✨ Add Enhanced Demo Scene with Memory System

NEW FEATURES:
🎮 DemoSceneEnhanced.js - Full featured demo
💎 Locket memory trigger with flashback
🌾 Style 30 wheat with 4 growth stages (10s each)
💬 Gronk dialogue system
✅ Quest system (plant 5 wheat)
🎉 Demo complete screen with stats

ASSETS INTEGRATED:
- Mamin silver locket (memory trigger)
- Tool sprites (hoe, bucket, watering can)
- Wheat stages 1-4 (Style 30 correct!)

To test: Change BootScene to start DemoSceneEnhanced
Game is running in Electron!

index.html

@@ -202,6 +202,7 @@
     <script src="src/scenes/BootScene.js"></script>
     <script src="src/scenes/PreloadScene.js"></script>
     <script src="src/scenes/DemoScene.js"></script> <!-- 🎮 DEMO SCENE -->
+    <script src="src/scenes/DemoSceneEnhanced.js"></script> <!-- ✨ ENHANCED DEMO with Locket! -->
     <script src="src/scenes/TiledTestScene.js"></script> <!-- 🗺️ Tiled Map Test Scene -->
     <script src="src/scenes/PrologueScene.js"></script> <!-- 🎬 Story Prologue -->
     <script src="src/scenes/UIScene.js"></script>