feat: align shared app foundations

lib/common/router/app_router.dart

@@ -54,22 +54,43 @@ final routerProvider = Provider<GoRouter>((ref) {
       return null;
     },
     routes: [
-      ShellRoute(
-        builder: (context, state, child) =>
-            TabShell(location: state.matchedLocation, child: child),
-        routes: [
-          GoRoute(
-            path: AppRoutes.assets,
-            builder: (ctx, s) => const AssetsPage(),
+      StatefulShellRoute.indexedStack(
+        builder: (context, state, navigationShell) => TabShell(
+          location: state.matchedLocation,
+          navigationShell: navigationShell,
+        ),
+        branches: [
+          StatefulShellBranch(
+            routes: [
+              GoRoute(
+                path: AppRoutes.assets,
+                builder: (ctx, s) => const AssetsPage(),
+              ),
+            ],
           ),
-          GoRoute(
-            path: AppRoutes.market,
-            builder: (ctx, s) => const MarketPage(),
+          StatefulShellBranch(
+            routes: [
+              GoRoute(
+                path: AppRoutes.market,
+                builder: (ctx, s) => const MarketPage(),
+              ),
+            ],
           ),
-          GoRoute(path: AppRoutes.news, builder: (ctx, s) => const NewsPage()),
-          GoRoute(
-            path: AppRoutes.profile,
-            builder: (ctx, s) => const ProfilePage(),
+          StatefulShellBranch(
+            routes: [
+              GoRoute(
+                path: AppRoutes.news,
+                builder: (ctx, s) => const NewsPage(),
+              ),
+            ],
+          ),
+          StatefulShellBranch(
+            routes: [
+              GoRoute(
+                path: AppRoutes.profile,
+                builder: (ctx, s) => const ProfilePage(),
+              ),
+            ],
           ),
         ],
       ),