feat: enforce frontend quality guardrails

src/app/ui/App.tsx

@@ -1,8 +1,7 @@
 import { MantineProvider } from "@mantine/core";
 import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
 import { BrowserRouter } from "react-router";
-import { AppRoutes } from "@/app/routes";
-import { RouteErrorBoundary } from "@/app/routes/RouteErrorBoundary";
+import { AppRoutes, RouteErrorBoundary } from "@/app/routes";
 import { theme } from "@/app/theme";
 import { AuthProvider } from "@/features/auth";
 

src/app/ui/index.ts

@@ -0,0 +1 @@
+export { AppBreadcrumbs } from "./AppBreadcrumbs";