🚀 Phase L: Code Splitting Complete

📊 Bundle Size Comparison

🔧 What Was Implemented

const THREE = await LazyLoader.loadThreeJS();
// Loads three.js only when needed
// Supports retry, timeout, and error handling

// Loads scripts based on route configuration
// Homepage: lazy loads three.js on interaction
// Chat page: loads chat scripts immediately
// Knowledge base: loads KB scripts only

// Before: <script src="/js/three.min.js"></script>
// After: Loads on user interaction (scroll, click, touch)
// Fallback: Loads after 3 seconds if no interaction

✨ Key Features

• Automatic Deduplication: Each script loads only once
• Retry Logic: Exponential backoff with 2 retries
• Error Handling: Graceful degradation if loading fails
• Performance Optimized: Passive event listeners for smooth scrolling
• User-Friendly: Console logging for debugging
• Fallback Timeout: 3D scene always loads (3s fallback)
• Route-Based: Load only required scripts per page
• Preloading: Prefetch likely next page resources

⚡ Performance Impact

📋 Next Steps

1. Browser Testing: Open DevTools → Network tab to verify three.js loads on interaction
2. Lighthouse Audit: Run audit to measure actual improvements
3. Deployment: Deploy to staging for testing
4. Monitor Metrics: Track real user performance improvements
5. Apply Pattern: Lazy load other heavy libraries (chat.js, voice-module.js)

📁 Files Created/Modified