init: initial commit

src/app/App.tsx

@@ -0,0 +1,13 @@
+import { QueryClientProvider } from "@tanstack/react-query";
+import { useAppProviders } from "./providers";
+import { AppShell } from "../components/layout/AppShell";
+
+export function App() {
+  const { queryClient } = useAppProviders();
+
+  return (
+    <QueryClientProvider client={queryClient}>
+      <AppShell />
+    </QueryClientProvider>
+  );
+}