ci: Advance the Atlas workflow pin

[ryancinsight]

Advances the pinned Atlas shared-workflow commit to d875348197be12ad593f993a6f1b8a62d3b8b195.

Updated: book-pages.yml

The pin is a SHA like any other action reference, so a repository stays on whatever Atlas commit it last recorded. These were behind, which meant they did not pick up shared-workflow fixes.

🤖 Generated with Claude Code

High-level PR Summary

This PR updates the pinned commit SHA for the Atlas shared workflow in the book-pages GitHub Actions workflow file. The change advances the reference from 578150340157c6da25f4ee2b37d6b4639d787c1a to d875348197be12ad593f993a6f1b8a62d3b8b195, allowing the repository to pick up recent fixes from the shared workflow.

⏱️ Estimated Review Time: 5-15 minutes

💡 Review Order Suggestion

Order	File Path
1	.github/workflows/book-pages.yml

Summary by CodeRabbit

• Chores
  • Updated the automated book-pages workflow to use a newer pinned workflow version.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 09939d3e-bad1-460a-ae63-6d9f2033e2d8

📥 Commits

Reviewing files that changed from the base of the PR and between 546c199 and f72c86d.

📒 Files selected for processing (1)

• .github/workflows/book-pages.yml

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📝 Walkthrough

Walkthrough

The book workflow now references Atlas commit d875348197be12ad593f993a6f1b8a62d3b8b195 instead of the previous pinned commit.

Changes

Atlas workflow update

Layer / File(s)	Summary
Update Atlas workflow pin .github/workflows/book-pages.yml	The book job now uses the new Atlas workflow commit SHA.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• ryancinsight/helios#48: Introduced the Atlas workflow reference in the same workflow file.
• ryancinsight/helios#49: Updated the Atlas workflow reference to a pinned commit SHA.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch ci/advance-atlas-pin

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