step

lib/shared/providers/onboarding_provider.dart

@@ -0,0 +1,8 @@
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import '../../features/dashboard/provider.dart';
+import '../services/onboarding_service.dart';
+
+final onboardingServiceProvider = Provider<OnboardingService>((ref) {
+  final prefs = ref.watch(sharedPreferencesProvider);
+  return OnboardingService(prefs);
+});

lib/shared/services/onboarding_service.dart

@@ -0,0 +1,25 @@
+import 'package:flutter/foundation.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+class OnboardingService {
+  static const _key = 'onboarding_completed';
+  static bool _shownInSession = false;
+
+  final SharedPreferences _prefs;
+
+  OnboardingService(this._prefs);
+
+  bool get shouldShowOnboarding {
+    if (kDebugMode) {
+      return !_shownInSession;
+    }
+    return !(_prefs.getBool(_key) ?? false);
+  }
+
+  Future<void> completeOnboarding() async {
+    _shownInSession = true;
+    if (!kDebugMode) {
+      await _prefs.setBool(_key, true);
+    }
+  }
+}