Get IPTC from image and automatically add the caption to a text place

InDesign's caption feature only works, with minor exceptions, by pulling metadata from the image. (I've always been sure that fully structured shops like magazines and catalogs love this; it's an all but useless non-feature for the rest of us.)

However, all of ID's auto-text features (caption, headers, cross references) have the persisting flaw that no line breaks are allowed. If it doesn't fit in one line, across the space allotted, it's just a mess. No, there is no fix.