Merge pull request #637 from muzimuzhi/ci/bump-setup-texlive-action-4

chore(deps): bump TeX-Live/setup-texlive-action from 3 to 4

version 2025C

update test files

Merge pull request #629 from muzimuzhi/track-latex-2025-11

test: track LaTeX 2025-11-01 changes

fix unexpected new pages caused by \pageshrink (#536)

improve page tracing log (#536)

clean up begin/end pairs, part 1 (#531)

clean up scratch variables, part 2 (#531)

clean up scratch variables, part 1 (#531)

Merge pull request #626 from muzimuzhi/typos

run "sudo apt-get update" before installing poppler

improve page tracing log

correct typos