Refactoring

lib/core/router/app_router.dart

@@ -5,8 +5,11 @@ import 'package:trainhub_flutter/presentation/calendar/calendar_page.dart';
 import 'package:trainhub_flutter/presentation/chat/chat_page.dart';
 import 'package:trainhub_flutter/presentation/home/home_page.dart';
 import 'package:trainhub_flutter/presentation/plan_editor/plan_editor_page.dart';
+import 'package:trainhub_flutter/presentation/settings/knowledge_base_page.dart';
+import 'package:trainhub_flutter/presentation/settings/settings_page.dart';
 import 'package:trainhub_flutter/presentation/shell/shell_page.dart';
 import 'package:trainhub_flutter/presentation/trainings/trainings_page.dart';
+import 'package:trainhub_flutter/presentation/welcome/welcome_screen.dart';
 import 'package:trainhub_flutter/presentation/workout_session/workout_session_page.dart';
 
 part 'app_router.gr.dart';
@@ -15,9 +18,12 @@ part 'app_router.gr.dart';
 class AppRouter extends RootStackRouter {
   @override
   List<AutoRoute> get routes => [
+        // First-launch welcome / model download screen
+        AutoRoute(page: WelcomeRoute.page, initial: true),
+
+        // Main app shell (side-nav + tab router)
         AutoRoute(
           page: ShellRoute.page,
-          initial: true,
           children: [
             AutoRoute(page: HomeRoute.page, initial: true),
             AutoRoute(page: TrainingsRoute.page),
@@ -26,7 +32,11 @@ class AppRouter extends RootStackRouter {
             AutoRoute(page: ChatRoute.page),
           ],
         ),
+
+        // Full-screen standalone pages
         AutoRoute(page: PlanEditorRoute.page),
         AutoRoute(page: WorkoutSessionRoute.page),
+        AutoRoute(page: SettingsRoute.page),
+        AutoRoute(page: KnowledgeBaseRoute.page),
       ];
 }