✨ 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!

src/game.js

@@ -68,7 +68,7 @@ const config = {
             debug: false
         }
     },
-    scene: [BootScene, PreloadScene, DemoScene, TiledTestScene, StoryScene, PrologueScene, GameScene, UIScene, TownSquareScene],
+    scene: [BootScene, PreloadScene, DemoScene, DemoSceneEnhanced, TiledTestScene, StoryScene, PrologueScene, GameScene, UIScene, TownSquareScene],
     scale: {
         mode: Phaser.Scale.FIT,
         autoCenter: Phaser.Scale.CENTER_BOTH