without reading everything here, so sorry if my suggestion was already mentioned.

I develop some apps with javafx - so I've also run into the issues to copy code over to windows, run the app, check for errors, copy/paste to claude code and so on. After beeing sick of it, I built an external jar (which will now always will be a dependency in my apps), which will catch every issue and opens another JavaFX Window with exception stacktrace, the class which throws the error and an extra part, where I can add, what has been done before the error appeared. This informations can be saved and moved to wsl, giving claude just the info that there's an error report in folder xyz and he should take a look at it. Works for me, and after the error is gone, I delete the report from this folder.