Add favourite price-drop Check now action

FuelBoard/AlertsView.swift

@@ -32,6 +32,7 @@ struct AlertsView: View {
     let distanceUnit: DistanceUnit
     let monitoredCount: Int
     let lastAlert: String?
+    let onCheckFavouriteDropNow: () -> Void
 
     /// The Stations-tab search distance shown in the user's unit, e.g.
     /// "5 miles" or "8 km" — for the "Follow search" rows.
@@ -139,6 +140,8 @@ struct AlertsView: View {
                             Text(fuel.displayName).tag(fuel)
                         }
                     }
+                    Button("Check now", action: onCheckFavouriteDropNow)
+                        .disabled(!favouriteDropEnabled)
                 } header: {
                     Text("Price-drop alerts")
                 } footer: {

FuelBoard/ContentView.swift

@@ -623,7 +623,10 @@ struct ContentView: View {
             stationLimit: stationLimit,
             distanceUnit: distanceUnit,
             monitoredCount: monitor.monitoredStationIDs.count,
-            lastAlert: monitor.lastAlert
+            lastAlert: monitor.lastAlert,
+            onCheckFavouriteDropNow: {
+                Task { await refresh(force: true) }
+            }
         )
     }