- Add in-memory rate limiter (src/lib/rateLimit.ts) to public registration endpoints - Add DB migration #9 with 8 performance indexes on booking/registration tables - Fix N+1 query in getUpcomingReminders() — single IN() query instead of per-title - Add loading="lazy" to all non-hero images (MasterClasses, News, Classes, Team) - Add sizes attribute to Classes images for better responsive loading Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>