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/components/ui/YandexMap.tsx

@@ -28,21 +28,27 @@ export function YandexMap({ addresses, height = 380 }: YandexMapProps) {
     let cancelled = false;
 
     async function build() {
-      const points: { lat: number; lon: number }[] = [];
-
-      for (const addr of addresses) {
-        try {
+      // Geocode all addresses in parallel
+      const results = await Promise.allSettled(
+        addresses.map(async (addr) => {
           const cleaned = cleanAddress(addr);
           const query = cleaned.toLowerCase().includes("минск") ? cleaned : `Минск ${cleaned}`;
           const res = await fetch(
-            `https://nominatim.openstreetmap.org/search?format=json&q=${encodeURIComponent(query)}&limit=1&countrycodes=by`
+            `https://nominatim.openstreetmap.org/search?format=json&q=${encodeURIComponent(query)}&limit=1&countrycodes=by`,
+            { signal: AbortSignal.timeout(5000) }
           );
           const data = await res.json();
           if (data.length > 0) {
-            points.push({ lat: parseFloat(data[0].lat), lon: parseFloat(data[0].lon) });
+            return { lat: parseFloat(data[0].lat), lon: parseFloat(data[0].lon) };
           }
-        } catch { /* skip */ }
-      }
+          return null;
+        })
+      );
+
+      const points = results
+        .filter((r): r is PromiseFulfilledResult<{ lat: number; lon: number } | null> => r.status === "fulfilled")
+        .map((r) => r.value)
+        .filter((p): p is { lat: number; lon: number } => p !== null);
 
       if (cancelled || points.length === 0) return;