You may wish to consider integrating the toast notification code from the ttkbootstrap toast module to replace the current hack that relies on PowerShell and oaScript.
The ttkbootstrap module is similarly MIT licensed, and the code can be reviewed here. It does rely on the window module, and therefore will need to be reviewed to determine whether it can be amended to operate using ttk proper without whistling up the wind.
You may wish to consider integrating the toast notification code from the ttkbootstrap toast module to replace the current hack that relies on PowerShell and oaScript.
The ttkbootstrap module is similarly MIT licensed, and the code can be reviewed here. It does rely on the window module, and therefore will need to be reviewed to determine whether it can be amended to operate using ttk proper without whistling up the wind.