feature/IO-3357-Reynolds-and-Reynolds-DMS-API-Integration -Cleaned up DMS key check (consolidated into a helper function), Clean up DMS post form and make it agnostic, same with customer selector.

client/src/utils/legacySocket.js

@@ -0,0 +1,16 @@
+// client/src/utils/legacySocket.js
+import SocketIO from "socket.io-client";
+import { auth } from "../firebase/firebase.utils";
+
+// Create once, reuse everywhere.
+const legacySocket = SocketIO(import.meta.env.PROD ? import.meta.env.VITE_APP_AXIOS_BASE_API_URL : "", {
+  path: "/ws",
+  withCredentials: true,
+  autoConnect: false,
+  auth: async (callback) => {
+    const token = auth.currentUser && (await auth.currentUser.getIdToken());
+    callback({ token });
+  }
+});
+
+export default legacySocket;