She missed the biggest ‚programming portal‘ of all: Smalltalk! Pharo (https://pharo.org/) and Squeak (https://squeak.org/) are the best-known modern incarnations.

Inspecting objects, ‚live‘ coding, a GUI that's intimately tied to its CLI - that's exactly Smalltalk!

The Morphic UI: http://wiki.squeak.org/squeak/1870 and https://en.wikipedia.org/wiki/Morphic_(software)

Making an app: https://codingitwrong.com/2021/04/28/creating-a-smalltalk-ap...

And a nice entry from someone else's digital garden: https://becca9941.github.io/2019/09/01/making-a-ladybug-in-p...

Apple borrowed Smalltalk's paradigm from Xerox PARC and commercialized it (iPad and iOS, with their (pay)walled gardens and locked interfaces), but Smalltalk really pushed the limit with interactivity.

There's still room for Alan Kay's Dynabook, as a portal to programming.