Changelog

Rakuten Travel area search now uses a single directly-searchable area token, and area discovery returns only searchable leaf areas.

rakuten-travel/search-hotels-simple and rakuten-travel/search-vacant-hotels now accept one area token instead of separate large, middle, small, and detail class-code inputs. The provider still sends Rakuten's upstream class-code parameters internally, but callers must use an area value discovered from get-area-classes.

Replace large_class_code, middle_class_code, small_class_code, and detail_class_code inputs on rakuten-travel/search-hotels-simple and rakuten-travel/search-vacant-hotels with area values returned by rakuten-travel/get-area-classes, such as japan/akita/tazawa or japan/tokyo/tokyo/F. Update get-area-classes callers to send optional query and limit inputs and read areas[] rows with area and label instead of area_classes or area_tree.