well, before I tried to use the "Zapo" tool, I always tried to have access to the files to know what I was going to see, being that the tool, yes, it did the translation, and it decompresses .rpa files to .rpy, but trying to have access to this game explicitly, suggested by you who already knew the translation trick, was unable to access it, so I went to use [Unrenforall.bat], which I use here, I never had a problem using it in any .rpa files, and for To be sure, I even tried the website
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and they reported scripts.rpa
This file is not supported I went to see if it was really just the tool that couldn't access it, and it also didn't have access to the files and you already knew I just wanted to give it a challenge... well, for some obvious reason the translation wasn't supported added to the game, but all the text was translated but for some security reason that I know you already know the dev didn't let someone who doesn't know their files modify or tweak them, as in the game's original file _init_.py there is no such modification of these lines that you added:
[class ScriptTranslator(object):] and others that you notice need to be changed to accept the translation you made.
Really, only you could get the game translated yourself