Feature Request: Add Animation Toggle and Performance Optimization

Current tile animations can feel sluggish or laggy, especially on lower-end devices. Overly long or heavy animations for merging and spawning tiles impact gameplay responsiveness. Players should have control over animation speed or disable them entirely for faster play.

🎯 Proposed Solution

• Add an Animations Toggle in the settings menu.
• Allow players to:
  • Disable animations entirely.
  • Choose between “Normal” and “Fast” animation modes.
• Optimize transition logic for smoother tile movement.

✅ Expected Behavior

• Players can toggle animation settings anytime.
• Fast/disabled animations improve responsiveness on all devices.
• Smooth visual transitions even under high-speed play.

🧪 Test Steps

1. Enable “Fast” mode → verify tile movement is quicker.
2. Disable animations → tiles move instantly with no lag.
3. Refresh page → ensure preference persists.