Update GPN-Star citation to Nature

[gonzalobenegas]

Summary

• replace GPN-Star bioRxiv links with the Nature article
• update the displayed publication year and BibTeX metadata to the final publication
• use the final published title throughout the citation blocks

Testing

• uv run pre-commit run --all-files
• uv run pytest (234 passed, 6 skipped)
• uv run python docs/prepare_notebooks.py
• uv run sphinx-build -n -W --keep-going -b html docs docs/_build/html

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-09T16:07:49.168381Z	f1a4122	PR opened

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