Web frontend

web/src/main.tsx

@@ -0,0 +1,23 @@
+import { StrictMode } from "react";
+import { createRoot } from "react-dom/client";
+
+import { App } from "./App";
+import "./styles/app.css";
+
+createRoot(document.getElementById("root")!).render(
+  <StrictMode>
+    <App />
+  </StrictMode>,
+);
+
+// Registered after load so it never competes with the first paint. It is what makes
+// iOS offer "Zum Home-Bildschirm" as an app rather than a bookmark; see public/sw.js
+// for what it does and deliberately does not cache.
+if ("serviceWorker" in navigator && import.meta.env.PROD) {
+  window.addEventListener("load", () => {
+    void navigator.serviceWorker.register("/sw.js").catch(() => {
+      // A plain http:// origin that is not localhost cannot register one. The app
+      // works exactly the same, it just cannot be installed.
+    });
+  });
+}