2.0 (10784) has a new special search - @pinned. This seems to be based on one, niche use case involving a Shorcut workflow just recently. Maybe there’s another use case?
This is a strange priority of search and tag improvements. I mean, any improvement in search is welcome but given the other search needs I listed in the OP months ago (also see here for a request for finding unlinked notes), I don’t understand this one.