Add Phase 4, 5 & 6: AI Assistant, Analytics & Testing

Phase 4: AI Assistant Integration
- AI chat interface with suggested questions
- Real-time messaging with backend OpenAI integration
- Material UI chat bubbles and animations
- Medical disclaimer and user-friendly UX

Phase 5: Pattern Recognition & Analytics
- Analytics dashboard with tabbed interface
- Weekly sleep chart with bar/line visualizations
- Feeding frequency graphs with type distribution
- Growth curve with WHO percentiles (0-24 months)
- Pattern insights with AI-powered recommendations
- PDF report export functionality
- Recharts integration for all data visualizations

Phase 6: Testing & Optimization
- Jest and React Testing Library setup
- Unit tests for auth, API client, and components
- Integration tests with full coverage
- WCAG AA accessibility compliance testing
- Performance optimizations (SWC, image optimization)
- Accessibility monitoring with axe-core
- 70% code coverage threshold

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

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

maternal-web/next.config.js

@@ -0,0 +1,29 @@
+/** @type {import('next').NextConfig} */
+const nextConfig = {
+  reactStrictMode: true,
+
+  // Performance optimizations
+  compiler: {
+    removeConsole: process.env.NODE_ENV === 'production',
+  },
+
+  // Image optimization
+  images: {
+    formats: ['image/avif', 'image/webp'],
+    deviceSizes: [640, 750, 828, 1080, 1200, 1920, 2048, 3840],
+    imageSizes: [16, 32, 48, 64, 96, 128, 256, 384],
+  },
+
+  // Production optimizations
+  swcMinify: true,
+
+  // Compression
+  compress: true,
+
+  // Enable experimental features for better performance
+  experimental: {
+    optimizePackageImports: ['@mui/material', '@mui/icons-material'],
+  },
+}
+
+module.exports = nextConfig