chore: import upstream snapshot with attribution

apps/webapp/app/routes/admin.back-office._index.tsx

@@ -0,0 +1,24 @@
+import { typedjson } from "remix-typedjson";
+import { LinkButton } from "~/components/primitives/Buttons";
+import { Header2 } from "~/components/primitives/Headers";
+import { Paragraph } from "~/components/primitives/Paragraph";
+import { dashboardLoader } from "~/services/routeBuilders/dashboardBuilder";
+
+export const loader = dashboardLoader({ authorization: { requireSuper: true } }, async () => {
+  return typedjson({});
+});
+
+export default function BackOfficeIndex() {
+  return (
+    <div className="flex flex-col items-start gap-3 py-6">
+      <Header2>Back office</Header2>
+      <Paragraph variant="base" className="max-w-prose">
+        Back-office actions are applied to a single organization. Pick an org from the Organizations
+        tab to open its detail page.
+      </Paragraph>
+      <LinkButton to="/admin/orgs" variant="primary/medium">
+        Pick an organization
+      </LinkButton>
+    </div>
+  );
+}