Add a public marketing landing at "/" celebrating the Top-3 finish at the
AI Engineer World's Fair 2026 hackathon (2nd overall of 95+ teams, LiveKit
track + DigitalOcean Best Use), with a scroll-to-read hero, feature/tech
sections, and the demo embed.
Introduce react-router: "/" serves the public landing (no auth) and "/app"
mounts the existing Clerk-gated app. The app route degrades gracefully to a
"deploying" placeholder when no Clerk publishable key is configured, so the
site renders without secrets.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Karti Tripathi