Add LeetTutor link preview

web-demo/index.html

@@ -5,6 +5,23 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover" />
     <meta name="color-scheme" content="light dark" />
     <meta name="description" content="LeetTutor is Tony's browser-hosted JARVIS interview learning workspace." />
+    <meta property="og:site_name" content="Tony Tan · Interactive Projects" />
+    <meta property="og:title" content="LeetTutor · JARVIS interview workspace" />
+    <meta property="og:description" content="Practice LeetCode and system design with a browser IDE, local execution, progress tracking, and a floating JARVIS tutor connected directly to your model." />
+    <meta property="og:type" content="website" />
+    <meta property="og:url" content="https://tonytan.me/leetcode/" />
+    <meta property="og:image" content="https://tonytan.me/leetcode/share-card.jpg" />
+    <meta property="og:image:secure_url" content="https://tonytan.me/leetcode/share-card.jpg" />
+    <meta property="og:image:type" content="image/jpeg" />
+    <meta property="og:image:width" content="1200" />
+    <meta property="og:image:height" content="630" />
+    <meta property="og:image:alt" content="LeetTutor coding workspace with a floating local JARVIS tutor" />
+    <meta name="twitter:card" content="summary_large_image" />
+    <meta name="twitter:title" content="LeetTutor · JARVIS interview workspace" />
+    <meta name="twitter:description" content="A browser-hosted interview workspace that connects directly to your local or cloud model." />
+    <meta name="twitter:image" content="https://tonytan.me/leetcode/share-card.jpg" />
+    <link rel="canonical" href="https://tonytan.me/leetcode/" />
+    <link rel="image_src" href="https://tonytan.me/leetcode/share-card.jpg" />
     <title>LeetTutor — JARVIS Learning System</title>
     <link rel="stylesheet" href="./styles.css" />
     <script type="module" src="./app.js"></script>