Fix beacon scanning reliability with warmup delay

- Add flutterBeacon.close before initializing to clear stale state
- Add 2-second Bluetooth warmup delay for radio initialization
- Extend scan duration to 5 seconds for reliable detection
- Ensure ACCESS_BACKGROUND_LOCATION permission is included

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

android/app/src/main/AndroidManifest.xml

@@ -18,9 +18,8 @@
     <!-- Allow basic foreground service (needed by beacon library for scanning) -->
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
 
-    <!-- Remove location-specific foreground service and background location (these require video documentation) -->
-    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_LOCATION" tools:node="remove" />
-    <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" tools:node="remove" />
+    <!-- Background location required for beacon scanning -->
+    <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />
 
     <application
         android:label="Payfrit"

lib/main.dart

@@ -30,16 +30,12 @@ class PayfritApp extends StatelessWidget {
         ChangeNotifierProvider<AppState>(create: (_) => AppState()),
       ],
       child: Api.isDev
-          ? Banner(
+          ? Directionality(
+              textDirection: TextDirection.ltr,
+              child: Banner(
                 message: "DEV",
                 location: BannerLocation.topEnd,
                 color: Colors.orange,
-              textStyle: const TextStyle(
-                fontSize: 10,
-                fontWeight: FontWeight.bold,
-                color: Colors.white,
-              ),
-              layoutDirection: TextDirection.ltr,
                 child: MaterialApp(
                   scaffoldMessengerKey: rootScaffoldMessengerKey,
                   debugShowCheckedModeBanner: false,
@@ -47,6 +43,7 @@ class PayfritApp extends StatelessWidget {
                   initialRoute: AppRoutes.splash,
                   routes: AppRoutes.routes,
                 ),
+              ),
             )
           : MaterialApp(
               scaffoldMessengerKey: rootScaffoldMessengerKey,

lib/screens/splash_screen.dart

@@ -246,11 +246,18 @@ class _SplashScreenState extends State<SplashScreen> with TickerProviderStateMix
 
     // Initialize beacon scanning
     try {
+      // Close any existing ranging streams first
+      await flutterBeacon.close;
+
       await flutterBeacon.initializeScanning;
 
-      // Only add delay if permissions were freshly granted (Bluetooth subsystem needs warmup)
+      // Always add warmup delay - Bluetooth adapter needs time to initialize
+      print('[Splash] 🔄 Bluetooth warmup...');
+      await Future.delayed(const Duration(milliseconds: 2000));
+
+      // Extra delay if permissions were freshly granted
       if (_permissionsWereFreshlyGranted) {
-        print('[Splash] 🔄 Fresh permissions - adding Bluetooth warmup delay');
+        print('[Splash] 🆕 Fresh permissions - adding extra warmup');
         await Future.delayed(const Duration(milliseconds: 1500));
       }
 
@@ -274,7 +281,8 @@ class _SplashScreenState extends State<SplashScreen> with TickerProviderStateMix
         }
       });
 
-      await Future.delayed(const Duration(milliseconds: 2000));
+      // Scan for 5 seconds to ensure we catch beacons
+      await Future.delayed(const Duration(milliseconds: 5000));
       await subscription.cancel();
 
       // Now lookup business info for found beacons