After saving: Cloudflare setup for the redirect host

The redirect host (e.g. go.example.com) needs DNS + a Worker route so short links resolve. Do this once per domain in the Cloudflare dashboard.

1. DNS record — In the zone for your domain, add:
   • Type: AAAA (or A)
   • Name: go (or your chosen subdomain)
   • Content: 100:: (AAAA) or 192.0.2.1 (A) — any placeholder; the Worker route intercepts the request
   • Proxy status: Proxied (orange cloud) — required for the Worker route to fire
2. Worker route — Workers & Pages → affiliate-redirect → Settings → Triggers → Routes → Add route:
   • Route: go.<your-domain>/*
   • Zone: your domain
   Or add it declaratively in worker/wrangler.toml under routes = [...] and redeploy.
3. Verify — curl -I https://go.<your-domain>/<slug> should return a 302 to the link's target URL.

Using a different host (e.g. r.example.com)? Set it as Redirect Host above and use that name in steps 1–2.