feat(seo): add sitemap generator

app/(app)/essays/[slug]/page.tsx

@@ -5,6 +5,8 @@ import Link from "next/link";
 import { notFound } from "next/navigation";
 import { ogForEssay, extractQuoteFromHl, buildOgMeta } from "@/lib/og";
 import { PageHeader } from "@/components/layout/page-header";
+import { JsonLd } from "@/components/seo/json-ld";
+import { articleJsonLd } from "@/lib/jsonld";
 import { Card, CardContent } from "@/components/ui/card";
 import { buttonVariants } from "@/components/ui/button";
 import { ChevronLeft, ChevronRight } from "lucide-react";
@@ -119,6 +121,7 @@ export default async function EssayPage({
 
   return (
     <div className="min-h-screen bg-background">
+      <JsonLd data={articleJsonLd({ path: `/essays/${slug}`, headline: essay.title, description: essay.paragraphs?.[0], isPartOf: "Essays & Talks" })} />
       <PageHeader sticky>
         <Link
           href="/essays"