Closest mode: TOP + deltas vs the CHEAPEST within radius (not the nearest); list stays nearest-first

FuelBoard/StationsView.swift

@@ -10,6 +10,7 @@ struct StationsView: View {
     @Binding var sortMode: SortMode
     @Binding var stationLimit: Int
     let baselinePrice: Double?
+    let topStationID: String?
     let location: Coordinate?
     let favouriteIDs: Set<String>
     var onToggleFavourite: (FuelStation) -> Void = { _ in }
@@ -28,7 +29,7 @@ struct StationsView: View {
                 Section {
                     if let location {
                         if sortMode == .closest {
-                            Text("Closest \(selectedFuel.displayName) stations — tap a station for directions.")
+                            Text("Closest \(selectedFuel.displayName) stations — nearest first, best value within \(stationLimit) miles.")
                                 .font(.footnote)
                                 .foregroundStyle(.secondary)
                         } else {
@@ -105,13 +106,13 @@ struct StationsView: View {
                         Text("No \(selectedFuel.displayName) stations found.")
                             .foregroundStyle(.secondary)
                     } else {
-                        ForEach(Array(stations.prefix(visibleCount).enumerated()), id: \.element.id) { index, station in
+                        ForEach(Array(stations.prefix(visibleCount)), id: \.id) { station in
                             StationRow(
                                 station: station,
                                 fuel: selectedFuel,
                                 location: location,
                                 baselinePrice: baselinePrice,
-                                isTopResult: index == 0,
+                                isTopResult: station.id == topStationID,
                                 isFavourite: favouriteIDs.contains(station.id),
                                 onToggleFavourite: { onToggleFavourite(station) }
                             )