I was thinking of Arcan and the Lash#Cat9 setup by the end of your second paragraph. I'm very surprised you had not met it: it seems so directly aligned with your interests and goals, but all you seemed to talk about was Jupyter, a tool which I tried and TBH discarded after 10min.
I talked to Bjorn Stahl quite a bit before writing it, but he is so smart he seems to me to find it hard to talk down to mere mortals. There's a pretty good interview with him on Lobsters:
It is very hard to explain Arcan but I tried:
https://www.theregister.com/2022/10/25/lashcat9_linux_ui/
I talked to Bjorn Stahl quite a bit before writing it, but he is so smart he seems to me to find it hard to talk down to mere mortals. There's a pretty good interview with him on Lobsters:
https://lobste.rs/s/w3zkxx/lobsters_interview_with_bjorn_sta...
You really should talk to him. Together you two could do amazing things. But IMHO let Jupyter go. There's a lot more to life than Python. :-)