Complete Next.js migration with SSR and Docker deployment

- Migrate from vanilla JavaScript SPA to Next.js 16 with App Router
- Add server-side rendering for all pages (Home, Compare, Rankings)
- Create individual school pages with dynamic routing (/school/[urn])
- Implement Chart.js and Leaflet map integrations
- Add comprehensive SEO with sitemap, robots.txt, and JSON-LD
- Set up Docker multi-service architecture (PostgreSQL, FastAPI, Next.js)
- Update CI/CD pipeline to build both backend and frontend images
- Fix Dockerfile to include devDependencies for TypeScript compilation
- Add Jest testing configuration
- Implement performance optimizations (code splitting, caching)

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

nextjs-app/docker-compose.yml

@@ -0,0 +1,41 @@
+version: '3.8'
+
+services:
+  nextjs:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: schoolcompare-nextjs
+    ports:
+      - "3000:3000"
+    environment:
+      - NODE_ENV=production
+      - NEXT_PUBLIC_API_URL=${NEXT_PUBLIC_API_URL:-http://backend:8000/api}
+      - FASTAPI_URL=${FASTAPI_URL:-http://backend:8000/api}
+    depends_on:
+      - backend
+    networks:
+      - schoolcompare-network
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "node", "-e", "require('http').get('http://localhost:3000/', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 40s
+
+  backend:
+    image: schoolcompare-backend:latest
+    container_name: schoolcompare-backend
+    ports:
+      - "8000:8000"
+    environment:
+      - DATABASE_URL=${DATABASE_URL}
+      - PYTHONUNBUFFERED=1
+    networks:
+      - schoolcompare-network
+    restart: unless-stopped
+
+networks:
+  schoolcompare-network:
+    driver: bridge