Purpose

• Replace the tj-actions/changed-files action in broken-links-checker.yml with a built-in git diff step that detects changed Markdown files between the PR base and head SHAs, preserving the any_changed / all_changed_files outputs consumed by the lychee step. This removes a third-party dependency from change detection.
• Pin third-party GitHub Actions to specific release commit SHAs (instead of mutable version tags) for reproducible and immutable workflow runs.

Does this introduce a breaking change?

• Yes
• No

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

• Test the code

What to Check

Verify that the following are valid
Changed files:

• .github/workflows/broken-links-checker.yml
• .github/workflows/build-docker-images.yml
• .github/workflows/ci.yml
• .github/workflows/comment_coverage.yml
• .github/workflows/pr-title-checker.yml

Other Information