feat: implement a new splash screen with custom branding, assets, and routing for both Android and iOS.

lib/routing/app_router.dart

@@ -20,6 +20,7 @@ import 'package:real_estate_mobile/features/profile/presentation/screens/profile
 import 'package:real_estate_mobile/features/notifications/presentation/screens/notifications_screen.dart';
 import 'package:real_estate_mobile/features/agents/presentation/screens/agent_edit_profile_screen.dart';
 import 'package:real_estate_mobile/features/profile/presentation/screens/payment_success_screen.dart';
+import 'package:real_estate_mobile/features/splash/presentation/screens/splash_screen.dart';
 
 final routerProvider = Provider<GoRouter>((ref) {
   final authRefreshNotifier = _AuthRefreshNotifier();
@@ -37,7 +38,7 @@ final routerProvider = Provider<GoRouter>((ref) {
   const authRoutes = ['/login', '/signup'];
 
   return GoRouter(
-    initialLocation: '/home',
+    initialLocation: '/splash',
     refreshListenable: authRefreshNotifier,
     redirect: (context, state) {
       final authState = ref.read(authProvider);
@@ -50,6 +51,9 @@ final routerProvider = Provider<GoRouter>((ref) {
         (route) => location == route || location.startsWith('$route/'),
       );
 
+      // Never redirect away from splash — it handles its own navigation
+      if (location == '/splash') return null;
+
       // While checking auth status, don't redirect
       if (isLoading) return null;
 
@@ -65,6 +69,12 @@ final routerProvider = Provider<GoRouter>((ref) {
       return null;
     },
     routes: [
+      // Splash screen (full screen, no shell)
+      GoRoute(
+        path: '/splash',
+        builder: (context, state) => const SplashScreen(),
+      ),
+
       // Auth routes (no shell — full screen)
       GoRoute(
         path: '/login',