The first UI indications of working server-side ATB timing

It's been fits and starts, but I'm very pleased with the progress since last time. And, once again, it's a bit hard to see, so you're going to have to take my word for some of it (or not, but... what would really be the point?).

The fun thing about this is when the ATB gauge hits. Or... just before it hits, since I clearly haven't quite done a good enough job getting the UI timed correctly. But the battle menu pops up when the server knows its ATB gauge is full, based on starting at zero (which will change to a normalized value across all units in the fight, because waiting while nothing is happening is not entertainment) and its fill rate.

Also impossible to see here is that other units that hit their ATB limits are getting notifications from the server, and are being queued up for the UI.

Problem #1 here is clear from the lack of opacity on the arrow when the battle menu comes up: For some reason, that panel doesn't think it has focus. And I'm hard pressed to argue with it, really, because I have utterly failed to document the way I've implemented pretty much EVERYTHING up to this point, so I'm not even sure why the non-battle menus... actually work. And they still do. But this one doesn't. So that's next on the list.