It seems to me that there is a typo in the TestStartBottomLeft method:

should be  Do $$$AssertEquals(##class(codeGolf.ClockwiseWord).Solution(.matrix, 3, 1), "781234569")

I'm not familiar with Ensemble, but it may be possible to replace the regular stream with the %Stream.GlobalCharacterSearchable class?

C:\Program Files\Python313\python3.dll

Here is exactly the version 3.9.13, and not 3.13?