New GTK4 layer-shell radial menu (desktopenvs/hyprlua/orbit-menu/), following
astal-menu's single-instance D-Bus daemon conventions. Super+Shift+O opens
straight into a Power ring (sleep/reboot/poweroff/soft-reboot via hyprshutdown);
Super+Ctrl+O opens the full 5-category root (Power, Tools, Scripts sourced live
from ~/Documents/Scripts, Management, and a live open-Windows list with
go-to/bring-here/close/force-kill/get-pid/send-to-workspace actions). Adds a
round launcher button to all 3 eww bar variants with matching glow/hover CSS.
Also retunes hypridle (lock 30s, sleep 1min) and adds a HibernateDelaySec
systemd-sleep.conf.d fragment (deployed by sysupdate.sh) so the machine
hibernates ~80 minutes after going idle instead of drifting to sleep indefinitely.