Sorry for the light posting; I’ve been sitting around the house all day waiting for the A/C repair guy to show up. It’s muggy but thankfully not too hot today…
Now’s much better; the A/C's been running for two hours straight, and the house is back down to a sane level of humidity. The cause of the outage: a dead capacitor (I didn't ask the repair guy how many Farads the thing stored, but it was about the size of a soda can).