CMake path references to use lowercase paths

docs/api/threading/task-system-config/enable-task-profiling.md

@@ -0,0 +1,29 @@
+# TaskSystemConfig::enableTaskProfiling
+
+```cpp
+bool enableTaskProfiling = true
+```
+
+是否启用任务性能分析。启用后系统会记录任务的执行时间、等待时间等统计信息，可用于性能调试。
+
+**类型：** `bool`
+
+**默认值：** `true`
+
+**当前状态：** 此配置项当前未实际使用，任务系统不会记录性能分析数据。
+
+**示例：**
+
+```cpp
+TaskSystemConfig config;
+config.workerThreadCount = 4;
+config.enableTaskProfiling = true; // 预留配置项
+
+#ifdef NDEBUG
+config.enableTaskProfiling = false; // 预留配置项
+#endif
+```
+
+## 相关文档
+
+- [TaskSystemConfig 总览](tasksystemconfig.md) - 返回类总览