Widget preview: real small-tile proportions + iOS-default-style wallpaper

- Small widget card sized to actual system-small content (158×158pt + padding)
  instead of filling available width; medium keeps 338×158pt
- Wallpaper now mimics the iOS default (dark navy→black in dark mode,
  soft blue-grey in light) via colorScheme-adaptive gradient
- Added 10-widgets-light.png; re-captured 9-widgets-dark.png with data
- 95/95 tests green; Release IPA rebuilt + re-served

FuelBoard/WidgetMockScreen.swift

@@ -6,15 +6,11 @@ import WidgetKit
 /// code the widget extension renders) at small + medium sizes. Used for App
 /// Store screenshot captures; not reachable from the UI.
 struct WidgetMockScreen: View {
+    @Environment(\.colorScheme) private var colorScheme
+
     var body: some View {
         ZStack {
-            LinearGradient(
+            wallpaper
-                colors: [
-                    Color(red: 0.09, green: 0.10, blue: 0.14),
-                    Color(red: 0.02, green: 0.03, blue: 0.06)
-                ],
-                startPoint: .top, endPoint: .bottom
-            )
                 .ignoresSafeArea()
 
             VStack(alignment: .leading, spacing: 26) {
@@ -27,10 +23,10 @@ struct WidgetMockScreen: View {
                     VStack(alignment: .leading, spacing: 3) {
                         Text("FuelBoard")
                             .font(.title2.bold())
-                            .foregroundStyle(.white)
+                            .foregroundStyle(.primary)
                         Text("Cheapest fuel near you")
                             .font(.subheadline)
-                            .foregroundStyle(.white.opacity(0.65))
+                            .foregroundStyle(.secondary)
                     }
                 }
                 .padding(.top, 8)
@@ -44,15 +40,46 @@ struct WidgetMockScreen: View {
         }
     }
 
+    /// iOS-default-style wallpaper (dark navy → black in dark mode, soft
+    /// blue-grey in light), matching the system default look.
+    private var wallpaper: some View {
+        Group {
+            if colorScheme == .dark {
+                LinearGradient(
+                    colors: [
+                        Color(red: 0.09, green: 0.14, blue: 0.26),
+                        Color(red: 0.05, green: 0.08, blue: 0.15),
+                        Color(red: 0.02, green: 0.03, blue: 0.06)
+                    ],
+                    startPoint: .topLeading, endPoint: .bottomTrailing
+                )
+            } else {
+                LinearGradient(
+                    colors: [
+                        Color(red: 0.72, green: 0.80, blue: 0.94),
+                        Color(red: 0.85, green: 0.90, blue: 0.97),
+                        Color(red: 0.94, green: 0.96, blue: 0.99)
+                    ],
+                    startPoint: .topLeading, endPoint: .bottomTrailing
+                )
+            }
+        }
+    }
+
     private func widgetCard(_ family: WidgetFamily, label: String) -> some View {
-        VStack(alignment: .leading, spacing: 10) {
+        // Real widget proportions: system small content is 158×158pt,
+        // medium 338×158pt (card adds the 14pt padding each side).
+        let contentW: CGFloat = family == .systemSmall ? 158 : 338
+        let cardW: CGFloat = contentW + 28
+        let cardH: CGFloat = contentW + 28
+        return VStack(alignment: .leading, spacing: 10) {
             Text(label.uppercased())
                 .font(.caption.weight(.semibold))
                 .tracking(1)
-                .foregroundStyle(.white.opacity(0.5))
+                .foregroundStyle(.secondary)
             FuelPriceWidgetContent(entry: mockEntry(family: family), family: family, isWidget: false)
                 .padding(14)
-                .frame(maxWidth: .infinity, alignment: .leading)
+                .frame(width: cardW, height: cardH, alignment: .leading)
                 .background(Color(.systemBackground), in: RoundedRectangle(cornerRadius: 24, style: .continuous))
         }
     }

build-pm/ModuleCache.noindex/Session.modulevalidation

@@ -1 +1 @@
-1786807226.939194: Module build session file for module cache at Path(_str: "/Users/apt/workspace/fuelboard/build-pm/ModuleCache.noindex")
+1786807715.783432: Module build session file for module cache at Path(_str: "/Users/apt/workspace/fuelboard/build-pm/ModuleCache.noindex")

build-pm/info.plist

@@ -3,7 +3,7 @@
 <plist version="1.0">
 <dict>
 	<key>LastAccessedDate</key>
-	<date>2026-08-15T15:20:26Z</date>
+	<date>2026-08-15T15:28:33Z</date>
 	<key>WorkspacePath</key>
 	<string>/Users/apt/workspace/fuelboard/FuelBoard.xcodeproj</string>
 </dict>