feat(ui): reconcile backup UI changes with current routing and interaction features

ui/src/components/BreadcrumbBar.tsx

@@ -1,4 +1,4 @@
-import { Link } from "react-router-dom";
+import { Link } from "@/lib/router";
 import { Menu } from "lucide-react";
 import { useBreadcrumbs } from "../context/BreadcrumbContext";
 import { useSidebar } from "../context/SidebarContext";
@@ -25,6 +25,7 @@ export function BreadcrumbBar() {
       size="icon-sm"
       className="mr-2 shrink-0"
       onClick={toggleSidebar}
+      aria-label="Open sidebar"
     >
       <Menu className="h-5 w-5" />
     </Button>