Tiny Pebbles came through the 0.2.2 upgrade on Plasma's own purple
wallpaper: its desktop was containment 10, made after the layout had run
(most likely the television arriving after a night-time reboot), with no
wallpaper configured. The look and feel's fallback could not catch it,
because it named a file and Plasma only accepts a wallpaper package there.
The fallback is now the EkklesiaClassroom package, whose one image links to
the classroom's picture. classroom-desktop-wallpaper, run before every
plasmashell start, writes the picture into every desktop containment the
file already has: found by plugin, never by number; panels and everything
else byte for byte; a file that is already right not written at all.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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]>
