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/package.json

@@ -6,7 +6,10 @@
     "dev": "next dev -p 3030",
     "build": "next build",
     "start": "next start",
-    "lint": "next lint"
+    "lint": "next lint",
+    "test": "jest",
+    "test:watch": "jest --watch",
+    "test:coverage": "jest --coverage"
   },
   "dependencies": {
     "@emotion/react": "^11.14.0",
@@ -26,14 +29,23 @@
     "react-dom": "^18",
     "react-hook-form": "^7.63.0",
     "react-redux": "^9.2.0",
+    "recharts": "^3.2.1",
     "redux-persist": "^6.0.0",
     "socket.io-client": "^4.8.1",
     "zod": "^3.25.76"
   },
   "devDependencies": {
+    "@axe-core/react": "^4.10.2",
+    "@testing-library/jest-dom": "^6.9.0",
+    "@testing-library/react": "^16.3.0",
+    "@testing-library/user-event": "^14.6.1",
+    "@types/jest": "^30.0.0",
     "@types/node": "^20",
     "@types/react": "^18",
     "@types/react-dom": "^18",
+    "jest": "^30.2.0",
+    "jest-axe": "^10.0.0",
+    "jest-environment-jsdom": "^30.2.0",
     "postcss": "^8",
     "tailwindcss": "^3.4.1",
     "typescript": "^5"