Add robots.txt, sitemap.xml, and structured data (JSON-LD + OG/Twitter)

index.html

@@ -5,6 +5,26 @@
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <title>Inference Cooperative — Private AI, governed together</title>
 <meta name="description" content="A member-governed cooperative providing private AI inference. Encrypted interactions, member governance.">
+<meta name="robots" content="index, follow">
+<link rel="canonical" href="https://inference.coop/">
+<meta property="og:type" content="website">
+<meta property="og:site_name" content="Inference Cooperative">
+<meta property="og:title" content="Inference Cooperative — Private AI, governed together">
+<meta property="og:description" content="A member-governed cooperative providing private AI inference. Encrypted interactions, member governance.">
+<meta property="og:url" content="https://inference.coop/">
+<meta name="twitter:card" content="summary">
+<meta name="twitter:title" content="Inference Cooperative — Private AI, governed together">
+<meta name="twitter:description" content="A member-governed cooperative providing private AI inference. Encrypted interactions, member governance.">
+<script type="application/ld+json">
+{
+  "@context": "https://schema.org",
+  "@type": "Organization",
+  "name": "Inference Cooperative",
+  "url": "https://inference.coop/",
+  "email": "info@inference.coop",
+  "description": "A member-governed cooperative providing private AI inference with encrypted interactions and member governance."
+}
+</script>
 <link rel="icon" type="image/svg+xml" href="favicon.svg">
 <style>
   @font-face {