Fix scaling and controls for desktop displays

- Remove max scale bounds to support unlimited display sizes (4K, 8K, ultrawide)
- Remove duplicate width/height from scale config to fix desktop scaling
- Fix HuntingScene to default to mouse mode on all platforms (was incorrectly starting in keyboard mode on desktop)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/scenes/HuntingScene.js

@@ -22,8 +22,8 @@ export default class HuntingScene extends Phaser.Scene {
         // Detect mobile device
         this.isMobile = /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent);
 
-        // Default to touch on mobile, keyboard on desktop
-        this.useKeyboard = !this.isMobile;
+        // Default to mouse/touch mode on all platforms
+        this.useKeyboard = false;
 
         // Ocean background
         this.add.rectangle(400, 300, 800, 600, 0x1e5a8e);