Added
- A D-pad in the controls. Arrows, OK, Back and Home, in an expanding section on the Control tab, so the TV's own interface can be driven from a browser. (#89)
Keys go through the network input service rather than /dev/input: it is a service call, and the TV takes it whatever is in the foreground. Back uses LG's own 412 rather than evdev's 158, which reads as a dismissal instead of a step back; no keycode reaches the home screen at all, so Home launches the home app.