server {
  listen 80;
  server_name _;
  root /usr/share/nginx/html;
  index index.html;

  # Service worker : jamais en cache long
  location = /sw.js {
    add_header Cache-Control "no-cache, no-store, must-revalidate";
  }
  location = /manifest.webmanifest {
    add_header Cache-Control "no-cache";
  }

  # SPA fallback
  location / {
    try_files $uri $uri/ /index.html;
  }

  # Assets immuables (Vite hash dans le nom)
  location /assets/ {
    expires 1y;
    add_header Cache-Control "public, immutable";
  }
}