Refresh featured publications and homepage news

[WPISabaGanji]

Motivation

• Replace the outdated featured publications with three new entries (Chypnosis, Telescope, and Uncertainty Estimation) while retaining Jolt so the page lists four featured papers.
• Add the provided research artwork and metadata to the repository so the publications page can show updated logos, authors, and links.
• Reduce homepage noise by removing all news posts except the WOOT 2026 item to highlight the recent presentation.

Description

• Added docs/publications/chypnosis.md, docs/publications/telescope.md, and docs/publications/uncertainty-estimation.md containing titles, author lists, paper links, and concise abstract-based blurbs.
• Removed four superseded featured publication files and removed older news posts, leaving only news/2026-08-12-woot26-presentation.md in the news/ folder.
• Ensured the supplied artwork files are present under static/img/research (Chypnosis.jpeg, Telescope.png, Uncertainty.png) and referenced them from the new publication pages.
• Ran the site publication-generation step prior to build so generated publication listings reflect the new set of featured papers.

Testing

• Ran npm run build (which runs npm run generate-publications) and the Docusaurus production build completed successfully and generated the build artifacts.
• Ran git diff --check and there were no check errors.
• Verified the repository state with find docs/publications -name '*.md' returning exactly 4 featured publication sources and find news -name '*.md' returning exactly 1 news post, and both checks passed.
• Note: browser-based screenshot capture / visual QA was not available in this environment, so no visual snapshot was produced.

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Codex Task