ci: switch to arm64 runners

[wojtekmaj]

🍃 Eco friendly PR
Estimated 4665 kg CO₂e savings per year
Calculations: ci_arm64_co2e_savings_with_speedup.xlsx

Comparing, (before/after; take into consideration missing cache) it seems to shave off:

• ~2 seconds from tsc
• ~2 seconds from unit tests
• ~6 seconds from components tests
• ~2 seconds from browser tests
  leaving the rest pretty much intact.

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[Copilot]

Pull request overview

This PR updates GitHub Actions workflows to run CI jobs on Ubuntu 24.04 ARM runners to improve performance and reduce cost.

Changes:

• Switch runs-on from ubuntu-latest to ubuntu-24.04-arm in the main CI workflow.
• Switch runs-on from ubuntu-latest to ubuntu-24.04-arm in the autofix workflow.
• Switch runs-on from ubuntu-latest to ubuntu-24.04-arm in the Lunaria overview workflow.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
.github/workflows/ci.yml	Moves lint/test/browser/a11y/knip jobs to Ubuntu 24.04 ARM runners.
.github/workflows/autofix.yml	Moves the autofix job to an Ubuntu 24.04 ARM runner.
.github/workflows/lunaria.yml	Moves Lunaria overview generation to an Ubuntu 24.04 ARM runner.

[coderabbitai]

📝 Walkthrough

Walkthrough

This pull request updates three GitHub Actions workflows to change CI runner images. The autofix, CI and lunaria workflows have their runs-on values modified from ubuntu-latest to ubuntu-24.04-arm for the listed jobs; the a11y job in the CI workflow remains on ubuntu-latest. No changes were made to steps, commands or job logic. Total line-level edits are small (each workflow shows one or a few additions and deletions).

🚥 Pre-merge checks | ✅ 1

✅ Passed checks (1 passed)

Check name	Status	Explanation
Description check	✅ Passed	The pull request description is directly related to the changeset, explaining the motivation (environmental savings and performance improvements) and providing concrete measurements of the impact.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

---

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

[coderabbitai]

Actionable comments posted: 1

[wojtekmaj]

Actual difference in CI run time minuscule, a bit wobbly because of caching that didn't settle down just yet. Up to you whether to merge or not.

[serhalp]

There's also these new runners we could try for some of the lightweight workflows? https://github.blog/changelog/2026-01-22-1-vcpu-linux-runner-now-generally-available-in-github-actions/

[wojtekmaj]

There's also these new runners we could try for some of the lightweight workflows? https://github.blog/changelog/2026-01-22-1-vcpu-linux-runner-now-generally-available-in-github-actions/

Interesting, but it seems like a cost saving opportunity, which in our case is not a concern. Or is it?

[github-actions]

Lunaria Status Overview

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Learn more

By default, every PR changing files present in the Lunaria configuration's files property will be considered and trigger status changes accordingly.

You can change this by adding one of the keywords present in the ignoreKeywords property in your Lunaria configuration file in the PR's title (ignoring all files) or by including a tracker directive in the merged commit's description.

Tracked Files

File	Note
lunaria/files/de-DE.json	Localization changed, will be marked as complete. 🔄️
lunaria/files/fr-FR.json	Localization changed, will be marked as complete. 🔄️
lunaria/files/ja-JP.json	Localization changed, will be marked as complete. 🔄️
lunaria/files/pl-PL.json	Localization changed, will be marked as complete. 🔄️

Warnings reference

Icon	Description
🔄️	The source for this localization has been updated since the creation of this pull request, make sure all changes in the source have been applied.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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[danielroe]

as a public repo, we're not paying for actions