Match the 3 Nov color ramps and size-based strokes, and replace leftover palette hex with tokens.

Drop Cookies Settings from the footer, link the Home features that already have pages, and give leftover routes their own descriptions.

app/not-found.tsx

@@ -2,16 +2,17 @@ import type { Metadata } from "next";
 import Link from "next/link";
 import messages from "../messages/en/index";
 import { getTranslation } from "../lib/i18n/getTranslation";
-import { NO_INDEX_ROBOTS } from "../lib/siteMetadata";
+import { NO_INDEX_ROBOTS, routeMetadata } from "../lib/siteMetadata";
 import { getGovernanceTemplateCatalogEntry } from "../lib/templates/governanceTemplateCatalog";
 import Icon from "./components/asset/icon";
 import Button from "./components/buttons/Button";
 import HeroDecor from "./components/sections/HeroBanner/HeroDecor";
 
-export const metadata: Metadata = {
+export const metadata: Metadata = routeMetadata("/404", {
   title: messages.metadata.notFound.title,
+  description: messages.metadata.notFound.description,
   robots: NO_INDEX_ROBOTS,
-};
+});
 
 const NOT_FOUND_TEMPLATE_SLUGS = [
   "consensus",