- Add Hammer library for rate limiting with ETS backend
- Rate limit login (5/min), magic link (3/min), newsletter (10/min), API (60/min)
- Add themed 429 error page using bare shop styling
- Enable HSTS in production with rewrite_on for Fly proxy
- Add security hardening plan to docs
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Wire up the contact form with action/method/name attrs so it works
without JavaScript. Add ContactNotifier, ContactController, and a
noscript info banner in the shop root layout.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
