Remove Location status section; add 10/25/50/75/100 station limit picker; refresh location every foreground

Shared/FuelStore.swift

@@ -103,6 +103,7 @@ struct FuelStore {
     static let locationKey = "fuelboard.lastLocation"  // "lat,lng,timestamp"
     static let fuelKey = "fuelboard.selectedFuel"      // FuelType raw value
     static let sortModeKey = "fuelboard.sortMode"      // SortMode raw value
+    static let stationLimitKey = "fuelboard.stationLimit" // Int (10/25/50/75/100)
 
     // MARK: Stations
 
@@ -167,6 +168,19 @@ struct FuelStore {
         saveString(mode.rawValue, service: sortModeKey)
     }
 
+    // MARK: Station count limit
+
+    static func loadStationLimit() -> Int {
+        if let raw = loadString(service: stationLimitKey), let value = Int(raw), [10, 25, 50, 75, 100].contains(value) {
+            return value
+        }
+        return 25
+    }
+
+    static func saveStationLimit(_ limit: Int) {
+        saveString(String(limit), service: stationLimitKey)
+    }
+
     // MARK: Low-level keychain helpers
 
     private static func keychainData(service: String) -> Data? {