I'd noticed - and thanks!

I somehow missed parking:*:zone=* when I added parking tags here. Eventually I'll get around to adding it for the local CPZs, as it should make adding parking:*:conditional=* rules consistently a bit easier.

I was also thinking of changing the parking=lane polygons which I added to the undocumented area:highway=parking and moving the parking tags back to the parent highway where routing software can see them.