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

node_modules/astro/dist/actions/runtime/middleware.d.ts

@@ -0,0 +1,9 @@
+import { type SerializedActionResult } from './virtual/shared.js';
+export type ActionPayload = {
+    actionResult: SerializedActionResult;
+    actionName: string;
+};
+export type Locals = {
+    _actionPayload: ActionPayload;
+};
+export declare const onRequest: import("../../@types/astro.js").MiddlewareHandler;