copy deck

lib/services/deck_storage.dart

@@ -2,7 +2,6 @@ import 'dart:convert';
 import 'package:flutter/foundation.dart';
 import 'package:practice_engine/practice_engine.dart';
 import 'package:shared_preferences/shared_preferences.dart';
-import '../data/default_deck.dart';
 
 /// Service for managing deck storage and retrieval.
 /// Uses persistent storage via shared_preferences.
@@ -29,19 +28,13 @@ class DeckStorage {
     await _initFuture;
   }
 
-  /// Initialize storage with default deck if empty
+  /// Initialize storage
   Future<void> initialize() async {
     if (_initialized) return;
     await _initSharedPreferences();
     
-    // Load existing decks
-    final deckIds = _prefs!.getStringList(_deckIdsKey) ?? [];
-    
-    // Add default deck if no decks exist
-    if (deckIds.isEmpty) {
-      final defaultDeck = DefaultDeck.deck;
-      await saveDeck(defaultDeck);
-    }
+    // Don't automatically create default deck - let users add it manually
+    // This allows them to choose whether to include mock data
   }
 
   /// Ensure storage is initialized