The whole appliance UI is now configuration for a desktop Debian already
ships: a Plasma 6.3 session with a colour scheme, a look and feel package
that builds the bar, window rules, and KDE's own Kiosk restrictions.
Two things were measured rather than assumed, and both changed a decision.
Plasma restarts a crashed panel three times a minute and then gives up,
which is the failure a classroom has already had. Four lines of systemd
drop-in make it unconditional; the panel then survived eight SIGKILLs a
second apart, back each time in 2.4s.
Plasma draws a minimised task and a background task identically, so the
five states the room needs cannot all be shown. Rather than write a task
manager, the classroom removes minimise: clicking a launcher always means
show me this.
Co-Authored-By: Claude Opus 5 <[email protected]>
The development host is a VM without /dev/kvm, so a candidate desktop
cannot be given a virtual machine here. It gets a systemd container
instead, with the session nested inside a headless sway so that grim can
photograph it and sway's IPC can aim a real pointer at it.
Plasma 6.3.6 comes up in it, software-rendered, at 1920x1080.
Co-Authored-By: Claude Opus 5 <[email protected]>
