New: Sidebar and Mandantenwechsel

src/routes/_sidebar/about.tsx

@@ -0,0 +1,14 @@
+import { createFileRoute } from '@tanstack/react-router'
+import AnsprechpartnerDetail from '@/features/CRM/components/detail'
+
+export const Route = createFileRoute('/_sidebar/about')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return (
+    <div>
+      <AnsprechpartnerDetail id={8} />
+    </div>
+  )
+}