fix: CMakeLists.txt 自动拷贝测试脚本和GT.ppm

- 添加 run.bat、compare_ppm.py、GT.ppm 到输出目录
- 确保构建后可以直接运行测试

tests/D3D12/CMakeLists.txt

@@ -39,3 +39,16 @@ add_custom_command(TARGET D3D12 POST_BUILD
     ${CMAKE_SOURCE_DIR}/tests/D3D12/Res
     $<TARGET_FILE_DIR:D3D12>/Res
 )
+
+# Copy test scripts to output directory
+add_custom_command(TARGET D3D12 POST_BUILD
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different
+        ${CMAKE_SOURCE_DIR}/tests/D3D12/run.bat
+        $<TARGET_FILE_DIR:D3D12>/run.bat
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different
+        ${CMAKE_SOURCE_DIR}/tests/D3D12/compare_ppm.py
+        $<TARGET_FILE_DIR:D3D12>/compare_ppm.py
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different
+        ${CMAKE_SOURCE_DIR}/tests/D3D12/GT.ppm
+        $<TARGET_FILE_DIR:D3D12>/GT.ppm
+)