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

node_modules/regex/dist/cjs/flag-x.d.ts

@@ -0,0 +1,10 @@
+/**
+Remove `(?:)` token separators (most likely added by flag x) in cases where it's safe to do so.
+@param {string} expression
+@returns {string}
+*/
+export function clean(expression: string): string;
+export function flagXPreprocessor(value: import("./utils.js").InterpolatedValue, runningContext: import("./utils.js").RunningContext, options: Required<import("./utils.js").RegexTagOptions>): {
+    transformed: string;
+    runningContext: import("./utils.js").RunningContext;
+};