The reason we couldn't place it in shared/modelConstants.js is that the
frontend uses Vite which requires import.meta.env for environment variables,
while the backend uses process.env. Therefore, we created separate config files
for the frontend (src/constants/config.ts) and backend (server/constants/config.js).
Right now, when the WebSocketContext component unmounts,
there is still a pending reconnection attempt that tries
to reconnect the WebSocket after 3 seconds.
