It appears that it's possible to creak Pattern back into some form of operation by changing the shop theme, though that suggestion certainly didn't come from seller so-called support.  Now, to see if we can get the Hetsy Betsy programming monkeys to fix the listings download so that it once again includes Pattern listings, and we'll be somewhere near a usable system.

The shop now works, and you can see the pictures.  Though again, I note that there's something about the design that Google really hates, and has de-indexed all the pages despite being fed with a sitemap.  More unncessary battles to come:)