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/subclass.d.ts

@@ -0,0 +1,28 @@
+export const emulationGroupMarker: "$E$";
+/**
+Works the same as JavaScript's native `RegExp` constructor in all contexts, but automatically
+adjusts matches and subpattern indices (with flag `d`) to account for injected emulation groups.
+*/
+export class RegExpSubclass extends RegExp {
+    /**
+    @param {string | RegExpSubclass} expression
+    @param {string} [flags]
+    @param {{useEmulationGroups: boolean;}} [options]
+    */
+    constructor(expression: string | RegExpSubclass, flags?: string, options?: {
+        useEmulationGroups: boolean;
+    });
+    /**
+    @private
+    @type {Array<{
+      exclude: boolean;
+      transfer?: number;
+    }> | undefined}
+    */
+    private _captureMap;
+    /**
+    @private
+    @type {Record<number, string> | undefined}
+    */
+    private _namesByIndex;
+}