feat: unique device id

web/src/App.tsx

@@ -1,7 +1,14 @@
-import type { FC } from "react";
+import { useEffect, useState, type FC } from "react";
+import { getDeviceId } from "./util/deviceId";
 
 const App: FC = () => {
-  return <div>Hello</div>;
+  const [deviceId, setDeviceId] = useState("");
+
+  useEffect(() => {
+    getDeviceId().then((id) => setDeviceId(id));
+  }, []);
+
+  return <div>{deviceId}</div>;
 };
 
 export default App;