Changelog
This hard-breaking cleanup removes legacy low-level Daangn realty operations that were superseded by the facade contract introduced in daangn-marketplace-contract-hardcut.
Use realty-search-listings and realty-listing-detail for listings; realty-search-regions for region discovery; realty-search-complexes, realty-complex-detail, realty-complex-listings, and realty-complex-price-history for complex flows. Follow-up ids are now APIFuse opaque id values returned by search/list operations.