feat: give the classroom a desktop instead of a shell

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]>
2026-09-10 08:35:12 -05:00
parent bfc7caf28f
commit 87b55761c6
51 changed files with 1352 additions and 36 deletions
@@ -0,0 +1,62 @@
+#!/usr/bin/env python3
+"""Generate the light colour scheme from the dark one.
+
+There is one set of design tokens, not two themes. The light scheme is the
+same file with the roles swapped, so a colour can only be changed in one
+place and the two can never drift apart.
+"""
+
+import pathlib
+import re
+
+ROOT = pathlib.Path(__file__).resolve().parent.parent
+COLORS = ROOT / "config" / "plasma" / "colors"
+
+# dark value -> light value
+ROLES = {
+    "20,28,32": "242,245,244",      # window background
+    "25,35,40": "233,238,237",      # alternate
+    "15,23,26": "255,255,255",      # view background
+    "18,26,30": "236,241,240",      # header
+    "16,23,26": "228,234,233",      # header, inactive
+    "30,42,47": "225,231,230",      # button alternate
+    "230,237,239": "22,35,42",      # normal text
+    "147,165,170": "96,116,122",    # inactive text
+    "170,186,191": "80,99,105",     # inactive header text
+    "125,142,147": "120,138,144",
+    "79,179,168": "46,140,130",     # accent
+    "126,196,255": "26,110,180",    # link
+    "227,106,106": "192,57,57",     # negative
+    "224,177,92": "166,116,24",     # neutral
+    "111,207,151": "38,142,86",     # positive
+    "156,138,222": "104,80,180",    # visited
+    "14,21,24": "255,255,255",      # text on a selection
+    "10,16,18": "255,255,255",
+}
+
+HEADER = (
+    "# Ekklesia Classroom — light.\n"
+    "#\n"
+    "# GENERATED from EkklesiaDark.colors by tools/build-light-scheme.\n"
+    "# Edit the dark scheme and regenerate; do not edit this file by hand."
+)
+
+
+def main():
+    dark = (COLORS / "EkklesiaDark.colors").read_text()
+
+    light = dark
+    for old, new in sorted(ROLES.items(), key=lambda item: -len(item[0])):
+        light = re.sub(rf"(?<![\d,]){re.escape(old)}(?![\d,])", "\0" + new, light)
+
+    light = light.replace("\0", "")
+    light = light.replace("Ekklesia Classroom Dark", "Ekklesia Classroom Light")
+    light = light.replace("ColorScheme=EkklesiaDark", "ColorScheme=EkklesiaLight")
+    light = light.replace("# Ekklesia Classroom — dark. The default.", HEADER)
+
+    (COLORS / "EkklesiaLight.colors").write_text(light)
+    print("wrote", COLORS / "EkklesiaLight.colors")
+
+
+if __name__ == "__main__":
+    main()