More progress on a lightweight programming environment that runs on Linux, Windows, Mac, Android, iOS. Also modifiable live while it runs (though not on mobile devices).
The seed design constraint here was to structurally prevent the pop-up keyboard on a touchscreen from ever blocking my typing. That led to this design of a multi-line commandline editor in the top half, fixing the non-editable output buffer in the bottom half. Independent commands/scripts then expanded in the only other direction available: left/right.