- Add will-change to .hero-glow-orb (filter, transform) and .team-card-glitter::before (background-position) - Clear CSRF cookie on logout alongside auth cookie - Add max array length (100) validation on team reorder endpoint - Remove redundant isOpenDayClassBookedByPhone pre-check (DB UNIQUE constraint handles it) - Extract Schedule grid layout calculation into useMemo - Reduce HeroLogo sparkle animations on mobile (15 → 8 via hidden sm:block) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>