Widget opens Maps via maps://; onboarding prompts after Continue; forced first fetch

- Widget tap-to-directions now uses the native maps:// scheme instead of
  http://maps.apple.com. The universal-link http URL failed to open from a
  widget and fell back to launching the containing app; maps:// opens
  Apple Maps directly for both small (whole widget) and medium (per row).
- Onboarding: removed the Skip button (mandatory flow), and system prompts
  (location, notifications, local network) now fire only when the user taps
  Continue/Allow on each page — not when the page appears. Pages
  auto-advance once a permission is granted.
- After 'Start Using FuelBoard' the first data fetch is forced, so a
  reinstall that leaves a recent lastRefresh in app-group defaults can no
  longer skip the fetch and leave the station list empty. 35 tests pass.

FuelBoard/ContentView.swift

@@ -182,13 +182,16 @@ struct ContentView: View {
         .onChange(of: showOnboarding) { _, showing in
             // After onboarding finishes (or the test re-run is dismissed),
             // begin foreground location tracking if permission allows, and
-            // run the first data fetch (the relay probe during onboarding
-            // already surfaced the Local Network prompt).
+            // run the FIRST data fetch. This must be a forced refresh: a
+            // reinstall may leave a recent `lastRefresh` in the app-group
+            // defaults (which survive app deletion), which would make the
+            // cache-gated refresh skip the fetch and leave the station list
+            // empty on a brand-new install.
             if !showing, FuelStore.loadHasCompletedOnboarding() {
                 locationManager.startForegroundTracking()
                 monitor.update(stations: stations, favourites: refreshedFavourites,
                                fuel: alertsFuel, radiusKM: alertsRadius)
-                Task { await refresh() }
+                Task { await refresh(force: true) }
             }
         }
         .onChange(of: scenePhase) { _, newPhase in

FuelBoard/OnboardingView.swift

@@ -18,15 +18,8 @@ struct OnboardingView: View {
 
     var body: some View {
         VStack(spacing: 0) {
-            // Top bar: skip + page dots
+            // Top bar: page dots only — onboarding is mandatory, no skip.
             HStack {
-                if page < totalPages - 1 {
-                    Button("Skip") { finish() }
-                        .font(.subheadline)
-                        .foregroundStyle(.secondary)
-                } else {
-                    Color.clear.frame(width: 40, height: 20)
-                }
                 Spacer()
                 HStack(spacing: 8) {
                     ForEach(0..<totalPages, id: \.self) { index in
@@ -36,7 +29,6 @@ struct OnboardingView: View {
                     }
                 }
                 Spacer()
-                Color.clear.frame(width: 40, height: 20)  // balances Skip
             }
             .padding(.horizontal, 20)
             .padding(.top, 12)
@@ -49,17 +41,23 @@ struct OnboardingView: View {
                 donePage.tag(4)
             }
             .tabViewStyle(.page(indexDisplayMode: .never))
-            .onChange(of: page) { _, newPage in
-                // Trigger each system prompt the moment its page appears.
-                if newPage == 1 { prompter.requestLocation() }
-                if newPage == 2 { prompter.requestNotifications() }
-                if newPage == 3 { prompter.requestDataAccess() }
-            }
 
             bottomAction
                 .padding(.horizontal, 20)
                 .padding(.bottom, 24)
         }
+        // Auto-advance once the user grants a permission — the prompt itself
+        // only fires when the Continue button is tapped (after reading the
+        // page's description), never when the page merely appears.
+        .onChange(of: prompter.locationGranted) { _, granted in
+            if granted, page == 1 { page = 2 }
+        }
+        .onChange(of: prompter.notificationsGranted) { _, granted in
+            if granted, page == 2 { page = 3 }
+        }
+        .onChange(of: prompter.dataGranted) { _, granted in
+            if granted, page == 3 { page = 4 }
+        }
         .background(
             LinearGradient(
                 colors: [Color(.systemBackground), Color.accentColor.opacity(0.06)],
@@ -263,9 +261,12 @@ struct OnboardingView: View {
             ) {
                 if prompter.locationDenied {
                     openSettings()
-                } else {
+                } else if !prompter.locationGranted {
+                    // The system prompt fires HERE — after the user has read
+                    // the description and tapped Continue — not on page appear.
                     prompter.requestLocation()
-                    if prompter.locationGranted { page = 2 }
+                } else {
+                    page = 2
                 }
             }
         case 2:
@@ -274,9 +275,10 @@ struct OnboardingView: View {
             ) {
                 if prompter.notificationsDenied {
                     page = 3
-                } else {
+                } else if !prompter.notificationsGranted {
                     prompter.requestNotifications()
-                    if prompter.notificationsGranted { page = 3 }
+                } else {
+                    page = 3
                 }
             }
         case 3:
@@ -286,8 +288,12 @@ struct OnboardingView: View {
                 ) {
                     if prompter.dataDenied {
                         openSettings()
-                    } else if prompter.dataGranted || !prompter.dataLoading {
+                    } else if prompter.dataGranted {
                         page = 4
+                    } else if !prompter.dataLoading {
+                        // Fires the Local Network prompt + relay probe here,
+                        // after the user has read the page and tapped Continue.
+                        prompter.requestDataAccess()
                     }
                 }
                 .disabled(prompter.dataLoading)