fix texture reuse on run cycle restart + expose debug kill

- Remove existing tilemap/minimap textures before recreating (prevents
  "Texture key already in use" error on second run)
- Expose __game and __debugKill for dev console testing

Co-authored-by: Cursor <cursoragent@cursor.com>

src/scenes/GameScene.ts

@@ -247,10 +247,15 @@ export class GameScene extends Phaser.Scene {
     // 11. Launch UIScene overlay
     this.scene.launch('UIScene');
 
-    // Transition from Awakening to Exploration after a moment
+      // Transition from Awakening to Exploration after a moment
     this.time.delayedCall(500, () => {
       advancePhase(this.runState); // Awakening → Exploration
     });
+
+    // Debug: expose kill method for testing death cycle
+    (this as unknown as Record<string, unknown>).__debugKill = () => {
+      Health.current[this.playerEid] = 0;
+    };
   }
 
   /** Give the player their school's starting elements */