Give public pages crawler-ready HTML and production analytics.

Crawlers were reading one shared shell, so titles, descriptions, links, and markup were missing or the same on every URL. HeyCatch and Google Analytics load only on the production site and the iOS and Android apps.

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

llm-fe/public/404.html

@@ -0,0 +1,48 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="utf-8" />
+  <title>The page is not found — Hesychia</title>
+  <meta name="description" content="The page is not found. This address is not a Hesychia page. Open the home page to read what the product does, what it costs, and how to start an account." />
+  <meta property="og:title" content="The page is not found — Hesychia" />
+  <meta property="og:description" content="The page is not found. This address is not a Hesychia page. Open the home page to read what the product does, what it costs, and how to start an account." />
+  <meta property="og:url" content="https://hesychia.ai/404.html" />
+  <meta property="og:image" content="https://hesychia.ai/og-image.png" />
+  <meta property="og:image:width" content="1200" />
+  <meta property="og:image:height" content="630" />
+  <meta name="twitter:card" content="summary_large_image" />
+  <meta name="twitter:title" content="The page is not found — Hesychia" />
+  <meta name="twitter:description" content="The page is not found. This address is not a Hesychia page. Open the home page to read what the product does, what it costs, and how to start an account." />
+  <meta name="twitter:image" content="https://hesychia.ai/og-image.png" />
+  <script type="application/ld+json">
+{
+  "@context": "https://schema.org",
+  "@graph": [
+    {
+      "@type": "WebPage",
+      "headline": "The page is not found — Hesychia",
+      "url": "https://hesychia.ai/404.html",
+      "mainEntityOfPage": "https://hesychia.ai/404.html"
+    },
+    {
+      "@type": "Organization",
+      "name": "Hesychia",
+      "url": "https://hesychia.ai",
+      "logo": "https://hesychia.ai/apple-touch-icon.png",
+      "parentOrganization": {
+        "@type": "Organization",
+        "name": "AI ML Operations, LLC",
+        "url": "https://www.aimloperations.com"
+      }
+    }
+  ]
+}
+</script>
+</head>
+<body>
+  <h1>Not Found</h1>
+  <p>The page is not found, and this address is not a Hesychia page.</p>
+  <p>Open the home page to read what the product does, what it costs, and how to start an account.</p>
+  <nav aria-label="Related pages"><a href="/">What Hesychia is</a><a href="/pricing/">Hesychia pricing — $10/month, no ads</a><a href="/privacy/">What Hesychia stores and does not sell</a><a href="/changelog/">Dated Hesychia product updates</a></nav>
+</body>
+</html>