feat: mobile UX, admin polish, rate limiting, and media assets

- Mobile responsiveness improvements across admin and public sections
- Admin: bookings modal, open-day page, team page, layout polish
- Added rate limiting, CSRF hardening, auth-edge improvements
- Scroll reveal, floating contact, back-to-top, Yandex map fixes
- Schedule filters refactor, team profile/info component updates
- New useTrainerPhotos hook
- Added class, team, master-class, and news images

src/app/styles/animations.css

@@ -348,6 +348,14 @@
   background: linear-gradient(90deg, transparent, rgba(201, 169, 110, 0.15), transparent);
 }
 
+/* ===== No-JS Fallback ===== */
+/* When JS is disabled, ensure Reveal content is visible */
+noscript ~ * [style*="opacity: 0"],
+.no-js [style*="opacity: 0"] {
+  opacity: 1 !important;
+  transform: none !important;
+}
+
 /* ===== Reduced Motion ===== */
 
 @media (prefers-reduced-motion: reduce) {