Function wrapper_script_ps1 

pub fn wrapper_script_ps1(input: &WrapperInput<'_>) -> String

The .ps1 tab wrapper (UTF-8 text, no BOM: write_wrapper prepends it). The sentinels are written with [System.IO.File]::WriteAllText, which writes UTF-8 without a BOM and without a newline on both PowerShell editions; Out-File, > and Set-Content do not.