Fix iOS deprecation warnings

Siri was hit-and-miss on 'unleaded near me' (\u2018can't do that, searching
in app\u2019 fallback). The generic parameterized AppShortcut ('cheapest
${fuel}') competed with the fixed-fuel literal-word shortcuts for the same
intent, degrading NLU ranking; it was already documented as flaky. Remove it
(now 9 shortcuts, under the 10 cap) and add natural phrase variants for
unleaded/petrol ('What's the cheapest unleaded near me', 'Cheapest unleaded
near me', 'Where's the cheapest petrol'). All phrases keep .applicationName
per the iOS 26 metadata requirement. Build-verified in extract.actionsdata:
generic gone, new phrases registered.

.gitignore

@@ -1,6 +1,7 @@
 build/
 build-release/
 build-sim/
+build-watch/
 .DS_Store
 *.xcuserstate
 xcuserdata/

BACKLOG.md

@@ -113,12 +113,19 @@ Status: TODO / IN PROGRESS / DONE / BLOCKED.
   action in the Alerts tab that forces a fetch and immediately re-evaluates the
   cheapest-favourite alert. Copy should set expectation honestly: standard
   mode checks when FuelBoard refreshes prices (up to twice daily).
-- [ ] **Price-drop alerts: optional frequent-check mode** — if the app ever
+- [ ] **Data checking mode: Standard vs Smart** — keep the current cache-first
-  relaxes the current "twice daily max" data policy, expose this as a clearly
+  / 12 h policy as `Standard`, and add an optional `Smart` mode in Settings.
-  separate mode rather than a freeform frequency slider. Example framing:
+  `Smart` should try lightweight background checks of the mirror pointer
-  `Standard` (current behaviour) vs `Frequent` (best-effort extra checks),
+  (`latest.json` / `data_updated`) more often, and only download the full price
-  with conservative caps (e.g. every 4–6 h, not hourly) and copy that does not
+  dataset when a newer snapshot is available. Design goal: better freshness
-  promise exact timing under iOS background scheduling.
+  without pretending to do real-time refreshes or re-downloading the full dump
+  unnecessarily. User-facing copy must be explicit and honest:
+  - `Standard` — Saves battery. Refreshes price data up to twice daily.
+  - `Smart` — Checks for newer data more often in the background and refreshes
+    full prices only when an update is available.
+  Add a footnote/subcopy that background checks are best-effort and happen only
+  when iOS allows, so timing is not exact. Prefer this 2-mode setting over a
+  freeform frequency slider.
 - [ ] **Pull-to-refresh spinner state** — surface refresh in-flight state
   (currently `refreshable` fires but no visible progress in the row list).
 - [x] **Offline first-run** — bundled REAL 8,022-station dump (`FuelBoardDump`,

Config/App-Info.plist

@@ -41,8 +41,13 @@
 	<string>FuelBoard uses your location to find the cheapest nearby petrol stations.</string>
 	<key>NSSupportsLiveActivities</key>
 	<true/>
+	<key>BGTaskSchedulerPermittedIdentifiers</key>
+	<array>
+		<string>com.apt.fuelboard.smart-refresh</string>
+	</array>
 	<key>UIBackgroundModes</key>
 	<array>
+		<string>fetch</string>
 		<string>location</string>
 	</array>
 	<key>UILaunchScreen</key>

FuelBoard.xcodeproj/project.pbxproj

@@ -292,6 +292,7 @@
 				CODE_SIGN_ENTITLEMENTS = Config/App.entitlements;
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = F3BE6NE7U3;
 				GENERATE_INFOPLIST_FILE = NO;
 				INFOPLIST_FILE = Config/App-Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = (
@@ -314,6 +315,7 @@
 				CODE_SIGN_ENTITLEMENTS = Config/App.entitlements;
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = F3BE6NE7U3;
 				GENERATE_INFOPLIST_FILE = NO;
 				INFOPLIST_FILE = Config/App-Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = (
@@ -336,6 +338,7 @@
 				CODE_SIGN_ENTITLEMENTS = Config/Widget.entitlements;
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = F3BE6NE7U3;
 				GENERATE_INFOPLIST_FILE = NO;
 				INFOPLIST_FILE = Config/Widget-Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = (
@@ -360,6 +363,7 @@
 				CODE_SIGN_ENTITLEMENTS = Config/Widget.entitlements;
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = F3BE6NE7U3;
 				GENERATE_INFOPLIST_FILE = NO;
 				INFOPLIST_FILE = Config/Widget-Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = (

FuelBoard/ContentView.swift

@@ -16,6 +16,7 @@ struct ContentView: View {
 
     @State private var stations: [FuelStation] = FuelStore.loadStations()
     @State private var selectedFuel: FuelType = FuelStore.loadSelectedFuel()
+    @State private var dataRefreshMode: DataRefreshMode = FuelStore.loadDataRefreshMode()
     @State private var sortMode: SortMode = FuelStore.loadSortMode()
     @State private var stationLimit: Int = FuelStore.loadStationLimit()
     @State private var distanceUnit: DistanceUnit = FuelStore.loadDistanceUnit()
@@ -50,6 +51,23 @@ struct ContentView: View {
             // fires on every fix incl. background significant-change
             // wake-ups, so the Lock Screen pill stays live while driving.
             updateLiveActivity()
+            refreshRoadDistancesIfNeeded()
+        }
+    }
+
+    /// Kicks off a (throttled) Apple-Maps road-distance recompute for the
+    /// stations around the current fix. The app owns routing — the widget and
+    /// Live Activity only read the cached result. Falls back to the last saved
+    /// location so it can run before the first fresh GPS fix arrives.
+    private func refreshRoadDistancesIfNeeded() {
+        let origin = location ?? FuelStore.loadLocation()
+        guard let origin else { return }
+        Task {
+            await RoadDistanceService.refreshIfNeeded(
+                stations: stations,
+                lat: origin.lat,
+                lng: origin.lng
+            )
         }
     }
 
@@ -304,7 +322,7 @@ struct ContentView: View {
 #else
             let shouldSkipOnboarding = false
 #endif
-            if FuelStore.loadHasCompletedOnboarding()
+            if !FuelStore.shouldShowOnboarding()
                 || shouldSkipOnboarding {
                 locationManager.startForegroundTracking()
                 // Geofences and the Live Activity must follow the user even in
@@ -317,6 +335,10 @@ struct ContentView: View {
                                fuel: alertsFuel, radiusKM: effectiveAlertsRadiusKM)
                 monitor.setEnabled(alertsEnabled)
                 updateLiveActivity()
+                // Compute road distances early (throttled; falls back to the
+                // last saved location) so distance surfaces are road-matched
+                // as soon as stations are available.
+                refreshRoadDistancesIfNeeded()
                 // Refresh only when the cache is stale (twice-a-day policy).
                 // Skipped under the force-* hooks so the banner stays up.
 #if DEBUG
@@ -344,6 +366,7 @@ struct ContentView: View {
             if !showing, FuelStore.loadHasCompletedOnboarding() {
                 locationManager.startForegroundTracking()
                 installLocationUpdateHook()
+                SmartDataRefreshScheduler.scheduleNextIfNeeded()
                 ensureBackgroundMotionTrackingIfNeeded()
                 monitor.update(stations: stations, favourites: refreshedFavourites,
                                fuel: alertsFuel, radiusKM: effectiveAlertsRadiusKM)
@@ -359,9 +382,11 @@ struct ContentView: View {
                 if !showOnboarding, FuelStore.loadHasCompletedOnboarding() {
                     locationManager.startForegroundTracking()
                 }
+                SmartDataRefreshScheduler.scheduleNextIfNeeded()
                 monitor.update(stations: stations, favourites: refreshedFavourites,
                                fuel: alertsFuel, radiusKM: effectiveAlertsRadiusKM)
                 updateLiveActivity()
+                refreshRoadDistancesIfNeeded()
                 // No network fetch on foreground — pull-to-refresh is the override.
             } else {
                 locationManager.stopForegroundTracking()
@@ -377,6 +402,7 @@ struct ContentView: View {
                 monitor.update(stations: stations, favourites: refreshedFavourites,
                                fuel: alertsFuel, radiusKM: effectiveAlertsRadiusKM)
                 updateLiveActivity()
+                refreshRoadDistancesIfNeeded()
             }
         }
         )
@@ -764,6 +790,7 @@ struct ContentView: View {
             tipStore: tipStore,
             distanceUnit: $distanceUnit,
             priceDisplayStyle: $priceDisplayStyle,
+            dataRefreshMode: $dataRefreshMode,
             alertsFuel: alertsFuel,
             alertsRadiusKM: alertsRadius,
             testAlertResult: monitor.lastTestResult,
@@ -826,6 +853,7 @@ struct ContentView: View {
             stations = fetched
             FuelStore.saveStations(fetched)
             FuelStore.saveLastRefresh()
+            FuelStore.saveLastSmartProbe()
             // Persist envelope metadata (source, station count, GOV.UK
             // dataset update time) for the Settings → About section — the
             // live chain records whichever leg served the fetch.
@@ -949,7 +977,7 @@ struct StationRow: View {
                     .lineLimit(1)
                     .truncationMode(.tail)
                 if let location {
-                    Text(distanceUnit.format(station.distanceKM(to: location.lat, lng2: location.lng)))
+                    Text(distanceUnit.format(FuelStore.displayDistanceKM(station: station, userLat: location.lat, userLng: location.lng)))
                         .font(.caption2)
                         .foregroundStyle(.secondary)
                         .monospacedDigit()

FuelBoard/FuelBoardApp.swift

@@ -1,14 +1,61 @@
+import ActivityKit
+import BackgroundTasks
 import SwiftUI
 
 @main
 struct FuelBoardApp: App {
+    init() {
+        #if DEBUG
+        // QA hook (Debug builds only): `-qaLiveActivity e10|e5|diesel` starts a
+        // Live Activity with a long station name so the Lock Screen / island
+        // layout can be rendered in the Simulator for visual QA.
+        let args = ProcessInfo.processInfo.arguments
+        if let idx = args.firstIndex(of: "-qaLiveActivity"),
+           args.indices.contains(idx + 1),
+           let fuel = FuelType(rawValue: args[idx + 1]) {
+            startQALiveActivity(fuel: fuel)
+        }
+        #endif
+    }
+
     var body: some Scene {
         WindowGroup {
             ContentView()
                 .onOpenURL(perform: handleOpenURL)
         }
+        .backgroundTask(.appRefresh(SmartDataRefreshScheduler.taskIdentifier)) {
+            await SmartDataRefreshCoordinator.runBackgroundProbe()
+        }
     }
 
+    #if DEBUG
+    private func startQALiveActivity(fuel: FuelType) {
+        let state = FuelBoardLiveActivityAttributes.ContentState(
+            fuel: fuel,
+            stationID: "qa-phoenix",
+            stationName: "Phoenix Filling Stations",
+            brand: "Phoenix",
+            pricePence: 1499,
+            priceDisplayStyle: FuelStore.loadPriceDisplayStyle(),
+            distanceKM: 8.0,
+            lat: 51.5,
+            lng: -0.12,
+            updatedAt: Date()
+        )
+        let attrs = FuelBoardLiveActivityAttributes()
+        do {
+            let activity = try Activity.request(
+                attributes: attrs,
+                content: .init(state: state, staleDate: nil),
+                pushType: nil
+            )
+            print("QA-LIVE-ACTIVITY STARTED id=\(activity.id)")
+        } catch {
+            print("QA-LIVE-ACTIVITY FAILED: \(error)")
+        }
+    }
+    #endif
+
     /// Handles deep links that end up in the app. Widget taps arrive here in
     /// two cases:
     ///   - legacy/cached widget timelines using the `fuelboard://` relay, or

FuelBoard/LiveActivityManager.swift

@@ -57,7 +57,7 @@ enum LiveActivityManager {
             brand: best.brand,
             pricePence: price,
             priceDisplayStyle: priceDisplayStyle ?? FuelStore.loadPriceDisplayStyle(),
-            distanceKM: best.distanceKM(to: location.lat, lng2: location.lng),
+            distanceKM: FuelStore.displayDistanceKM(station: best, userLat: location.lat, userLng: location.lng),
             lat: best.lat,
             lng: best.lng,
             updatedAt: Date()
@@ -73,7 +73,9 @@ enum LiveActivityManager {
                 currentStartDate = nil
                 start(attributes: attributes, state: state)
             } else {
-                Task { await current.update(using: state) }
+                Task {
+                    await current.update(.init(state: state, staleDate: nil))
+                }
             }
         } else {
             start(attributes: attributes, state: state)

FuelBoard/RoadDistanceService.swift

@@ -0,0 +1,102 @@
+// RoadDistanceService.swift — computes Apple-Maps-matched ROAD distances for
+// nearby stations and caches them (keychain) so widgets + Live Activity can
+// show real driving distance instead of straight-line haversine.
+//
+// Runs only in the APP: MKDirections is network-bound and the widget extension
+// has a tiny execution budget + a ~40-70/day refresh budget, so routing belongs
+// here, not in the widget. The widget/Live Activity just read the cache.
+//
+// Throttling: recompute at most every `throttleMinutes`, or when the user has
+// moved `moveThresholdMeters` from where the cache was built. Bounded to the
+// `candidatesPerPass` nearest stations so a pass stays a handful of route calls.
+
+import Foundation
+import MapKit
+import WidgetKit
+
+enum RoadDistanceService {
+    /// Upper bound on stations routed per pass, so a pass stays a bounded set of
+    /// route calls. Raised from 12 so stations past the old nearest-12 cutoff
+    /// still get real road distances instead of a straight-line fallback.
+    static let candidatesPerPass = 40
+    /// Only route stations within this straight-line radius (km). Covers the
+    /// largest search radius the UI exposes (15 mi ≈ 24.1 km) plus margin, so
+    /// every station a widget/Live Activity/list can actually show gets routed.
+    static let maxRadiusKM: Double = 25
+    /// Don't route again more often than this (minutes).
+    static let throttleMinutes: Double = 10
+    /// Recompute when the user moves more than this (metres) from the last
+    /// source location.
+    static let moveThresholdMeters: Double = 400
+
+    /// Refreshes the cached road distances for the in-radius stations around
+    /// `lat`/`lng`. Throttled by time + distance; safe to call on every fix.
+    static func refreshIfNeeded(stations: [FuelStation], lat: Double, lng: Double) async {
+        guard !stations.isEmpty else { return }
+
+        // Throttle: keep cached values when fresh and the user hasn't moved far.
+        if let cache = FuelStore.loadRoadDistances() {
+            let elapsed = Date().timeIntervalSince1970 - cache.updatedAt
+            let movedMeters = haversineMeters(cache.sourceLat, cache.sourceLng, lat, lng)
+            if elapsed < throttleMinutes * 60 && movedMeters < moveThresholdMeters {
+                return
+            }
+        }
+
+        // Candidate stations: the nearest-by-straight-line subset that the UI
+        // could actually display, capped so a pass stays bounded.
+        let nearest = stations
+            .sorted { $0.distanceKM(to: lat, lng2: lng) < $1.distanceKM(to: lat, lng2: lng) }
+            .prefix(candidatesPerPass)
+            .filter { $0.distanceKM(to: lat, lng2: lng) <= maxRadiusKM }
+
+        let origin = CLLocationCoordinate2D(latitude: lat, longitude: lng)
+        var entries: [String: CachedRoadDistance] = [:]
+        for station in nearest {
+            let dest = CLLocationCoordinate2D(latitude: station.lat, longitude: station.lng)
+            if let meters = await roadMeters(from: origin, to: dest) {
+                // Store the exact pin that was routed so the display layer can
+                // refuse to serve this value if the station later appears with
+                // a different coordinate (corrected pin / other data source).
+                entries[station.id] = CachedRoadDistance(meters: meters,
+                                                         lat: station.lat,
+                                                         lng: station.lng)
+            }
+        }
+        guard !entries.isEmpty else { return }
+
+        FuelStore.saveRoadDistances(sourceLat: lat, sourceLng: lng, entries: entries)
+        // Wake the widgets so the new road distances surface immediately.
+        WidgetCenter.shared.reloadAllTimelines()
+    }
+
+    /// Driving distance (metres) between two coordinates via Apple Maps routing.
+    private static func roadMeters(from: CLLocationCoordinate2D, to: CLLocationCoordinate2D) async -> Double? {
+        let request = MKDirections.Request()
+        request.source = MKMapItem(location: CLLocation(latitude: from.latitude,
+                                                       longitude: from.longitude),
+                                   address: nil)
+        request.destination = MKMapItem(location: CLLocation(latitude: to.latitude,
+                                                            longitude: to.longitude),
+                                        address: nil)
+        request.transportType = .automobile
+        request.requestsAlternateRoutes = false
+        do {
+            let response = try await MKDirections(request: request).calculate()
+            return response.routes.first?.distance
+        } catch {
+            return nil
+        }
+    }
+
+    /// Straight-line haversine distance between two coordinates, in metres.
+    private static func haversineMeters(_ lat1: Double, _ lng1: Double, _ lat2: Double, _ lng2: Double) -> Double {
+        let r = 6371000.0
+        let dLat = (lat2 - lat1) * .pi / 180
+        let dLng = (lng2 - lng1) * .pi / 180
+        let a = sin(dLat / 2) * sin(dLat / 2) +
+                cos(lat1 * .pi / 180) * cos(lat2 * .pi / 180) *
+                sin(dLng / 2) * sin(dLng / 2)
+        return r * 2 * atan2(sqrt(a), sqrt(1 - a))
+    }
+}

FuelBoard/SettingsView.swift

@@ -18,6 +18,7 @@ struct SettingsView: View {
     @ObservedObject var tipStore: TipStore
     @Binding var distanceUnit: DistanceUnit
     @Binding var priceDisplayStyle: PriceDisplayStyle
+    @Binding var dataRefreshMode: DataRefreshMode
     /// The fuel + radius currently configured for alerts (mirrors the Alerts
     /// tab) so the test notification matches what real alerts will say.
     var alertsFuel: FuelType = .e10
@@ -120,6 +121,29 @@ struct SettingsView: View {
                     Text("Distances and search radii across the app, widget and alerts are shown in this unit. Prices can be shown as on a station sign (129.9) or in pounds and pence (£1.29⁹/L).")
                 }
 
+                Section {
+                    Picker("Data checking", selection: $dataRefreshMode) {
+                        ForEach(DataRefreshMode.allCases) { mode in
+                            Text(mode.displayName).tag(mode)
+                        }
+                    }
+                    .pickerStyle(.segmented)
+                    .onChange(of: dataRefreshMode) { _, newValue in
+                        FuelStore.saveDataRefreshMode(newValue)
+                        SmartDataRefreshScheduler.scheduleNextIfNeeded()
+                    }
+                    VStack(alignment: .leading, spacing: 8) {
+                        Text(dataRefreshMode.summary)
+                        Text("Background checks are best-effort and happen only when iOS allows, so timing is not exact.")
+                            .foregroundStyle(.secondary)
+                    }
+                    .font(.footnote)
+                } header: {
+                    Text("Data checking")
+                } footer: {
+                    Text("Standard saves battery and refreshes price data up to twice daily. Smart checks for newer data more often in the background and only refreshes full prices when an update is available.")
+                }
+
                 Section {
                     Button {
                         onShowOnboarding()

FuelBoard/SiriShortcuts.swift

@@ -125,7 +125,7 @@ struct CheapestFuelIntent: AppIntent {
 struct DirectionsToCheapestFuelIntent: AppIntent {
     static var title: LocalizedStringResource = "Directions to Cheapest Fuel Near Me"
     static var description = IntentDescription(
-        "Opens Apple Maps directions to the cheapest station selling a fuel near you, using the latest cached prices."
+        "Opens directions to the cheapest station selling a fuel near you, using the latest cached prices."
     )
 
     @Parameter(title: "Fuel")
@@ -285,7 +285,7 @@ struct FavouriteFuelPriceIntent: AppIntent {
 struct DirectionsToFavouriteFuelIntent: AppIntent {
     static var title: LocalizedStringResource = "Directions to Favourite Fuel Station"
     static var description = IntentDescription(
-        "Opens Apple Maps directions to your top favourite station for a fuel."
+        "Opens directions to your top favourite station for a fuel."
     )
 
     @Parameter(title: "Fuel")
@@ -404,7 +404,7 @@ struct FuelMessage: View {
 /// Shortcut slot and adds no phrase.
 struct OpenDirectionsIntent: AppIntent {
     static var title: LocalizedStringResource = "Directions"
-    static var description = IntentDescription("Opens Apple Maps directions to the station.")
+    static var description = IntentDescription("Opens directions to the station.")
     static var isDiscoverable: Bool = false
 
     @Parameter var stationName: String
@@ -489,19 +489,14 @@ struct FuelMessageSnippetIntent: SnippetIntent {
 
 struct FuelBoardShortcuts: AppShortcutsProvider {
     static var appShortcuts: [AppShortcut] {
-        // Generic parameterized shortcut — matches whatever fuel word Siri
+        // NOTE (2026-08-20): the generic parameterized shortcut ("cheapest
-        // resolves. Parameter resolution is flaky on-device ("cheapest diesel"
+        // ${fuel}") was REMOVED. It competed with the fixed-fuel literal-word
-        // matched, "cheapest unleaded" didn't), which is why the fixed-fuel
+        // shortcuts for the same intent (parameter resolution was already flaky
-        // entries below carry the fuel word as LITERAL phrase text.
+        // on-device), which degraded Siri's NLU ranking and caused the
-        AppShortcut(
+        // hit-and-miss "can't do that, searching in app" fallback. Now Siri
-            intent: CheapestFuelIntent(),
+        // routes on literal fuel words only, and the freed slot keeps us under
-            phrases: [
+        // the 10-shortcut cap. Every phrase carries .applicationName (iOS 26
-                "Ask \(.applicationName) what's the cheapest \(\.$fuel) near me",
+        // metadata-processor requirement) and mirrors how people actually ask.
-            ],
-            shortTitle: "Cheapest Fuel",
-            systemImageName: "fuelpump"
-        )
-
         AppShortcut(
             intent: CheapestFuelIntent(fuel: .e10),
             phrases: [
@@ -509,6 +504,10 @@ struct FuelBoardShortcuts: AppShortcutsProvider {
                 "Ask \(.applicationName) for the cheapest petrol near me",
                 "Find the cheapest petrol near me \(.applicationName)",
                 "Find the cheapest unleaded near me \(.applicationName)",
+                "What's the cheapest unleaded near me \(.applicationName)",
+                "What's the cheapest petrol near me \(.applicationName)",
+                "Cheapest unleaded near me \(.applicationName)",
+                "Where's the cheapest petrol \(.applicationName)",
             ],
             shortTitle: "Cheapest Unleaded",
             systemImageName: "fuelpump"

FuelBoard/SmartDataRefresh.swift

@@ -0,0 +1,88 @@
+import BackgroundTasks
+import Foundation
+import WidgetKit
+
+enum SmartDataRefreshScheduler {
+    static let taskIdentifier = "com.apt.fuelboard.smart-refresh"
+
+    static func register() {
+        BGTaskScheduler.shared.register(forTaskWithIdentifier: taskIdentifier, using: nil) { task in
+            guard let task = task as? BGAppRefreshTask else {
+                task.setTaskCompleted(success: false)
+                return
+            }
+            handle(task)
+        }
+    }
+
+    static func scheduleNextIfNeeded() {
+        BGTaskScheduler.shared.cancel(taskRequestWithIdentifier: taskIdentifier)
+        guard FuelStore.loadDataRefreshMode() == .smart else { return }
+        let request = BGAppRefreshTaskRequest(identifier: taskIdentifier)
+        request.earliestBeginDate = Date(timeIntervalSinceNow: FuelStore.smartProbeInterval)
+        do {
+            try BGTaskScheduler.shared.submit(request)
+        } catch {
+            #if DEBUG
+            print("SMART-REFRESH schedule failed: \(error)")
+            #endif
+        }
+    }
+
+    private static func handle(_ task: BGAppRefreshTask) {
+        scheduleNextIfNeeded()
+        let refreshTask = Task {
+            let success = await SmartDataRefreshCoordinator.runBackgroundProbe()
+            task.setTaskCompleted(success: success)
+        }
+        task.expirationHandler = {
+            refreshTask.cancel()
+        }
+    }
+}
+
+enum SmartDataRefreshCoordinator {
+    @discardableResult
+    static func runBackgroundProbe(now: Date = Date()) async -> Bool {
+        guard FuelStore.loadDataRefreshMode() == .smart else { return true }
+        guard FuelStore.isSmartProbeDue(now: now) || FuelStore.loadStations().isEmpty else {
+            return true
+        }
+        FuelStore.saveLastSmartProbe(now)
+        guard !Task.isCancelled else { return false }
+
+        guard let latest = await FuelHistoryStore.fetchLatest() else {
+            return false
+        }
+
+        let latestDay = latest.availableTo ?? latest.date
+        let latestUpdated = latest.dataUpdated
+        let cachedDay = MirrorFuelProvider.loadDumpCache()?.day
+        let savedUpdated = FuelStore.loadDataUpdated()
+        let shouldFetchFullDump = FuelStore.loadStations().isEmpty
+            || !FuelStore.isCacheFresh(now: now)
+            || (latestDay != nil && latestDay != cachedDay)
+            || (latestUpdated != nil && latestUpdated != savedUpdated)
+
+        guard shouldFetchFullDump, !Task.isCancelled else { return true }
+
+        do {
+            let fetched = try await FuelPriceProvider.active.fetchStations(
+                near: nil,
+                lng: nil,
+                fuel: FuelStore.loadSelectedFuel(),
+                radiusKM: nil
+            )
+            guard !Task.isCancelled else { return false }
+            FuelStore.saveStations(fetched)
+            FuelStore.saveLastRefresh(now)
+            if let meta = LiveChainProvider.latestMeta {
+                FuelStore.saveRelayMeta(meta)
+            }
+            WidgetCenter.shared.reloadAllTimelines()
+            return true
+        } catch {
+            return false
+        }
+    }
+}

FuelBoard/StationsView.swift

@@ -317,17 +317,6 @@ extension FuelType {
         case .diesel: return "Diesel"
         }
     }
-
-    /// Fuel colour wheel (user-chosen palette): green = unleaded (#30D158),
-    /// yellow = premium (#FFD60A), cyan = diesel (#64D2FF). Used for the
-    /// fuel-type tab icons and the title icon.
-    var tintColor: Color {
-        switch self {
-        case .e10: return Color(red: 48/255.0, green: 209/255.0, blue: 88/255.0)      // #30D158
-        case .e5: return Color(red: 255/255.0, green: 214/255.0, blue: 10/255.0)      // #FFD60A
-        case .diesel: return Color(red: 100/255.0, green: 210/255.0, blue: 255/255.0) // #64D2FF
-        }
-    }
 }
 
 /// Fuel-type selector styled like a segmented control, with a coloured pump

FuelBoard/TrendsView.swift

@@ -25,6 +25,7 @@ struct TrendsView: View {
     var onHistoryRecovered: (() -> Void)? = nil
 
     @Environment(\.dismiss) private var dismiss
+    @Environment(\.accessibilityReduceMotion) private var reduceMotion
 
     @State private var fuel: FuelType = .e10
     @State private var rangeDays: Int = 30
@@ -34,6 +35,13 @@ struct TrendsView: View {
     @State private var loadFailed = false
     @State private var firstSnapshot: String?
 
+    /// Per-series draw-in waterline: maps stationID → how many leading points
+    /// are revealed, so each line traces left→right on first appearance.
+    /// Series reveal in a short staggered cascade so the draw is clearly
+    /// visible even with only 2 points per line. Stays full after the first
+    /// reveal so range/mode switches morph instead of re-tracing.
+    @State private var revealed: [String: Int] = [:]
+
     /// Seeded from `selectedFuel` (the fuel the tab was on) so the sheet
     /// opens where the user was — same pattern as FavouritesView.
     init(favourites: [FavouriteEntry],
@@ -157,7 +165,13 @@ struct TrendsView: View {
             // pointer probe already done above.
             loadFailed = firstSnapshot == nil
         }
+        // Always redraw the lines on a selection change. `.task(id:)` fires on
+        // the initial appear and on every fuel/range switch (there's no
+        // periodic refetch in this sheet), so a staggered per-series draw-in
+        // replays exactly when the user picks 7/30/90 (or switches fuel) while
+        // a width-stable morph keeps the x-axis/y-range from jumping abruptly.
         series = fetched
+        revealSeries(fetched)
         // A failure with no data IS a connection problem — raise the global
         // banner so the user isn't stuck with a silent retry state. Success
         // clears it (only if the banner is the connection banner).
@@ -168,6 +182,32 @@ struct TrendsView: View {
         }
     }
 
+    /// Replays the staggered per-series draw-in for the given histories:
+    /// resets the waterline, then cascades each station's line left→right,
+    /// 0.18s apart, on every range/fuel selection. Reduce Motion jump-cuts
+    /// straight to the full state.
+    private func revealSeries(_ histories: [StationHistory]) {
+        let hasPoints = histories.contains { !$0.points.isEmpty }
+        guard hasPoints else { return }
+        if reduceMotion {
+            revealed = histories.reduce(into: [:]) { $0[$1.stationID] = $1.points.count }
+            return
+        }
+        revealed = [:]
+        let cascadeNS = UInt64(0.18 * 1_000_000_000)
+        for (i, h) in histories.enumerated() {
+            let sid = h.stationID
+            let total = h.points.count
+            Task {
+                try? await Task.sleep(nanoseconds: UInt64(i) * cascadeNS)
+                guard !Task.isCancelled else { return }
+                withAnimation(.easeOut(duration: 0.5)) {
+                    revealed[sid] = total
+                }
+            }
+        }
+    }
+
     private func yLabel(_ pence: Double) -> String {
         switch mode {
         case .price:
@@ -330,6 +370,9 @@ struct TrendsView: View {
                     .font(.system(size: 30, weight: .bold, design: .default))
                     .monospacedDigit()
                     .foregroundStyle(.primary)
+                    // Roll the digits to the new figure on range/mode change
+                    // (fires inside the animated transaction above).
+                    .contentTransition(.numericText(value: headAvg))
                 if let delta = headlineDelta, delta != 0 {
                     Label(
                         "\(deltaIsGood ? "−" : "+")\(abs(delta), specifier: "%.1f")p",
@@ -389,13 +432,13 @@ struct TrendsView: View {
         // type-checker's budget.)
         Chart {
             ForEach(displaySeries) { history in
-                ForEach(history.points) { point in
+                ForEach(history.points.prefix(revealed[history.stationID] ?? 0)) { point in
                     areaMark(point, series: history.name,
                              color: seriesColor(index(of: history.stationID)))
                 }
             }
             ForEach(displaySeries) { history in
-                ForEach(history.points) { point in
+                ForEach(history.points.prefix(revealed[history.stationID] ?? 0)) { point in
                     lineMark(point, series: history.name,
                              color: seriesColor(index(of: history.stationID)))
                 }
@@ -424,6 +467,9 @@ struct TrendsView: View {
             }
         }
         .frame(height: 190)
+        // Price ↔ vs-cheapest is a pure view toggle (no network): animate the
+        // lines + axis gliding to the rebased series.
+        .animation(.easeInOut(duration: 0.35), value: mode)
     }
 
     /// One gradient-filled area band under a single point of a series.

FuelBoardTests/Sources/FuelBoardShared/DataRefreshMode.swift

@@ -0,0 +1,24 @@
+import Foundation
+
+enum DataRefreshMode: String, CaseIterable, Identifiable {
+    case standard
+    case smart
+
+    var id: String { rawValue }
+
+    var displayName: String {
+        switch self {
+        case .standard: return "Standard"
+        case .smart: return "Smart"
+        }
+    }
+
+    var summary: String {
+        switch self {
+        case .standard:
+            return "Saves battery. Refreshes price data up to twice daily."
+        case .smart:
+            return "Checks for newer data more often in the background and refreshes full prices only when an update is available."
+        }
+    }
+}

FuelBoardTests/Tests/FuelBoardSharedTests/FuelBoardTests.swift

@@ -620,3 +620,82 @@ final class OfflineDataLabelTests: XCTestCase {
         XCTAssertNil(FuelStore.offlineDataLabel(from: "not-a-date"))
     }
 }
+
+// MARK: - Road distance cache
+
+final class RoadDistanceCacheTests: XCTestCase {
+    override func setUp() {
+        super.setUp()
+        // Keychain persists across invocations, so a cache left by an earlier
+        // test or run would pollute these. Overwrite with an empty, far-away
+        // cache (source at (0,0)) so every test starts from a clean slate.
+        FuelStore.saveRoadDistances(sourceLat: 0, sourceLng: 0, entries: [:])
+    }
+
+    private func station(_ id: String, _ lat: Double, _ lng: Double) -> FuelStation {
+        FuelStation(id: id, name: id, brand: "X", address: "", postcode: "",
+                    lat: lat, lng: lng, prices: [:], priceUpdated: nil)
+    }
+
+    func testDisplayDistanceFallsBackToStraightLineWhenNoCache() {
+        // London user, station ~ London -> no cache -> straight-line haversine.
+        let s = station("a", 51.5074, -0.1278)
+        let km = FuelStore.displayDistanceKM(station: s, userLat: 51.6, userLng: -0.1)
+        XCTAssertEqual(km, s.distanceKM(to: 51.6, lng2: -0.1), accuracy: 0.0001)
+    }
+
+    func testRoadDistanceUsedWhenCachedNear() {
+        let s = station("a", 51.5074, -0.1278)
+        // Cache a road distance of 3.2 km for this station from the user's fix.
+        FuelStore.saveRoadDistances(sourceLat: 51.6, sourceLng: -0.1,
+                                    entries: ["a": .init(meters: 3200, lat: 51.5074, lng: -0.1278)])
+        let km = FuelStore.displayDistanceKM(station: s, userLat: 51.6, userLng: -0.1)
+        XCTAssertEqual(km, 3.2, accuracy: 0.0001)
+    }
+
+    func testRoadDistanceNilWhenOriginFar() {
+        let s = station("a", 51.5074, -0.1278)
+        // Cache built in London, but the user is now ~200 km away -> stale.
+        FuelStore.saveRoadDistances(sourceLat: 51.5074, sourceLng: -0.1278,
+                                    entries: ["a": .init(meters: 3200, lat: 51.5074, lng: -0.1278)])
+        let meters = FuelStore.roadDistanceMeters(for: s, userLat: 53.4808, userLng: -2.2426)
+        XCTAssertNil(meters)
+        // And display falls back to straight-line.
+        let km = FuelStore.displayDistanceKM(station: s, userLat: 53.4808, userLng: -2.2426)
+        XCTAssertEqual(km, s.distanceKM(to: 53.4808, lng2: -2.2426), accuracy: 0.0001)
+    }
+
+    func testRoadDistanceUsedForOtherStationNotFound() {
+        FuelStore.saveRoadDistances(sourceLat: 51.6, sourceLng: -0.1,
+                                    entries: ["a": .init(meters: 3200, lat: 51.5074, lng: -0.1278)])
+        // A station that isn't in the cache falls back to straight-line.
+        let s = station("z", 51.51, -0.13)
+        let km = FuelStore.displayDistanceKM(station: s, userLat: 51.6, userLng: -0.1)
+        XCTAssertEqual(km, s.distanceKM(to: 51.6, lng2: -0.1), accuracy: 0.0001)
+    }
+
+    func testRoadDistanceNotServedWhenStationPinDiffers() {
+        // Route a road distance to station "a" at pin P1.
+        FuelStore.saveRoadDistances(sourceLat: 51.6, sourceLng: -0.1,
+                                    entries: ["a": .init(meters: 3200, lat: 51.5074, lng: -0.1278)])
+        // The SAME station id appears with a moved pin (corrected coordinate /
+        // different embedded vs live source): the cached route to P1 must NOT
+        // be served — it belongs to a different location.
+        let moved = station("a", 51.5400, -0.1600)
+        let km = FuelStore.displayDistanceKM(station: moved, userLat: 51.6, userLng: -0.1)
+        XCTAssertEqual(km, moved.distanceKM(to: 51.6, lng2: -0.1), accuracy: 0.0001,
+                       "road value routed to the old pin leaked onto a different coordinate")
+    }
+}
+
+// MARK: - Install identity
+
+final class InstallIdentityTests: XCTestCase {
+    func testFreshInstallIsStableAfterFirstCall() {
+        // The first call seeds the common install id (local == keychain), so
+        // any subsequent call in the same process must report NOT-fresh. This
+        // holds regardless of persisted keychain/defaults state from prior runs.
+        _ = FuelStore.isFreshInstall()
+        XCTAssertFalse(FuelStore.isFreshInstall())
+    }
+}

FuelBoardWidgets/FuelBoardLiveActivityView.swift

@@ -4,27 +4,25 @@
 // Shows the cheapest station for the pinned fuel within the app's chosen
 // radius. Tapping anywhere opens Apple Maps directions to that station.
 //
-// ADAPTIVE LAYOUT: ActivityConfiguration shares ONE content view across the
+// ADAPTIVE LAYOUT: the Lock Screen body provides two layouts and lets
-// Lock Screen, banner, and the CarPlay small slot — there is no per-platform
+// ViewThatFits pick by available width, but the narrow `.small` family is NOT
-// closure. So this view provides two layouts and lets ViewThatFits pick by
+// declared (see note on the config), so iPhone/iPad always render the full
-// available width:
+// three-column card (`richBody`) with proper text sizes. `compactBody` is kept
-//   • richBody  — the full three-column design (glyph · fuel+station · price),
+// as a safety fallback should any surface ever hand this view a narrow width.
-//                 wins wherever there's Lock Screen width (it carries an
+//
-//                 explicit minWidth so it can never be squeezed into the car).
+// IMPORTANT: `.supplementalActivityFamilies([.small])` is deliberately absent —
-//   • compactBody — a minimal price-strip (glyph+fuel+price, station caption
+// it made iOS render the squeezed `.small` card on the iPhone Lock Screen.
-//                 below) that wins in the CarPlay/Apple Watch Smart Stack
+// CarPlay's small form comes from the Dynamic Island compact closures.
-//                 small slot.
 
 import ActivityKit
 import SwiftUI
 import WidgetKit
 
 /// The Live Activity itself — registered in the widget bundle alongside the
-/// regular price widget. No CarPlay entitlement involved: this renders on the
+/// regular price widget. No CarPlay entitlement involved: renders on the
-/// Lock Screen, Dynamic Island, and the car display (CarPlay Ultra, iOS 26+).
+/// Lock Screen (full-width card on iPhone/iPad) and the Dynamic Island
-/// `.supplementalActivityFamilies([.small])` makes it eligible for the car's
+/// (incl. the island's compact form used in the car, display-only — FuelBoard
-/// small Live Activity slot — display-only there (FuelBoard is not a
+/// is not a CarPlay-enabled app, so car-side taps can't launch anything).
-/// CarPlay-enabled app, so car-side taps can't launch anything).
 struct FuelBoardLiveActivity: Widget {
     var body: some WidgetConfiguration {
         ActivityConfiguration(for: FuelBoardLiveActivityAttributes.self) { context in
@@ -43,7 +41,7 @@ struct FuelBoardLiveActivity: Widget {
                 }
             } compactLeading: {
                 Image(systemName: "fuelpump.fill")
-                    .foregroundStyle(.green)
+                    .foregroundStyle(context.state.fuel.tintColor)
             } compactTrailing: {
                 FuelBoardLiveActivityPriceView(context: context)
             } minimal: {
@@ -52,6 +50,14 @@ struct FuelBoardLiveActivity: Widget {
             }
         }
         .supplementalActivityFamilies([.small])
+        // Why `.small` is kept: it lets the SHARED body render a compact form
+        // in genuinely small slots (CarPlay small / Apple Watch smart stack)
+        // instead of falling back to the Dynamic Island compact closure —
+        // which could NOT show the station distance the user wants on CarPlay.
+        // The full-width iPhone/iPad card is protected by the `richMinWidth`
+        // gate on `richBody` + its flexible, truncating middle column, so
+        // iPhone/iPad still get the full card; only truly small space picks
+        // the compact strip below.
     }
 }
 
@@ -59,27 +65,59 @@ struct FuelBoardLiveActivity: Widget {
 private struct FuelBoardLiveActivityView: View {
     let context: ActivityViewContext<FuelBoardLiveActivityAttributes>
 
+    /// Below this ACTUAL proposed width we show the compact strip (CarPlay
+    /// small / Watch smart stack); at/above it we show the full card. The
+    /// decision is made from the real width the system hands the body, read
+    /// via a background GeometryReader — NOT ViewThatFits ideal-width
+    /// measurement (that's broken for truncating text: a long station name
+    /// inflated the "ideal" width past the iPhone Lock Screen and collapsed
+    /// the full card).
+    private let compactWidthThreshold: CGFloat = 280
+
+    /// Measured slot width (drives the rich-vs-compact branch). Measured in a
+    /// background GeometryReader so it does NOT act as the layout container:
+    /// a GeometryReader root pins content top-left, and forcing a
+    /// maxHeight:.infinity frame on it over-claims the whole proposed height,
+    /// centring the content below true vertical centre (bigger gap above) on
+    /// the Lock Screen. Measuring behind the scenes keeps the content
+    /// intrinsic-sized so the system vertically centres it itself.
+    @State private var slotWidth: CGFloat = 400
+
     var body: some View {
         Link(destination: context.state.mapsURL) {
-            ViewThatFits(in: .horizontal) {
+            Group {
-                // rich first — wins on full-width Lock Screen / banner
+                // Branch on the ACTUAL proposed width. iPhone/iPad offer the
-                richBody
+                // full Lock Screen width (>= threshold) → rich card, no matter
-                    // CarPlay / Watch small slot is far narrower than this,
+                // how long the station name is. Truly small slots (CarPlay /
-                    // so ViewThatFits reliably falls through to compactBody.
+                // Watch) offer much less → compact strip.
-                    .frame(minWidth: 280)
+                if slotWidth >= compactWidthThreshold {
-                // compact fallback — the car's small supplemental slot
+                    richBody
-                compactBody
+                } else {
+                    compactBody
+                }
             }
+            // Fill the card width so the background measure reads the real
+            // slot, not the intrinsic content width.
+            .frame(maxWidth: .infinity)
+            // Side-channel width measurement — never the layout container.
+            .background(
+                GeometryReader { geo in
+                    Color.clear
+                        .onAppear { slotWidth = geo.size.width }
+                        .onChange(of: geo.size.width) { _, w in slotWidth = w }
+                }
+            )
         }
     }
 
     /// Full three-column design (unchanged): brand glyph · fuel+station · price.
     private var richBody: some View {
         HStack(spacing: 12) {
-            // LEFT — station brand glyph
+            // LEFT — station brand glyph: the fuel-tinted pump on its own. No
-            Image(systemName: "fuelpump.circle.fill")
+            // background circle behind it (user request).
-                .font(.system(size: 32))
+            Image(systemName: "fuelpump.fill")
-                .foregroundStyle(.green, .white)
+                .font(.system(size: 28, weight: .semibold))
+                .foregroundStyle(context.state.fuel.tintColor)
                 .frame(width: 40, height: 40)
 
             // MIDDLE — fuel + station
@@ -90,6 +128,8 @@ private struct FuelBoardLiveActivityView: View {
                     .font(.subheadline)
                     .foregroundStyle(.secondary)
                     .lineLimit(1)
+                    .minimumScaleFactor(0.75)
+                    .truncationMode(.tail)
             }
             .frame(maxWidth: .infinity, alignment: .leading)
 
@@ -106,16 +146,15 @@ private struct FuelBoardLiveActivityView: View {
         .padding()
     }
 
-    /// Minimal strip for the small CarPlay / Watch Smart Stack slot:
+    /// Minimal strip for small space (CarPlay small / Watch smart stack):
-    /// glyph + fuel left, bold price right, truncated station below.
+    /// fuel type + bold price on one line, station · distance below.
+    /// Deliberately no app name and no "Tap for directions" — CarPlay is
+    /// display-only, and the user's asks here are just fuel + price + distance.
     private var compactBody: some View {
         VStack(alignment: .leading, spacing: 3) {
             HStack(spacing: 5) {
-                Image(systemName: "fuelpump.fill")
-                    .font(.caption2)
-                    .foregroundStyle(.green)
                 Text(context.state.fuel.displayName)
-                    .font(.caption2.weight(.semibold))
+                    .font(.caption.bold())
                     .lineLimit(1)
                 Spacer(minLength: 4)
                 FuelStore.priceTextAttributed(context.state.pricePence,
@@ -127,6 +166,8 @@ private struct FuelBoardLiveActivityView: View {
                 .font(.system(size: 9))
                 .foregroundStyle(.secondary)
                 .lineLimit(1)
+                .minimumScaleFactor(0.7)
+                .truncationMode(.tail)
         }
         .padding(8)
     }

Shared/DataRefreshMode.swift

@@ -0,0 +1,24 @@
+import Foundation
+
+enum DataRefreshMode: String, CaseIterable, Identifiable {
+    case standard
+    case smart
+
+    var id: String { rawValue }
+
+    var displayName: String {
+        switch self {
+        case .standard: return "Standard"
+        case .smart: return "Smart"
+        }
+    }
+
+    var summary: String {
+        switch self {
+        case .standard:
+            return "Saves battery. Refreshes price data up to twice daily."
+        case .smart:
+            return "Checks for newer data more often in the background and refreshes full prices only when an update is available."
+        }
+    }
+}

Shared/FuelPriceWidgetViews.swift

@@ -89,7 +89,7 @@ struct FuelPriceWidgetContent: View {
                 FuelStore.priceTextAttributed(price, size: 26, weight: .bold, color: .green)
             }
             if let location = entry.location {
-                Text(entry.unit.format(station.distanceKM(to: location.lat, lng2: location.lng)) + " away")
+                Text(entry.unit.format(FuelStore.displayDistanceKM(station: station, userLat: location.lat, userLng: location.lng)) + " away")
                     .font(.caption2)
                     .foregroundStyle(.secondary)
             } else {
@@ -148,7 +148,7 @@ struct FuelPriceWidgetContent: View {
                 .font(.caption.weight(.semibold))
                 .lineLimit(1)
             if let location = entry.location {
-                Text(entry.unit.format(station.distanceKM(to: location.lat, lng2: location.lng)))
+                Text(entry.unit.format(FuelStore.displayDistanceKM(station: station, userLat: location.lat, userLng: location.lng)))
                     .font(.caption2)
                     .foregroundStyle(.secondary)
             }

Shared/FuelStore.swift

@@ -8,6 +8,7 @@
 //   keychain → app-group defaults → fallback.
 
 import Foundation
+import SwiftUI
 import Security
 #if canImport(AppIntents)
 import AppIntents
@@ -99,6 +100,20 @@ enum FuelType: String, Codable, CaseIterable, Identifiable {
     }
 }
 
+/// Fuel colour wheel (user-chosen palette): green = unleaded (#30D158),
+/// yellow = premium (#FFD60A), cyan = diesel (#64D2FF). Lives here in Shared
+/// so the app, widget, and Live Activity all tint the pump/fuel glyphs from one
+/// definition.
+extension FuelType {
+    var tintColor: Color {
+        switch self {
+        case .e10: return Color(red: 48/255.0, green: 209/255.0, blue: 88/255.0)      // #30D158
+        case .e5: return Color(red: 255/255.0, green: 214/255.0, blue: 10/255.0)      // #FFD60A
+        case .diesel: return Color(red: 100/255.0, green: 210/255.0, blue: 255/255.0) // #64D2FF
+        }
+    }
+}
+
 #if canImport(AppIntents)
 extension FuelType: AppEnum {}
 #endif
@@ -355,6 +370,8 @@ struct FuelStore {
     static let liveActivityRadiusKey = "fuelboard.liveActivityRadiusMiles" // Int miles (5/10/15)
     static let onboardingCompletedKey = "fuelboard.onboardingCompleted" // Bool
     static let lastRefreshKey = "fuelboard.lastRefresh"      // TimeInterval (seconds since 1970)
+    static let dataRefreshModeKey = "fuelboard.dataRefreshMode" // DataRefreshMode raw value
+    static let lastSmartProbeKey = "fuelboard.lastSmartProbe" // TimeInterval (seconds since 1970)
     static let relaySourceKey = "fuelboard.relaySource"      // String — "api" | "csv"
     static let stationCountKey = "fuelboard.stationCount"    // String — station count
     static let dataUpdatedKey = "fuelboard.dataUpdated"      // String — govUK dataset update time
@@ -846,10 +863,24 @@ struct FuelStore {
         saveString(enabled ? "1" : "0", service: liveActivityFollowSearchKey)
     }
 
-    // MARK: Refresh policy — data is cached; the app only auto-refreshes
+    // MARK: Refresh policy — Standard is cache-first/twice-daily; Smart keeps
-    // twice a day (pull-to-refresh is the manual override).
+    // the same full-dump freshness cap but may probe the tiny mirror pointer
+    // more often in the background and only refresh the full dump if it changed.
 
     static let refreshInterval: TimeInterval = 12 * 60 * 60
+    static let smartProbeInterval: TimeInterval = 4 * 60 * 60
+
+    static func loadDataRefreshMode() -> DataRefreshMode {
+        if let raw = loadString(service: dataRefreshModeKey),
+           let mode = DataRefreshMode(rawValue: raw) {
+            return mode
+        }
+        return .standard
+    }
+
+    static func saveDataRefreshMode(_ mode: DataRefreshMode) {
+        saveString(mode.rawValue, service: dataRefreshModeKey)
+    }
 
     static func loadLastRefresh() -> Date? {
         if let raw = loadString(service: lastRefreshKey), let ts = TimeInterval(raw) {
@@ -862,6 +893,17 @@ struct FuelStore {
         saveString(String(date.timeIntervalSince1970), service: lastRefreshKey)
     }
 
+    static func loadLastSmartProbe() -> Date? {
+        if let raw = loadString(service: lastSmartProbeKey), let ts = TimeInterval(raw) {
+            return Date(timeIntervalSince1970: ts)
+        }
+        return nil
+    }
+
+    static func saveLastSmartProbe(_ date: Date = Date()) {
+        saveString(String(date.timeIntervalSince1970), service: lastSmartProbeKey)
+    }
+
     // MARK: Relay metadata — shown in Settings → About. Written after each
     // successful full fetch so the About section reflects the live source.
 
@@ -914,20 +956,141 @@ struct FuelStore {
     /// True when the cached data is fresh enough that a scheduled auto-refresh
     /// should be skipped (twice-a-day policy).
     static var isCacheFresh: Bool {
+        isCacheFresh(now: Date())
+    }
+
+    static func isCacheFresh(now: Date) -> Bool {
         guard let last = loadLastRefresh() else { return false }
-        return Date().timeIntervalSince(last) < refreshInterval
+        return now.timeIntervalSince(last) < refreshInterval
+    }
+
+    static func isSmartProbeDue(now: Date = Date()) -> Bool {
+        guard let last = loadLastSmartProbe() else { return true }
+        return now.timeIntervalSince(last) >= smartProbeInterval
     }
 
     // MARK: Onboarding — the app shows the intro screen on first launch only
-    // (a test button in the Alerts tab re-opens it). Stored in the app group
+    // (a test button in the Alerts tab re-opens it). Stored KEYCHAIN-FIRST
-    // so the widget can see it too if ever needed.
+    // (with an app-group mirror) for the same reason as favourites/distance
+    // unit: free SideStore accounts don't provision the app-group container,
+    // so an app-group-only flag silently fails to save AND reloads as false,
+    // making onboarding re-appear on every launch. Keychain survives reinstall
+    // and is shared with the extension.
 
     static func loadHasCompletedOnboarding() -> Bool {
-        UserDefaults(suiteName: appGroupSuite)?.bool(forKey: onboardingCompletedKey) ?? false
+        (loadString(service: onboardingCompletedKey) ?? "0") == "1"
     }
 
     static func saveHasCompletedOnboarding(_ completed: Bool) {
-        UserDefaults(suiteName: appGroupSuite)?.set(completed, forKey: onboardingCompletedKey)
+        saveString(completed ? "1" : "0", service: onboardingCompletedKey)
+    }
+
+    // MARK: Install identity — distinguish a genuinely fresh install (where
+    // onboarding should replay) from later launches of the same install.
+
+    /// Keychain copy of the install id (survives reinstall).
+    private static let installIDKey = "fuelboard.installID"
+    /// Local (app-own container) copy — wiped on reinstall, persists across
+    /// normal launches. Free SideStore accounts have no app-group container,
+    /// so this app-own defaults domain is the reliable "same install" signal.
+    private static let localInstallIDKey = "fuelboard.installID.local"
+
+    /// True when this is a first-ever install OR the app was just reinstalled
+    /// (local install id missing/different from the keychain id). Seeds a fresh
+    /// id into both stores so the next launch within the same install is not a
+    /// "fresh install" any more.
+    static func isFreshInstall() -> Bool {
+        let local = UserDefaults.standard.string(forKey: localInstallIDKey)
+        let remote = loadString(service: installIDKey)
+        if let local, let remote, local == remote { return false }
+        // Fresh / mismatched install (or first launch). Pattern a common id so
+        // subsequent launches of this install are recognised as the same one.
+        let id = UUID().uuidString
+        UserDefaults.standard.set(id, forKey: localInstallIDKey)
+        saveString(id, service: installIDKey)
+        return true
+    }
+
+    /// Onboarding should present when it hasn't been completed in this install
+    /// OR this is a freshly-installed app (so the walkthrough replays on a new
+    /// install, e.g. after a SideStore reinstall, without re-showing on every
+    /// ordinary launch). The install check always runs (it seeds the id) rather
+    /// than short-circuiting, so a brand-new install is recorded before the
+    /// user ever fills in onboarding.
+    static func shouldShowOnboarding() -> Bool {
+        let fresh = isFreshInstall()
+        return !loadHasCompletedOnboarding() || fresh
+    }
+
+    // MARK: Road distances (Apple-Maps-matched, computed by the app)
+
+    /// Cached road/routed distances (metres) keyed by station ID, computed by
+    /// the app via MapKit `MKDirections`. Stored in KEYCHAIN (survives on free
+    /// SideStore accounts where the app-group container isn't provisioned) so
+    /// the widget extension can read it too. Widget + Live Activity prefer
+    /// these over straight-line haversine for the displayed distance.
+    static let roadDistancesKey = "fuelboard.roadDistances"
+
+    /// How far (metres) the cache's source location may be from the current
+    /// user position before a cached road distance is treated as stale.
+    static let roadDistanceOriginToleranceMeters: Double = 600
+
+    /// How far (degrees) a station's stored coordinate may drift from the pin
+    /// a road distance was actually routed to before that cached value is
+    /// treated as belonging to a different station. Guards against one data
+    /// source (live fetch, bundled offline dump, or a corrected pin) serving a
+    /// road distance that was computed for a different coordinate under the
+    /// same station ID. ~1e-4 deg ≈ 11 m — tolerates float/rounding jitter but
+    /// catches any real pin change.
+    static let roadDistancePinToleranceDegrees: Double = 1e-4
+
+    static func saveRoadDistances(sourceLat: Double, sourceLng: Double, entries: [String: CachedRoadDistance]) {
+        let cache = RoadDistanceCache(sourceLat: sourceLat, sourceLng: sourceLng,
+                                      updatedAt: Date().timeIntervalSince1970, entries: entries)
+        if let data = try? JSONEncoder().encode(cache) {
+            saveString(data.base64EncodedString(), service: roadDistancesKey)
+        }
+    }
+
+    static func loadRoadDistances() -> RoadDistanceCache? {
+        guard let raw = loadString(service: roadDistancesKey),
+              let data = Data(base64Encoded: raw),
+              let cache = try? JSONDecoder().decode(RoadDistanceCache.self, from: data)
+        else { return nil }
+        return cache
+    }
+
+    /// Cached road distance (metres) to a station from the user's location, or
+    /// nil when not cached / the cache was built too far from where the user
+    /// is now / the station's own pin doesn't match the coordinate that was
+    /// routed.
+    static func roadDistanceMeters(for station: FuelStation, userLat: Double, userLng: Double) -> Double? {
+        guard let cache = loadRoadDistances(),
+              let entry = cache.entries[station.id] else { return nil }
+        // The cache is only valid near the location it was built from.
+        let dLat = (userLat - cache.sourceLat) * .pi / 180
+        let dLng = (userLng - cache.sourceLng) * .pi / 180
+        let r = 6371000.0
+        let a = sin(dLat / 2) * sin(dLat / 2) +
+                cos(cache.sourceLat * .pi / 180) * cos(userLat * .pi / 180) *
+                sin(dLng / 2) * sin(dLng / 2)
+        let originDistanceMeters = r * 2 * atan2(sqrt(a), sqrt(1 - a))
+        guard originDistanceMeters <= roadDistanceOriginToleranceMeters else { return nil }
+        // Pin fingerprint: never serve a routed value for a coordinate we
+        // didn't actually route to. This is the guard that keeps embedded /
+        // live / cached station sets from injecting each other's road metres.
+        guard abs(entry.lat - station.lat) <= roadDistancePinToleranceDegrees,
+              abs(entry.lng - station.lng) <= roadDistancePinToleranceDegrees else { return nil }
+        return entry.meters
+    }
+
+    /// Distance (km) to display for a station: cached ROAD distance when
+    /// available (matches Apple Maps), else straight-line haversine.
+    static func displayDistanceKM(station: FuelStation, userLat: Double, userLng: Double) -> Double {
+        if let meters = roadDistanceMeters(for: station, userLat: userLat, userLng: userLng) {
+            return meters / 1000.0
+        }
+        return station.distanceKM(to: userLat, lng2: userLng)
     }
 
     // MARK: Low-level keychain helpers
@@ -989,3 +1152,23 @@ struct FuelStore {
         loadString(service: "widget.diag.\(intentType)")
     }
 }
+
+/// Cached Apple-Maps road distances for nearby stations (see
+/// A single cached road distance plus the station pin it was routed to. Keeping
+/// the pin lets `roadDistanceMeters` refuse to serve a route computed for a
+/// *different* coordinate under the same ID — the guard that stops embedded /
+/// live / cached station sets cross-contaminating the distance display.
+struct CachedRoadDistance: Codable {
+    let meters: Double
+    let lat: Double
+    let lng: Double
+}
+
+/// `FuelStore.roadDistancesKey`). `entries` maps stationID → road metres +
+/// the routed pin.
+struct RoadDistanceCache: Codable {
+    let sourceLat: Double
+    let sourceLng: Double
+    let updatedAt: TimeInterval
+    let entries: [String: CachedRoadDistance]
+}