This is really cool. It seems to me LLMs and books are a match made in heaven. An LLM query is more useful than a google search for most text.
Would be cool to see this more deeply integrated, in a koreader extension or something
I created companion.ink to mimic Kindle's UI sensibilities and deliver a pretty seamless AI chat experience on E-Ink displays. It works on Kindle Scribe, Paperwhite, and should work on other E-Readers too, but let me know if there are any issues. Feedback welcome!