Targets the official com.nvidia.geforcenow flatpak (not the community
electron build). Forces XWayland for Hyprland compatibility and injects
a marker-bracketed windowrule into ~/.config/hypr/hyprland.conf so it
takes effect on Omarchy (where ~/.config/hypr/windowrules.conf is not
auto-sourced).
Updated for Hyprland 0.54.3:
- Uses modern `windowrule = ...` syntax (drops deprecated windowrulev2).
- Idempotent marker block in hyprland.conf, with hyprctl reload.
- Restarts Elephant so Walker picks up the new .desktop entry.
