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>