I’m not sure why you had trouble with Radiator. But maybe there was a bug 3 years ago. I went back to my original tutorial app to see if it still worked. I also updated it to use Hive examples:
@inertia/stinkypete-rb-reward-claim-script-for-steem
Yes, the devportal should also have a simplified tutorial for this. I should work on that.
RE: Digging into Hive ruby library