server {
  listen 80;
  server_name _;

  root /usr/share/nginx/html;
  index index.html;

  # Rabbit photos can be a few MB; the nginx default (1m) would reject them.
  client_max_body_size 10m;

  # API and uploaded files are reverse-proxied to the Node server so the whole
  # app stays same-origin (session cookies, relative fetch URLs all just work).
  # "server" is the service name from docker-compose.yml.
  location /api/ {
    proxy_pass http://server:3001;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  }

  location /uploads/ {
    proxy_pass http://server:3001;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  }

  # The service worker must never be served stale, or clients can get pinned to
  # an old shell that points at a renamed bundle.
  location = /sw.js {
    add_header Cache-Control "no-cache";
  }

  # SPA fallback: unknown paths are client-side routes, so serve index.html.
  location / {
    try_files $uri $uri/ /index.html;
  }
}