Um, possibly stupid question, but why doesn't it work natively on the Kobo?
Or is there still no one who actually knows how to write a launcher stub for running commands from an easy GUI menu on the Kobo?
...
Can't you add custom scripts to Kobo Start Menu or something??? This should not be so complicated...
As I said before -- I don't own a Kobo and am not familiar with how to hack it, but it does sound like Kobo Start Menu is equivalent or has similar functionality to KUAL (i.e. you use it to launch custom actions by way of shell scripts).
If it takes five minutes to write
a simple JSON description for KUAL, I imagine it should take about the same time to package a hack for the Kobo.
I refuse to believe that this is the first time anyone thought of running custom shell scripts on demand on the Kobo.