Fixed ArgumentError in rate limiter by replacing cond statement with
proper case pattern matching. The cond was incorrectly evaluating
assignment expressions as truthy values instead of checking if headers
were empty lists.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Updated IP geolocation to check CF-Connecting-IP header first
- Added support for X-Real-IP header as additional fallback
- Updated rate limiter to use same header priority for consistency
- Headers checked in order: CF-Connecting-IP > X-Forwarded-For > X-Real-IP > remote_ip
This ensures proper client IP detection when the site is behind Cloudflare.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
