feat: Rediseño dashboard con 4 pestañas estilo McKinsey

- Nueva estructura de tabs: Resumen, Dimensiones, Agentic Readiness, Roadmap
- Componentes de visualización McKinsey:
  - BulletChart: actual vs benchmark con rangos de color
  - WaterfallChart: impacto económico con costes y ahorros
  - OpportunityTreemap: priorización por volumen y readiness
- 5 dimensiones actualizadas (sin satisfaction ni economy)
- Header sticky con navegación animada
- Integración completa con datos existentes

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

nginx/conf.d/beyond.conf

@@ -0,0 +1,43 @@
+server {
+    listen 80;
+    server_name ae-analytics.beyondcx.ai;
+    return 301 https://$host$request_uri;
+    client_max_body_size 1024M;
+}
+
+server {
+    listen 443 ssl;
+    server_name ae-analytics.beyondcx.ai;
+
+    client_max_body_size 1024M;
+
+    ssl_certificate /etc/letsencrypt/live/ae-analytics.beyondcx.ai/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/ae-analytics.beyondcx.ai/privkey.pem;
+    ssl_protocols TLSv1.2 TLSv1.3;
+    ssl_ciphers HIGH:!aNULL:!MD5;
+
+    # FRONTEND (React)
+    location / {
+        proxy_pass http://frontend:4173/;
+        proxy_http_version 1.1;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+    }
+
+    # BACKEND (FastAPI)
+    location /api/ {
+        proxy_pass http://backend:8000/;
+        proxy_http_version 1.1;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+
+        proxy_connect_timeout 60s;
+        proxy_send_timeout    600s;
+        proxy_read_timeout    600s;
+        send_timeout          600s;
+    }
+}