basic homescreen

src/pages/index.tsx

@@ -0,0 +1,12 @@
+import { Center } from "@chakra-ui/react";
+import AppShell from "~/components/nav/AppShell";
+
+export default function Home() {
+  return (
+    <AppShell title="Experiment not found">
+      <Center h="100vh">
+        <div>Select an experiment from the sidebar to get started!</div>
+      </Center>
+    </AppShell>
+  );
+}