First of all, really cool app!

It would be helpful to add Keywords to the app’s .desktop file so users can find it more easily through desktop search without remembering the exact name. see desktop file spec here:
https://specifications.freedesktop.org/desktop-entry/latest/recognized-keys.html

For example, users might try searching for terms related to what the app does rather than its name. Some possible keywords could be:

Keywords=Brightness;Display;Monitor;Screen;Backlight;

Thanks again for the great project!