feat(publication): add poster and CVF links for CVPR findings pages

[shunk031]

Why

Expose the official CVF pages for the two CVPR 2026 Findings publications, keep the TAUE publication page linked to its poster asset, and stabilize the PR link check against the known flaky clustrmaps.com endpoint.

What Changed

• Added content/publication/nagai2026taue/poster.pdf and set url_poster: publication/nagai2026taue/poster.pdf in content/publication/nagai2026taue/index.md.
• Added a CVF link after the existing Preprint link in content/publication/kawada2026sciga/index.md.
• Added a CVF link after the existing Preprint link in content/publication/nagai2026taue/index.md.
• Added clustrmaps.com to .lychee/exclude-temporary.txt so the PR link check does not fail on that unrelated external network issue.

Validation

Check that both publication front matters still parse and expose Preprint, CVF in order.

ruby -e 'require "yaml"; require "date"; ["content/publication/kawada2026sciga/index.md", "content/publication/nagai2026taue/index.md"].each do |path|; text = File.read(path); yaml = text.split(/^---\\s*$\\n/)[1]; data = YAML.safe_load(yaml, permitted_classes: [Date, Time], aliases: true); puts "#{path}: #{data.fetch("links").map { |h| h["name"] }.join(", ")}"; end'

Inspect the temporary Lychee exclusions and confirm clustrmaps.com is listed.

rg -n '^clustrmaps\.com$' .lychee/exclude-temporary.txt

Attempt a full Hugo build from the task worktree. This currently fails because of the pre-existing missing about.biography block in layouts/partials/blocks/about.biography.html, not because of these publication edits.

MISE_DISABLE=1 make build

[shunk031]

Observed after pushing the CVF-link update: the rerun reached a terminal state, but \ failed on an unrelated external URL, , with . The publication changes in this PR built successfully in GitHub Actions, and the new CVF links were not listed among the failing URLs. Run: https://github.com/shunk031/shunk031.github.io/actions/runs/26794288556 Job: https://github.com/shunk031/shunk031.github.io/actions/runs/26794288556/job/78987322832

[shunk031]

Observed after pushing the CVF-link update: the rerun reached a terminal state, but check-broken-links failed on an unrelated external URL, https://clustrmaps.com/, with Network error: Connection failed.

The publication changes in this PR built successfully in GitHub Actions, and the new CVF links were not listed among the failing URLs.

Run: https://github.com/shunk031/shunk031.github.io/actions/runs/26794288556
Job: https://github.com/shunk031/shunk031.github.io/actions/runs/26794288556/job/78987322832