feat: add a 'not found' page

src/router/index.ts

@@ -285,6 +285,16 @@ const routes: Array<RouteRecordRaw> = [
     name: "user-profile",
     component: () => import("../views/UserProfileView.vue"),
   },
+  // Catch-all route for 404 errors - must be last
+  {
+    path: "/:pathMatch(.*)*",
+    name: "not-found",
+    component: () => import("../views/NotFoundView.vue"),
+    meta: {
+      title: "Page Not Found",
+      requiresAuth: false,
+    },
+  },
 ];
 
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