A fairly significant update, 1.1’s Mac component leverages AppleScript’s Choose File so you can select multiple PowerShell files to sign at once. It took a bit longer than I thought it would because while you can create generic list objects in PowerShell functions, what gets returned is a generic array. Sigh.
Anyway, it’s up at https://www.powershellgallery.com/packages/Set-PowerShellScriptSig/1.1, and works on both Windows and macOS.