feat(seo): add sitemap generator

app/(app)/glossary/[letter]/page.tsx

@@ -5,6 +5,8 @@ import { notFound } from "next/navigation";
 import { getAllGlossaryEntries } from "@/lib/api";
 import { buildOgMeta, extractQuoteFromHl } from "@/lib/og";
 import { GlossaryClient } from "../glossary-client";
+import { JsonLd } from "@/components/seo/json-ld";
+import { articleJsonLd } from "@/lib/jsonld";
 
 // ---------------------------------------------------------------------------
 // Diacritic → base letter mapping
@@ -145,6 +147,13 @@ export default async function GlossaryLetterPage({
 
   return (
     <div className="min-h-screen bg-background">
+      <JsonLd
+        data={articleJsonLd({
+          path: `/glossary/${rawLetter}`,
+          headline: `Glossary — ${activeLetter}`,
+          isPartOf: "Glossary of Sanskrit & Vedic Terms",
+        })}
+      />
       <GlossaryClient
         entries={clientEntries}
         activeLetter={activeLetter}