Add machine-readable metadata links

Author: XxYouDeaDPunKxX

index.html

@@ -8,6 +8,40 @@
       name="description"
       content="Signal Rail is a text-first governance system for AI-assisted project work."
     >
+    <meta name="theme-color" content="#101317">
+    <meta property="og:title" content="Signal Rail">
+    <meta property="og:description" content="A text-first governance system for AI-assisted project work.">
+    <meta property="og:type" content="website">
+    <meta property="og:image" content="https://xxyoudeadpunkxx.github.io/Signal-Rail/assets/header-machine.png">
+    <meta property="og:url" content="https://xxyoudeadpunkxx.github.io/Signal-Rail/">
+    <link rel="canonical" href="https://xxyoudeadpunkxx.github.io/Signal-Rail/">
+    <link rel="alternate" type="text/plain" href="llms.txt" title="LLM-readable project index">
+    <link rel="alternate" type="application/json" href="raw-manifest.json" title="Raw project manifest">
+    <script type="application/ld+json">
+    {
+      "@context": "https://schema.org",
+      "@type": "SoftwareSourceCode",
+      "name": "Signal Rail",
+      "description": "A text-first governance system for AI-assisted project work.",
+      "url": "https://xxyoudeadpunkxx.github.io/Signal-Rail/",
+      "codeRepository": "https://github.com/XxYouDeaDPunKxX/Signal-Rail",
+      "programmingLanguage": "Plain text",
+      "runtimePlatform": "AI-assisted project work with plain-text files",
+      "author": {
+        "@type": "Person",
+        "name": "XxYouDeaDPunKxX",
+        "url": "https://github.com/XxYouDeaDPunKxX"
+      },
+      "keywords": [
+        "plain text governance",
+        "AI-assisted project work",
+        "document routing",
+        "project continuity",
+        "source authority",
+        "Signal Rail"
+      ]
+    }
+    </script>
     <link rel="icon" href="favicon-32x32.png" sizes="32x32" type="image/png">
     <link rel="icon" href="favicon.svg" type="image/svg+xml">
     <link rel="apple-touch-icon" href="apple-touch-icon.png">