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/env/errors.d.ts

@@ -0,0 +1,7 @@
+import type { ValidationResultErrors } from './validators.js';
+export interface InvalidVariable {
+    key: string;
+    type: string;
+    errors: ValidationResultErrors;
+}
+export declare function invalidVariablesToError(invalid: Array<InvalidVariable>): string[];