fix: cdn.hotelsync.ru nginx config + RoomModal key for state reset

- Add cdn.hotelsync.ru server block to nginx config (serves /var/www/uploads)
- Add cdn.hotelsync.ru to HTTP redirect server_name
- RoomModal: add key={editingRoom?.id ?? 'new'} to force state reinit on room change
- RoomModal: remove categories[0] fallback for categoryId (show 'Без категории' instead)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

nginx/conf.d/hotelsync.conf

@@ -1,7 +1,7 @@
 # ── Редирект HTTP → HTTPS ─────────────────────────────────────────────────
 server {
     listen 80;
-    server_name hotelsync.ru www.hotelsync.ru app.hotelsync.ru api.hotelsync.ru git.hotelsync.ru guest.hotelsync.ru cp.hotelsync.ru;
+    server_name hotelsync.ru www.hotelsync.ru app.hotelsync.ru api.hotelsync.ru git.hotelsync.ru guest.hotelsync.ru cp.hotelsync.ru cdn.hotelsync.ru;
 
     location /.well-known/acme-challenge/ {
         root /var/www/certbot;
@@ -115,6 +115,25 @@ server {
     }
 }
 
+# ── cdn.hotelsync.ru — Static file CDN (uploads) ─────────────────────────
+server {
+    listen 443 ssl;
+    server_name cdn.hotelsync.ru;
+
+    ssl_certificate     /etc/letsencrypt/live/cdn.hotelsync.ru/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/cdn.hotelsync.ru/privkey.pem;
+    ssl_protocols TLSv1.2 TLSv1.3;
+    ssl_ciphers HIGH:!aNULL:!MD5;
+
+    add_header Access-Control-Allow-Origin '*' always;
+    add_header Cache-Control 'public, max-age=31536000, immutable' always;
+
+    location / {
+        root /var/www/uploads;
+        try_files $uri =404;
+    }
+}
+
 # ── git.hotelsync.ru — Gitea ──────────────────────────────────────────────
 server {
     listen 443 ssl;

src/components/rooms/RoomModal.tsx

@@ -70,7 +70,7 @@ export function RoomModal({ open, room, categories = [], onClose, onSave, onDele
     sortOrder:          room?.sortOrder          ?? 99,
     allowHourly:        room?.allowHourly        ?? false,
     hourlyRate:         room?.hourlyRate         ?? 1000,
-    categoryId:         room?.categoryId         ?? (categories.find(c => c.name === room?.type)?.id ?? categories[0]?.id ?? ''),
+    categoryId:         room?.categoryId         ?? (categories.find(c => c.name === room?.type)?.id ?? ''),
     description:        room?.description        ?? '',
     earlyCheckinFee:    room?.earlyCheckinFee    ?? '',
     lateCheckoutFee:    room?.lateCheckoutFee    ?? '',

src/pages/RoomsPage.tsx

@@ -203,8 +203,9 @@ export function RoomsPage() {
         </div>
       )}
 
-      {/* Modal */}
+      {/* Modal — key forces remount so useState reinitializes with the new room */}
       <RoomModal
+        key={editingRoom?.id ?? 'new'}
         open={modalOpen}
         room={editingRoom}
         onClose={() => { setModalOpen(false); setSaveError(null) }}