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/components/SchoolMap.module.css

@@ -0,0 +1,38 @@
+.mapWrapper {
+  width: 100%;
+  height: 100%;
+  position: relative;
+}
+
+.mapLoading {
+  width: 100%;
+  height: 100%;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  background: var(--bg-secondary);
+  border-radius: var(--radius-md);
+  gap: 1rem;
+}
+
+.spinner {
+  width: 2rem;
+  height: 2rem;
+  border: 3px solid rgba(59, 130, 246, 0.3);
+  border-radius: 50%;
+  border-top-color: var(--primary);
+  animation: spin 0.8s linear infinite;
+}
+
+@keyframes spin {
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+.mapLoading p {
+  color: var(--text-secondary);
+  font-size: 0.9375rem;
+  margin: 0;
+}