Development tools for Zephyr on STM32Workbench for Zephyr: VS Code extension to set up, build, flash and debug Zephyr applications on STM32.Devicetree manager: browse, edit and visualize Zephyr devicetree, STM32CubeMX-like for Zephyr.
If you haven't connected the reset from the STlink to the STM32, you should change the reset to "software system reset".
In SW4STM32 v2, you can now change some debug configuration like the clock freq or the reset.