ci: replace Blacksmith runners with GitHub-hosted runners

[sunnylqm]

Replace Blacksmith-hosted GitHub Actions runners with the GitHub-hosted Ubuntu runner.

• blacksmith-4vcpu-ubuntu-2404 → ubuntu-latest

No workflow logic is changed beyond runner selection.

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: 445ec5e1-b1a6-42cd-a55e-a32594605853

📥 Commits

Reviewing files that changed from the base of the PR and between 3ac05b5 and 181e7a2.

📒 Files selected for processing (2)

• .github/workflows/ci-failure-email.yml
• .github/workflows/test.yml

Included review availability: This review used your included allowance. Your plan provides up to 1 included review per hour; 0 remain after this review.

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📝 Walkthrough

Walkthrough

The failure-email and test workflows replace blacksmith-4vcpu-ubuntu-2404 with ubuntu-24.04 for their jobs. The failure-email workflow's triggers and issue-handling steps remain unchanged.

Changes

CI runner update

Layer / File(s)	Summary
Update workflow runners .github/workflows/ci-failure-email.yml, .github/workflows/test.yml	The notify and close jobs, plus the lint, test, node18-smoke, publish-dry-run, and hermes-integration jobs, now use ubuntu-24.04.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~4 minutes

Change: Other

Merge Risk: ⚪ Minimal · up to 181e7

The CI jobs move to GitHub-hosted Ubuntu 24.04 without other workflow changes. No material merge risk is established; normal CI checks should still run.

Architecture Summary

Architecture risk: 🔵 Low · up to 181e7

The changed surface does not map to a changed system, dependency edge, entrypoint, or external dependency.

Changed systems: None identified.

Architecture concerns
No architecture-level concerns identified.

Review details

Before / after behavior

• observed — Modified behavior in .github/workflows/ci-failure-email.yml: The notify job runner changes from blacksmith-4vcpu-ubuntu-2404 to ubuntu-24.04.
• observed — Modified behavior in .github/workflows/ci-failure-email.yml: The close job runner changes from blacksmith-4vcpu-ubuntu-2404 to ubuntu-24.04.
• observed — Modified behavior in .github/workflows/test.yml: The lint job runner changes from blacksmith-4vcpu-ubuntu-2404 to ubuntu-24.04.
• observed — Modified behavior in .github/workflows/test.yml: The test job runner changes from blacksmith-4vcpu-ubuntu-2404 to ubuntu-24.04.

🚥 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.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: replacing Blacksmith runners with GitHub-hosted runners.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Commit to this branch
• Create a new PR

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