InputForge 0.3.1: G915 TKL over LIGHTSPEED

Fixes the missing Lighting page for a G915 TKL on its LIGHTSPEED receiver: the keyboard reports itself as 046d:408e (receiver c545/c547), which 0.3.0 didn't recognise. InputForge now also finds the keyboard's paired slot behind the receiver itself.

Still untested on real G915 TKL hardware. If lighting doesn't work, please post the output of inputforge --lighting-info (it now probes the keyboard read-only) and inputforge --apply-lighting.

Good to know: lighting changes take control from the keyboard's onboard profile, so its own idle-dim/sleep timers stop until you switch onboard profile. InputForge doesn't do battery, host switching or report rate; keep Solaar for those (see README).

Update, then replug the receiver or log out and in so the new access rule applies.

sudo pacman -U inputforge-0.3.1-1-x86_64.pkg.tar.zst