RealRyte Admin Menu v2.6

- Fixed RealRyte branding/HUD remaining visible after admin UI closes.
- closeUi now sends closePanel + closeMenu to the NUI before returning.
- Resource startup explicitly resets Visibility.open/menu and sends close actions.
- Entire #app is visibility-hidden whenever rr-admin-open is not active.
- RealRyte overlays are forced hidden while closed.
- /rradmin and existing F9/F10 mappings preserved.
