switch to go backend

Frontend/src/main.tsx

@@ -0,0 +1,17 @@
+import { StrictMode } from "react";
+import { createRoot } from "react-dom/client";
+import { applyMode, Mode } from "@cloudscape-design/global-styles";
+
+import App from "./App.tsx";
+
+const darkQuery = window.matchMedia("(prefers-color-scheme: dark)");
+applyMode(darkQuery.matches ? Mode.Dark : Mode.Light);
+darkQuery.addEventListener("change", (e) => {
+  applyMode(e.matches ? Mode.Dark : Mode.Light);
+});
+
+createRoot(document.getElementById("root")!).render(
+  <StrictMode>
+    <App />
+  </StrictMode>,
+);