Notification tap opens directions to the station

- Alerts (live + real-data test) carry the station name + coordinates in
  userInfo and attach a map snapshot with a red pin, so the expanded
  notification shows where the station is
- Tapping a notification opens Apple Maps driving directions to the
  station from the user's current location (maps:// daddr)
- If Apple Maps hand-off fails (LiveContainer), an in-app map sheet
  (StationMapView) pins the station + user location with a Directions
  button

FuelBoard/ContentView.swift

@@ -159,6 +159,9 @@ struct ContentView: View {
                 showOnboarding = false
             }
         }
+        .sheet(item: $monitor.pendingStationMap) { request in
+            StationMapView(request: request)
+        }
         .onAppear {
             // Onboarding runs first on a fresh install — it owns the initial
             // permission prompts. Location tracking starts once it's done.

FuelBoard/ProximityMonitor.swift

@@ -1,6 +1,18 @@
 import CoreLocation
 import UserNotifications
 import SwiftUI
+import MapKit
+import UIKit
+
+/// A station the user wants to see on a map — set when a notification tap
+/// can't hand off to Apple Maps (e.g. inside LiveContainer), so the app shows
+/// an in-app map with directions instead.
+struct StationMapRequest: Identifiable {
+    let id = UUID()
+    let name: String
+    let latitude: Double
+    let longitude: Double
+}
 
 /// Geofences favourite + closest stations and fires a local notification when
 /// the user enters a station whose price is the cheapest within the radius.
@@ -12,6 +24,7 @@ final class ProximityMonitor: NSObject, ObservableObject, @preconcurrency CLLoca
     @Published var monitoredStationIDs: [String] = []
     @Published var lastAlert: String?
     @Published private(set) var lastTestResult: String?
+    @Published var pendingStationMap: StationMapRequest?
 
     private let manager = CLLocationManager()
     private var stations: [FuelStation] = []
@@ -172,15 +185,65 @@ final class ProximityMonitor: NSObject, ObservableObject, @preconcurrency CLLoca
         }()
         let content = UNMutableNotificationContent()
         content.title = "Cheapest \(fuel.displayName) nearby: \(brand)"
-        content.body = "\(station.name) · \(distanceText) away · \(String(format: "%.1fp", price)). Tap to open."
+        content.body = "\(station.name) · \(distanceText) away · \(String(format: "%.1fp", price)). Tap for directions."
         content.sound = .default
-
-        let request = UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: nil)
-        UNUserNotificationCenter.current().add(request)
-
+        addAlertRequest(content: content, station: station)
         lastAlert = "\(brand) · \(String(format: "%.1fp", price)) · \(distanceText) away"
     }
 
+    /// Adds a notification whose tap opens directions to `station`. The
+    /// station's coordinates ride in `userInfo` so the tap handler can route
+    /// to Apple Maps (or an in-app fallback), and a map snapshot with a pin is
+    /// attached so the expanded notification shows where the station is.
+    private func addAlertRequest(content: UNMutableNotificationContent, station: FuelStation) {
+        content.userInfo = [
+            "stationName": station.name,
+            "stationLat": station.lat,
+            "stationLng": station.lng,
+        ]
+        let options = MKMapSnapshotter.Options()
+        options.region = MKCoordinateRegion(
+            center: CLLocationCoordinate2D(latitude: station.lat, longitude: station.lng),
+            span: MKCoordinateSpan(latitudeDelta: 0.02, longitudeDelta: 0.02)
+        )
+        options.size = CGSize(width: 800, height: 400)
+        options.mapType = .standard
+        let snapshotter = MKMapSnapshotter(options: options)
+        snapshotter.start { [content] snapshot, error in
+            Task { @MainActor in
+                let finalContent = content
+                if let snapshot, error == nil,
+                   let image = Self.mapImage(snapshot: snapshot, station: station) {
+                    let url = FileManager.default.temporaryDirectory
+                        .appendingPathComponent("alert-map-\(UUID().uuidString).png")
+                    if let data = image.pngData() {
+                        try? data.write(to: url)
+                        if let attachment = try? UNNotificationAttachment(identifier: "map", url: url, options: nil) {
+                            finalContent.attachments = [attachment]
+                        }
+                    }
+                }
+                let request = UNNotificationRequest(identifier: UUID().uuidString, content: finalContent, trigger: nil)
+                UNUserNotificationCenter.current().add(request)
+            }
+        }
+    }
+
+    /// Draws a red pin on the map snapshot at the station's location.
+    private static func mapImage(snapshot: MKMapSnapshotter.Snapshot, station: FuelStation) -> UIImage? {
+        let image = snapshot.image
+        let point = snapshot.point(for: CLLocationCoordinate2D(latitude: station.lat, longitude: station.lng))
+        let renderer = UIGraphicsImageRenderer(size: image.size)
+        return renderer.image { context in
+            image.draw(at: .zero)
+            let pinSize = CGSize(width: 36, height: 36)
+            let pinRect = CGRect(x: point.x - pinSize.width / 2, y: point.y - pinSize.height, width: pinSize.width, height: pinSize.height)
+            let pin = UIImage(systemName: "mappin.circle.fill")?
+                .withTintColor(.systemRed, renderingMode: .alwaysTemplate)
+            pin?.draw(in: pinRect)
+        }
+    }
+
     /// Fires a test alert built from REAL data: the cheapest station selling
     /// the monitored fuel within the configured alert radius of the current
     /// location — the same criteria a live geofence entry would apply, minus
@@ -207,10 +270,9 @@ final class ProximityMonitor: NSObject, ObservableObject, @preconcurrency CLLoca
             }()
             let content = UNMutableNotificationContent()
             content.title = "Cheapest \(fuel.displayName) nearby: \(brand)"
-            content.body = "\(candidate.name) · \(distanceText) away · \(String(format: "%.1fp", price)). Tap to open."
+            content.body = "\(candidate.name) · \(distanceText) away · \(String(format: "%.1fp", price)). Tap for directions."
             content.sound = .default
-            let request = UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: nil)
-            UNUserNotificationCenter.current().add(request)
+            addAlertRequest(content: content, station: candidate)
             lastTestResult = "\(fuel.displayName) · \(brand) · \(String(format: "%.1fp", price)) · \(distanceText) away · radius \(unit.format(radiusKM))"
         } else {
             // No real candidate (no stations loaded yet, or none sell the
@@ -259,13 +321,41 @@ final class ProximityMonitor: NSObject, ObservableObject, @preconcurrency CLLoca
         }
     }
 
-    /// Tapping a notification just opens the app (the alert's "Tap to open").
-    /// No extra routing — the app comes to the foreground as-is.
+    /// Tapping a notification opens Apple Maps directions to the station from
+    /// the user's current location. If Apple Maps can't be opened (e.g. inside
+    /// LiveContainer), an in-app map sheet with directions is shown instead.
     nonisolated func userNotificationCenter(
         _ center: UNUserNotificationCenter,
         didReceive response: UNNotificationResponse,
         withCompletionHandler completionHandler: @escaping () -> Void
     ) {
+        let userInfo = response.notification.request.content.userInfo
+        let name = userInfo["stationName"] as? String
+        let lat = userInfo["stationLat"] as? Double
+        let lng = userInfo["stationLng"] as? Double
+        Task { @MainActor in
+            if let name, let lat, let lng {
+                openDirections(to: name, latitude: lat, longitude: lng)
+            }
+        }
         completionHandler()
     }
+
+    /// Opens Apple Maps with driving directions to the station; falls back to
+    /// the in-app map sheet when the hand-off fails.
+    @MainActor
+    private func openDirections(to name: String, latitude: Double, longitude: Double) {
+        let query = name.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed) ?? ""
+        guard let url = URL(string: "maps://?daddr=\(latitude),\(longitude)&q=\(query)") else {
+            pendingStationMap = StationMapRequest(name: name, latitude: latitude, longitude: longitude)
+            return
+        }
+        UIApplication.shared.open(url) { opened in
+            Task { @MainActor in
+                if !opened {
+                    self.pendingStationMap = StationMapRequest(name: name, latitude: latitude, longitude: longitude)
+                }
+            }
+        }
+    }
 }

FuelBoard/StationMapView.swift

@@ -0,0 +1,61 @@
+import SwiftUI
+import MapKit
+import UIKit
+
+/// In-app fallback for notification taps that can't hand off to Apple Maps
+/// (e.g. inside LiveContainer). Shows the station on a map with the user's
+/// location, plus a button to open driving directions in Apple Maps.
+struct StationMapView: View {
+    let request: StationMapRequest
+    @Environment(\.dismiss) private var dismiss
+    @State private var position: MapCameraPosition = .automatic
+
+    private var stationCoordinate: CLLocationCoordinate2D {
+        CLLocationCoordinate2D(latitude: request.latitude, longitude: request.longitude)
+    }
+
+    var body: some View {
+        NavigationStack {
+            Map(position: $position) {
+                Marker(request.name, coordinate: stationCoordinate)
+                    .tint(.red)
+                if let userLocation = FuelStore.loadLocation() {
+                    Annotation("You", coordinate: CLLocationCoordinate2D(
+                        latitude: userLocation.lat,
+                        longitude: userLocation.lng
+                    )) {
+                        Image(systemName: "location.circle.fill")
+                            .font(.title)
+                            .foregroundStyle(.blue)
+                    }
+                }
+            }
+            .navigationTitle(request.name)
+            .navigationBarTitleDisplayMode(.inline)
+            .toolbar {
+                ToolbarItem(placement: .cancellationAction) {
+                    Button("Done") { dismiss() }
+                }
+                ToolbarItem(placement: .primaryAction) {
+                    Button {
+                        openAppleMapsDirections()
+                    } label: {
+                        Label("Directions", systemImage: "arrow.triangle.turn.up.right.diamond.fill")
+                    }
+                }
+            }
+            .onAppear {
+                position = .region(MKCoordinateRegion(
+                    center: stationCoordinate,
+                    span: MKCoordinateSpan(latitudeDelta: 0.02, longitudeDelta: 0.02)
+                ))
+            }
+        }
+    }
+
+    private func openAppleMapsDirections() {
+        let query = request.name.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed) ?? ""
+        guard let url = URL(string: "maps://?daddr=\(request.latitude),\(request.longitude)&q=\(query)") else { return }
+        UIApplication.shared.open(url)
+    }
+}