Deploy a public live demo to Cloudflare Pages

[CPAtoCybersecurity]

Why
Right now visitors must install Node, clone, and run npm install before seeing anything. A live demo eliminates the install wall entirely.

What

• Pre-load with the Alma Security demo profile so visitors land in a populated tool.
• Add a prominent "Try the Live Demo" button at the top of the README.
• Set the repo homepage field to the demo URL.

Acceptance criteria

• Live demo URL accessible and loads Alma Security profile by default
• CI builds and deploys automatically on push to main
• Demo URL added to README hero and repo homepage field
• localStorage scoped per-visitor (no cross-contamination)