Add scheduled Lychee link check

[chyunsu3]

Adds a cached Lychee workflow that checks Markdown, HTML, and reStructuredText links every Monday, Wednesday, and Friday. Pull request CI starts failing after 14 days without a successful link check.

Modeled after rapidsai/rmm#2532

Example run: https://github.com/chyunsu3/nvforest/actions/runs/33471974909/job/99743405587

[copy-pr-bot]

Auto-sync is disabled for draft pull requests in this repository. Workflows must be run manually.

Contributors can view more details about this message here.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: 38991552-e067-4938-ba48-ef2b17ad940d

📥 Commits

Reviewing files that changed from the base of the PR and between 4c81752 and 10870e4.

📒 Files selected for processing (1)

• .github/workflows/pr.yaml

Included review availability: Your plan provides up to 12 included reviews per hour; 10 remain after this review.

---

📝 Walkthrough

Summary by CodeRabbit

• Chores

  • Added scheduled and manual automated link checking for Markdown, HTML, and reStructuredText files.
  • Configured link-checking retries, caching, concurrency, timeouts, and exclusions for known non-actionable links.
  • Added validation to ensure link checks have recently passed before nightly CI proceeds.

• Documentation

  • Updated the README contact link to point to CUDA-X for Data Science.

Walkthrough

Adds scheduled and manual Lychee link checks for tracked documentation files. Configures retries, caching, concurrency, exclusions, and recent PR validation. Updates the README Contact link to CUDA-X for Data Science.

Changes

Lychee link checking

Layer / File(s)	Summary
Scheduled Lychee validation .github/workflows/link-checks.yaml, .lychee.toml, .github/workflows/pr.yaml	Adds scheduled and manual checks with restricted permissions, file discovery, Lychee execution, failure handling, cache management, retries, exclusions, and target-branch validation.

README contact link

Layer / File(s)	Summary
Contact destination update README.md	Replaces the RAPIDS community link with the CUDA-X for Data Science link.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: ⚪ Minimal · up to 10870

The PR adds scheduled cached link checking and updates a documentation link; no actionable merge-blocking risk remains, so it is merge-ready after normal checks and review.

Suggested reviewers: bdice, jameslamb, jolorunyomi

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly summarizes the main change: adding a scheduled Lychee link-check workflow.
Description check	✅ Passed	The description accurately explains the cached Lychee workflow schedule and the 14-day pull request CI requirement.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files. (1 skipped: 1 unsupported.)

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

_{Comment @coderabbitai help to get the list of available commands.}