Create a real public-facing website experience

[willdaly]

Summary

The whiteboard calls out "Get real website" as a priority. The current repo is an MVP flow, but it still needs a more polished public-facing website experience for demo and external sharing.

Scope

• define the primary landing page and navigation experience
• make the app feel like a coherent product rather than a prototype flow
• identify any missing pages needed for a convincing demo

Acceptance criteria

• the app has a clear public-facing entry point
• key user flows are discoverable from the website shell
• the presentation is strong enough for hackathon demo use