feat: complete Style 32 overhaul & Tiled integration fix

- Enforced 'Style 32 - Dark Chibi Vector' for all ground assets.
- Fixed critical Prologue-to-Game crash (function renaming).
- Implemented Tiled JSON/TMX auto-conversion.
- Updated Asset Manager to visualize 1800+ assets.
- Cleaned up project structure (new assets/grounds folder).
- Auto-Ground logic added to GameScene.js.

src/scenes/UltimatePrologueScene.js

@@ -357,7 +357,7 @@ class UltimatePrologueScene extends Phaser.Scene {
             this.showQuestBrief();
 
             // Fade to game
-            this.time.delayedCall(4000, () => this.fadeToGame());
+            this.time.delayedCall(4000, () => this.exitPrologue());
         });
     }
 
@@ -443,10 +443,10 @@ class UltimatePrologueScene extends Phaser.Scene {
 
     skipToGame() {
         console.log('⏭️ Skipping to game...');
-        this.fadeToGame();
+        this.exitPrologue();
     }
 
-    fadeToGame() {
+    exitPrologue() {
         console.log('🎬 Intro complete! Starting game...');
 
         // Fade out music (if exists)