feat(landing): beta "coming soon" CTAs + team credits & SEO

The app is in active development, not yet public — replace the "Launch app"
CTAs with a "Private beta — coming soon" state (nav, hero, and final CTA).

Add a "Built by" section crediting the team, each name linking to their
LinkedIn, plus JSON-LD SoftwareApplication + Person author markup, an author
meta tag, and a canonical link for name/entity SEO.

Team: Karti Tripathi, Ramis Hasanli, Yahya Alhinai, Shakthi Bachala.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/index.html

@@ -8,8 +8,10 @@
     <title>PodMan — the teammate that sees what git can’t</title>
     <meta
       name="description"
-      content="PodMan is an ambient AI teammate that watches your pod's screens in realtime and catches merge collisions before anyone pushes."
+      content="PodMan is an ambient AI teammate that watches your pod's screens in realtime and catches merge collisions before anyone pushes. Top 3 at the AI Engineer World's Fair 2026 Hackathon — built by Karti Tripathi, Ramis Hasanli, Yahya Alhinai, and Shakthi Bachala."
     />
+    <meta name="author" content="Karti Tripathi, Ramis Hasanli, Yahya Alhinai, Shakthi Bachala" />
+    <link rel="canonical" href="https://podman.live/" />
 
     <meta property="og:type" content="website" />
     <meta property="og:site_name" content="PodMan" />
@@ -31,6 +33,42 @@
     />
     <meta name="twitter:image" content="https://www.podman.live/og.png" />
 
+    <script type="application/ld+json">
+      {
+        "@context": "https://schema.org",
+        "@type": "SoftwareApplication",
+        "name": "PodMan",
+        "url": "https://podman.live",
+        "applicationCategory": "DeveloperApplication",
+        "operatingSystem": "Web",
+        "description": "An ambient AI teammate that watches your pod's screens in realtime and catches merge collisions, duplicated work, and missed handoffs before anyone pushes.",
+        "award": "Top 3 — AI Engineer World's Fair 2026 Hackathon (2nd overall of 95+ teams, LiveKit track winner, DigitalOcean Best Use)",
+        "author": [
+          {
+            "@type": "Person",
+            "name": "Karti Tripathi",
+            "url": "https://karti.ai",
+            "sameAs": "https://www.linkedin.com/in/kartitripathi/"
+          },
+          {
+            "@type": "Person",
+            "name": "Ramis Hasanli",
+            "sameAs": "https://www.linkedin.com/in/hasanliramis/"
+          },
+          {
+            "@type": "Person",
+            "name": "Yahya Alhinai",
+            "sameAs": "https://www.linkedin.com/in/yhinai/"
+          },
+          {
+            "@type": "Person",
+            "name": "Shakthi Bachala",
+            "sameAs": "https://www.linkedin.com/in/shakthi-bachala-09401510a/"
+          }
+        ]
+      }
+    </script>
+
     <script>
       // Tear down any service worker we shipped earlier (vite-plugin-pwa).
       // PodMan runs no PWA in production: we deploy continuously and SW-driven