Add language translation system and weather widget with admin controls

src/app/rooms/page.tsx

@@ -99,7 +99,9 @@ export default function RoomsPage() {
   const postComment = async (roomId: number) => {
     if (!draft.trim() || sending) return;
     setSending(true);
-    const photo = getPhoto(roomId, activePhotoByRoom[roomId] || 0);
+    const room = rooms.find(r => r.id === roomId);
+    if (!room) return;
+    const photo = getPhoto(room, activePhotoByRoom[roomId] || 0);
     await fetch(`/api/rooms/${roomId}/comments`, {
       method: 'POST',
       headers: { 'Content-Type': 'application/json' },