Read the code, package.json, docs/handoff-dev.md and docs/final-acceptance.md. Write README.md with prerequisites, installation, two terminals, commands, actually configured local URL and process shutdown. Explain the data file, absence of email sending and single-process scope.

Create docs/demo-60s.md: show the offer, enter demo@example.com, submit, observe confirmation, show the data file and check duplicates. Label the future-product mockup as a preview.

Add docs/next-version.md for future public access: hosting-appropriate storage, HTTPS, abuse protection, retention and consent rules, protected administrative access, monitoring and tests of the deployed environment. These are work to specify, not features already delivered.

Finish with exact commands for trying the project and the local acceptance decision. Write all copy in English.
