Initial commit: wallaura — KDE wallpaper → keyboard LED sync

Daemon that listens for KDE Plasma wallpaperChanged D-Bus signals,
splits the wallpaper into 4 vertical zones, extracts a dominant color
per zone via median-cut quantization, and applies the colors to the
keyboard's 4 LED zones via legionaura static.

Includes software brightness scaling (default 67%), a config file at
~/.config/wallaura/config.json with hot-reload, CLI commands for
getting/setting brightness, and a systemd user service for autostart.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

wallaura.service

@@ -0,0 +1,16 @@
+[Unit]
+Description=wallaura — sync keyboard LED zones with desktop wallpaper
+Documentation=https://github.com/nivedck/LegionAura
+After=graphical-session.target
+PartOf=graphical-session.target
+
+[Service]
+Type=simple
+ExecStart=%h/tst/wallaura/wallaura.py
+Restart=on-failure
+RestartSec=5
+# Forward journal logs with a tag
+SyslogIdentifier=wallaura
+
+[Install]
+WantedBy=graphical-session.target