feat: split legacy/payment apps via APP_MODE flag

modules/splash/lib/splash.dart

@@ -1 +1,2 @@
+export 'src/domain/initial_route.dart';
 export 'src/splash_builder.dart';

modules/splash/lib/src/presentation/splash_screen.dart

@@ -10,11 +10,17 @@ class SplashScreen extends StatefulWidget {
     super.key,
     required this.navigationContract,
     required this.checkSessionUseCase,
+    required this.routeMap,
   });
 
   final NavigationContract navigationContract;
   final CheckSessionUseCase checkSessionUseCase;
 
+  /// Maps each [InitialRoute] to its destination path. Provided by the
+  /// app layer so the splash module stays agnostic of which app
+  /// (legacy vs payment) is being launched.
+  final Map<InitialRoute, String> routeMap;
+
   @override
   State<SplashScreen> createState() => _SplashScreenState();
 }
@@ -52,11 +58,9 @@ class _SplashScreenState extends State<SplashScreen>
   void _navigateIfReady() {
     if (!_animationDone || _route == null || !mounted) return;
 
-    final destination = switch (_route!) {
-      InitialRoute.onboarding => AppRoutes.legacyOnboarding,
-      InitialRoute.login => AppRoutes.legacyLogin,
-      InitialRoute.home => AppRoutes.controlPanel,
-    };
+    final destination = widget.routeMap[_route!];
+    if (destination == null) return;
+
     widget.navigationContract.goTo(destination);
   }
 

modules/splash/lib/src/splash_builder.dart

@@ -5,10 +5,16 @@ import 'package:navigation/navigation_contract.dart';
 import 'package:sf_infrastructure/sf_infrastructure.dart';
 import 'package:sf_shared/sf_shared.dart';
 import 'package:splash/src/domain/check_session_use_case_impl.dart';
+import 'package:splash/src/domain/initial_route.dart';
 import 'package:splash/src/presentation/splash_screen.dart';
 
 class SplashBuilder {
-  const SplashBuilder();
+  const SplashBuilder({required this.routeMap});
+
+  /// Maps each [InitialRoute] to its destination path. The app layer
+  /// provides this map so the splash module stays agnostic of which
+  /// app (legacy vs payment) is being launched.
+  final Map<InitialRoute, String> routeMap;
 
   Page<void> buildPage(BuildContext context, GoRouterState state) {
     final navigationContract = GetIt.I<NavigationContract>();
@@ -20,6 +26,7 @@ class SplashBuilder {
       child: SplashScreen(
         navigationContract: navigationContract,
         checkSessionUseCase: checkSessionUseCase,
+        routeMap: routeMap,
       ),
     );
   }