All these years and I've never heard the term "gasper valve" always "air nozzle." ANA - nope, not on the LOT 787s (and they like their plane a little warm.)

I've long wished this information was included on SeatGuru - is there any website that does show this?

In terms of this being a "first world problem". For me, it's a sort of critical piece of information. With air flowing I can endure almost everything including a middle seat in E-. Without a flow of air I have a very hard time.