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/virtual/get-action.d.ts

@@ -0,0 +1,8 @@
+import type { ZodType } from 'zod';
+import type { ActionAccept, ActionClient } from './server.js';
+/**
+ * Get server-side action based on the route path.
+ * Imports from the virtual module `astro:internal-actions`, which maps to
+ * the user's `src/actions/index.ts` file at build-time.
+ */
+export declare function getAction(path: string): Promise<ActionClient<unknown, ActionAccept, ZodType>>;