The tech was out Saturday to swap the compressor. Once they got the new one installed they ran a vacuum test on the sealed system to make sure there wasn't a leak somewhere else.

I suppose there could still be a very tiny leak somewhere that will manifest again days or weeks from now, but the tech seemed satisfied that it was OK.

About 4 hours after they finished, it started making ice - temperatures are now correct (38F fresh, 5F freezer) and the front panel reflects reality.

All parts of the sealed system are covered by the warranty. If it's a leak, that part is covered. Don't let them beat you up on that. The only piece that is kind of a head-scratcher on sealed system warranty is the defrost heaters - they are riveted to the evaporators. Evaps are covered under sealed system, but heater is not - and you are supposed to swap them as a unit (although I have seem some 'motivated' people cut the rivets).