Claude code has a version that runs on the cloud. You grant it access to Github then and you can tell it to make changes and create PR from your phone, tablet, or desktop. I'm curious, but what makes this difference than that?
I think you should definitely reach out to those startups to see if they'd be interested to buy it. Maybe you could package it more as a software consultancy service where you'd customize the code to fit their needs. Since lots of startups already been using software house to bootstrap, I don't see why they wouldn't be interested in your code.
Having said that, I don't think this would be easy feat though, especially considering you've spent 2 years building it, the price might not be something affordable for early-stage startups.