The visit to the podiatrist was enlightening.
I got the reader-predicted advice to stretch more (apparently my Achilles tendons are 'incredibly tight' and it's the source of many of my problems), fitted for new orthotics, a lecture about not letting the tread on my work shoes wear down so much, and an injection of cortisone into a cyst (that hurt like hell and I had to bite my lip to keep from yelling - I didn't want the elderly woman in the next room to think I was a wimp).
The bad news is that I'm going to have to have the bunion surgery.
Not right now, thankfully. There's a predicted SAG strike next year, so I'll do the surgery then, since the doctor told me I'll be out of work for at least 8 weeks.
If I've got to be out of work for 8 weeks, it may as well be in the middle of what may very well be a protracted work stoppage.