Build like a startup. Deploy like an enterprise.

Set up a new Rayfin app for me, end to end.

Rayfin is a backend platform for TypeScript developers on Microsoft Fabric. Before writing any code, read https://rayfin.ai/llms.txt and https://rayfin.ai/docs/reference/agent-rules.md — every page on that site is available as raw Markdown by appending .md to its URL.

Then do the work yourself rather than printing steps for me:
1. Scaffold a project with `npm create @microsoft/rayfin@latest my-app` and install dependencies.
2. Sign in with `npx rayfin login`.
3. Start the development session with `npm run dev` — it runs `rayfin dev`, which provisions or reuses the app's backend in Fabric, applies the data model, and serves the frontend locally. Run it in the background and tell me the local URL to open.
4. When I'm ready to publish, deploy with `npx rayfin up`, confirm it with `npx rayfin up status`, and tell me the hosted URL.

Then explain what the starter app does and where the data model lives.