terminalizer.ps1 cannot be loaded. The file is not digitally signed.

```
terminalizer : File C:\Users\user\AppData\Roaming\npm\terminalizer.ps1 cannot be loaded. The file
C:\Users\user\AppData\Roaming\npm\terminalizer.ps1 is not digitally signed. You cannot run this script on the
current system. For more information about running scripts and setting execution policy, see about_Execution_Policies
at https:/go.microsoft.com/fwlink/?LinkID=135170.
At line:1 char:1
+ terminalizer play demo
+ ~~~~~~~~~~~~
+ CategoryInfo : SecurityError: (:) [], PSSecurityException
+ FullyQualifiedErrorId : UnauthorizedAccess
```

Start by reproducing `terminalizer play demo` in PowerShell and inspect the generated `terminalizer.ps1` at the npm user directory shown in the report. Determine how the unsigned script is invoked, then verify that the same command no longer fails with the execution-policy error.

Written by the indexing model from the issue text.