Live Activity: price now respects the Price display style — style carried in ContentState (captured at push time, extension renders deterministically instead of re-reading storage), setting change pushes an in-place content update via explicit override (no save-ordering race)

FuelBoard/ContentView.swift

@@ -322,13 +322,21 @@ struct ContentView: View {
                                fuel: alertsFuel, radiusKM: effectiveAlertsRadiusKM)
             }
         }
+        .onChange(of: priceDisplayStyle) { _, newValue in
+            // The pill carries its own display style in content state — push
+            // an update so the running activity re-renders in the new style
+            // immediately. Pass the style explicitly: SettingsView saves it
+            // in its own onChange, whose ordering vs this one isn't guaranteed,
+            // so reading storage here could push the OLD style.
+            updateLiveActivity(priceDisplayStyleOverride: newValue)
+        }
     }
 
     /// Pushes the current best-in-radius station into the Live Activity.
     /// No-op (or ends the activity) when the toggle is off or there's no
     /// location/data yet. Uses the Live Activity's OWN fuel + radius (set in
     /// Settings) — independent of the Stations-tab fuel/distance.
-    private func updateLiveActivity() {
+    private func updateLiveActivity(priceDisplayStyleOverride: PriceDisplayStyle? = nil) {
         // "Follow search" mirrors the Stations-tab distance exactly (no cap —
         // the pill only displays, it doesn't geofence).
         let radiusKM = liveActivityFollowsSearch
@@ -339,7 +347,8 @@ struct ContentView: View {
             fuel: liveActivityFuel,
             radiusKM: radiusKM,
             location: location,
-            enabled: liveActivityEnabled
+            enabled: liveActivityEnabled,
+            priceDisplayStyle: priceDisplayStyleOverride
         )
     }
 

FuelBoard/LiveActivityManager.swift

@@ -28,12 +28,15 @@ enum LiveActivityManager {
 
     /// Recomputes the cheapest-in-radius station and updates the activity.
     /// Passing `enabled: false` (or no usable data) ends any running activity.
+    /// `priceDisplayStyle` overrides the saved style (used when the setting
+    /// just changed and the save may not have landed yet); nil = read storage.
     static func update(
         stations: [FuelStation],
         fuel: FuelType,
         radiusKM: Double,
         location: Coordinate?,
-        enabled: Bool
+        enabled: Bool,
+        priceDisplayStyle: PriceDisplayStyle? = nil
     ) {
         guard enabled, let location else {
             end()
@@ -53,6 +56,7 @@ enum LiveActivityManager {
             stationName: best.name,
             brand: best.brand,
             pricePence: price,
+            priceDisplayStyle: priceDisplayStyle ?? FuelStore.loadPriceDisplayStyle(),
             distanceKM: best.distanceKM(to: location.lat, lng2: location.lng),
             lat: best.lat,
             lng: best.lng,

FuelBoardWidgets/FuelBoardLiveActivityView.swift

@@ -70,7 +70,9 @@ private struct FuelBoardLiveActivityView: View {
 
                 // RIGHT — price
                 VStack(alignment: .trailing, spacing: 2) {
-                    FuelStore.priceTextAttributed(context.state.pricePence, size: 22, weight: .bold)
+                    FuelStore.priceTextAttributed(context.state.pricePence,
+                                                   style: context.state.priceDisplayStyle,
+                                                   size: 22, weight: .bold)
                     Text("Tap for directions")
                         .font(.caption2)
                         .foregroundStyle(.secondary)
@@ -86,7 +88,9 @@ private struct FuelBoardLiveActivityPriceView: View {
     let context: ActivityViewContext<FuelBoardLiveActivityAttributes>
 
     var body: some View {
-        FuelStore.priceTextAttributed(context.state.pricePence, size: 17, weight: .bold)
+        FuelStore.priceTextAttributed(context.state.pricePence,
+                                      style: context.state.priceDisplayStyle,
+                                      size: 17, weight: .bold)
     }
 }
 
@@ -126,9 +130,10 @@ extension FuelBoardLiveActivityAttributes.ContentState {
     }
 
     /// Price string from pence, in the user's chosen display style
-    /// (station sign "129.9" or pounds "£1.29⁹/L").
+    /// (station sign "129.9" or pounds "£1.29⁹/L"). Uses the style captured
+    /// in the state at push time.
     var priceText: String {
-        FuelStore.priceText(pricePence)
+        FuelStore.priceText(pricePence, style: priceDisplayStyle)
     }
 
     /// Apple Maps directions URL to the pinned station.

Shared/FuelBoardLiveActivity.swift

@@ -25,6 +25,10 @@ struct FuelBoardLiveActivityAttributes: ActivityAttributes {
         var brand: String
         /// Price in pence per litre (same unit as `FuelStation.prices`).
         var pricePence: Double
+        /// Display style at push time (station sign vs pounds & pence) — carried
+        /// in the state so the extension renders deterministically instead of
+        /// re-reading storage that may not be shared on sideloads.
+        var priceDisplayStyle: PriceDisplayStyle
         var distanceKM: Double
         var lat: Double
         var lng: Double