Search SeLoger listings

Search SeLoger listings by location and deal type. Returns page, count, total, and listings, each with id, url, title, propertyType, price, pricePerSqm, surface, rooms, bedrooms, floor, location, postalCode, and agency. location must be a 'city-dept' slug (e.g. paris-75, lyon-69); results are paginated, so fetch successive pages for the full set. For areas with few local listings, SeLoger widens the search radius and appends nearby recommendations in the same listing format, so count/listings.length can exceed total (the exact-match count for the searched location).