Refactor routing in App component to enhance navigation and improve error handling by integrating dynamic routes and updating the NotFound route.

node_modules/@astrojs/markdown-remark/dist/import-plugin-browser.js

@@ -0,0 +1,7 @@
+async function importPlugin(p) {
+  const importResult = await import(p);
+  return importResult.default;
+}
+export {
+  importPlugin
+};