Steps to apply the updated CMakePresets.json:

1) Replace your project's CMakePresets.json with CMakePresets.updated.json.
2) Close Visual Studio.
3) Delete the local and remote header/code model caches:\n   - Windows: %LOCALAPPDATA%\Microsoft\Linux\HeaderCache\1.0\Ubuntu\n   - Remote:  rm -rf ~/.vs/<YourProjectName>
4) Reopen VS → CMake: Delete Cache → Reconfigure → Generate → Build All.
5) Verify in CMake Diagnostics:
   - CMAKE_CXX_COMPILER = /opt/gcc-15/bin/g++
   - PATH begins with /opt/gcc-15/bin
6) IntelliSense should now query /opt/gcc-15/bin/g++ and false positives (e.g., _Float32) disappear.