Thanks for the reply. Interesting that you mention that it should just use Rack. It reminds me of a time a number of years ago where I was on a mission to use a framework which did not have a million and one dependencies, but just Rack.
Not sure you have come across https://github.com/Ramaze/innate (I am showing my age now :) . It is the core of the Ramaze framework. I really liked the philosophy of that project. Its a shame it never caught on though.
I am not sure if this still works, but 2-3 years ago I listened to a kindle book that I bought through my Echo show device. It was pretty good. I listened to it while I was cooking. It even allowed you to carry on where you left off. But I did notice that a few pages were skipped as I had read the book before. I have since packed away my echo show so I can't verify if they have removed this feature or not.
Not sure you have come across https://github.com/Ramaze/innate (I am showing my age now :) . It is the core of the Ramaze framework. I really liked the philosophy of that project. Its a shame it never caught on though.