[rblaine95]

ubuntu-latest moves to Ubuntu 26 from October 19, 2026. Naming the image makes the move happen now, in a commit we can test and revert, and it means a later change to ubuntu-latest can't switch the image under us.

Every ubuntu-24.04 runner moves to ubuntu-26.04, and every ubuntu-24.04-arm runner moves to ubuntu-26.04-arm.

Summary by CodeRabbit

• Chores
  • Updated the environments used for automated checks and container builds from Ubuntu 24.04 to Ubuntu 26.04. The change applies to both workflows; no changes to product functionality are included in this update.

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Advanced

Run ID: cf646d80-2ce9-44d3-8c27-380265be9cc6

📥 Commits

Reviewing files that changed from the base of the PR and between f349f88 and 42890e9.

📒 Files selected for processing (1)

• .github/workflows/ci.yaml

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

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📝 Walkthrough

Walkthrough

The check and docker jobs in the CI workflow now run on ubuntu-26.04 instead of ubuntu-24.04.

Changes

CI runner update

Layer / File(s)	Summary
Update job runners .github/workflows/ci.yaml	The check and docker jobs now use ubuntu-26.04.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~3 minutes

Change: Other

Merge Risk: ⚪ Minimal · up to 42890

No actionable merge-blocking risk is established for the CI runner update; it is ready for normal checks.

Architecture Summary

Architecture risk: 🔵 Low · up to 42890

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.yaml: The check job runner changed from ubuntu-24.04 to ubuntu-26.04.
• observed — Modified behavior in .github/workflows/ci.yaml: The docker job runner changed from ubuntu-24.04 to ubuntu-26.04.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: updating the CI runners to ubuntu-26.04.
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.

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_{A rabbit checks the runners hop,
From twenty-four to twenty-six.
The check job bounds across the field,
The Docker job joins in the mix.
Fresh paws tap the workflow path,
And carrots wait beyond the fix.}

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