Zephyr Workbench, a VSCode extension to manage Zephyr on STM32.
It enables users to easily create, develop, and debug Zephyr applications.
Main features:
Install host dependencies.
Import toolchain and SDK.
Create, configure, build and manage apps.
Debug STM32.
You can directly download it from the VSCode marketplace
For more details, visit the Zephyr Workbench
If you look in the .cproject file for your project, you will find that CubeMX included a commented out messed up Release configuration for you project. I have no idea what it would take to make it right, and I guess the CubeMX people don’t either.