Add ORCID and prepare PRD submission kit

[romainsimon]

Summary

• add the author ORCID to citation metadata and the REVTeX byline
• update the manuscript with an APS-style substantive AI-use disclosure using logged model identifiers
• add a complete Data Availability Statement linked to the Zenodo DOI
• add a PRD cover letter, portal metadata, author checklist, source archive, frozen PDF, and SHA-256 checksums
• add a fresh automated PRD submission-gate review

Verification

• Tectonic build succeeds: 8 pages
• all 8 rendered pages inspected
• source archive rebuilt successfully from a clean directory
• rebuilt PDF text matches the frozen PDF
• SHA-256 checks pass
• public-package privacy scan finds no private path, credential, token, or secret

Human gate

Nothing has been submitted to APS. Before submission, the author must add an active contact email, read and approve the frozen PDF, verify ORCID in the APS portal, and confirm funding/competing-interest/AI declarations.