Give each route its own title and canonical, and add robots.txt plus a sitemap.

The root layout was stamping the homepage title and production root onto every page. Routes now supply a page segment through one em-dash template, canonicals follow the request path, and non-production hosts disallow crawlers.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/layout.tsx

@@ -3,6 +3,7 @@ import type { Metadata, Viewport } from "next";
 import type { ReactNode } from "react";
 import messages from "../messages/en/index";
 import { ASSETS, getAssetPath } from "../lib/assetUtils";
+import { PRODUCTION_SITE_ORIGIN } from "../lib/siteMetadata";
 import "./globals.css";
 
 // `force-dynamic` is now scoped to `(app)/layout.tsx` and `(admin)/layout.tsx`
@@ -54,7 +55,10 @@ export const viewport: Viewport = {
 };
 
 export const metadata: Metadata = {
-  title: homeMeta.title,
+  title: {
+    default: homeMeta.title,
+    template: messages.metadata.titleTemplate,
+  },
   description: homeMeta.description,
   keywords: [...homeMeta.keywords],
   authors: [{ name: "Media Economies Design Lab" }],
@@ -65,7 +69,7 @@ export const metadata: Metadata = {
     address: false,
     telephone: false,
   },
-  metadataBase: new URL("https://communityrule.com"),
+  metadataBase: new URL(PRODUCTION_SITE_ORIGIN),
   icons: {
     icon: [
       { url: getAssetPath(ASSETS.LOGO), type: "image/svg+xml" },
@@ -89,14 +93,11 @@ export const metadata: Metadata = {
       },
     ],
   },
-  alternates: {
-    canonical: "/",
-  },
   openGraph: {
     title: homeMeta.title,
     description: homeMeta.description,
-    url: "https://communityrule.com",
-    siteName: "CommunityRule",
+    url: PRODUCTION_SITE_ORIGIN,
+    siteName: messages.metadata.siteName,
     locale: "en_US",
     type: "website",
   },