So most of the items in the Antique Shop have the blue indicator bar when you search for them in the Shop Search telling you they can be found in the Antique Shop.
However, I noticed it seems like most (if not all) of the items from the Steele Excavations section of the shop are still missing this indication when you search shops for them.
Just double checked (thanks to a poke from ), and I should be able to make this happen over the weekend. I'll have the format be Antique Shop (TAB NAME) and link to whatever tab the item is found in (like if it's a pirate item, it'd be Antique Shop (PIRATES) or whatever)