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/cli/flags.d.ts

@@ -0,0 +1,10 @@
+import type { Arguments } from 'yargs-parser';
+import type { AstroInlineConfig } from '../@types/astro.js';
+import { Logger } from '../core/logger/core.js';
+export type Flags = Arguments;
+export declare function flagsToAstroInlineConfig(flags: Flags): AstroInlineConfig;
+/**
+ * The `logging` is usually created from an `AstroInlineConfig`, but some flows like `add`
+ * doesn't read the AstroConfig directly, so we create a `logging` object from the CLI flags instead.
+ */
+export declare function createLoggerFromFlags(flags: Flags): Logger;