Add comprehensive mobile support with touch controls and responsive design

Implemented full mobile optimization to make the game mobile-ready:

**Core Mobile Support:**
- Updated viewport meta tag to prevent zoom and improve touch responsiveness
- Added mobile web app meta tags for iOS/Android standalone mode
- Enhanced CSS to prevent text selection, pull-to-refresh, and tap highlights
- Configured Phaser scale system with min/max bounds (320x240 to 1920x1080)
- Added fullscreen support for game container

**Touch Controls:**
- Added mobile device detection to HuntingScene
- Automatically default to touch controls on mobile devices
- Hide keyboard control instructions on mobile
- Only hide cursor on desktop (preserve default cursor on mobile)
- Adjusted messaging for mobile ("Tap to shoot" vs "Click to shoot")

**Touch Feedback:**
- Added pointerdown/pointerup handlers to all interactive buttons
- Buttons now scale down when pressed (0.95x) for tactile feedback
- Maintained hover effects for desktop compatibility
- Updated IntroScene "SET SAIL" button with touch feedback
- Updated MapScene location markers and close button
- Updated TransitionScene continue button
- All touch feedback works on both touch and mouse inputs

**Backward Compatibility:**
- All desktop functionality preserved
- Hover effects still work on desktop
- Keyboard controls available on desktop
- Touch and mouse inputs work seamlessly together

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

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

src/main.js

@@ -21,7 +21,19 @@ const config = {
     },
     scale: {
         mode: Phaser.Scale.FIT,
-        autoCenter: Phaser.Scale.CENTER_BOTH
+        autoCenter: Phaser.Scale.CENTER_BOTH,
+        width: 800,
+        height: 600,
+        min: {
+            width: 320,
+            height: 240
+        },
+        max: {
+            width: 1920,
+            height: 1080
+        },
+        fullscreenTarget: 'game-container',
+        expandParent: false
     }
 };