Build: NX resource-class eval — linux-browsers-js = medium

[kasperpeulen]

Closes #

What I did

NX Cloud resource-class sweep — branch 6 of 6. Do not merge.

Changes exactly one line: .nx/workflows/agents.yaml → linux-browsers-js.resource-class = docker_linux_amd64/medium (10 credits/min).

Part of measuring the real cost / duration / flake curve across linux-browsers-js resource classes on real ci:normal traffic. Replaces the single linearly-extrapolated "medium+ projected" column in the NX-vs-CircleCI findings canvas with a 6-point data-backed curve. linux-js stays at extra_large+ across all branches. Parent branch kasper/nx-ai (#34282) strips CircleCI + NX_EXPERIMENT so these 6 PRs only exercise NX Cloud.

Sweep matrix:

Branch	linux-browsers-js	credits/min
kasper/nx-rc-xlarge-plus	extra_large+	60
kasper/nx-rc-xlarge	extra_large	40
kasper/nx-rc-large-plus	large+	30
kasper/nx-rc-large	large	20
kasper/nx-rc-medium-plus	medium+	15
kasper/nx-rc-medium	medium	10

Traffic plan: cache-bust every ~10 min per branch until 30 runs/branch or Enterprise trial expiry (2026-04-19). Data → scripts/ci-eval.db → new "Resource class sweep" section in the findings canvas with cost + duration bar charts and a measured recommendation.

Checklist for Contributors

Testing

The changes in this PR are covered in the following automated tests:

• stories
• unit tests
• integration tests
• end-to-end tests

Manual testing

Caution

This section is mandatory for all contributions. If you believe no manual test is necessary, please state so explicitly. Thanks!

No manual test necessary — this PR exists only to exercise CI traffic. Verify by opening the PR's NX Cloud CIPE (GH check nx: normal) and confirming the linux-browsers-js agents are running on docker_linux_amd64/medium (visible in the agent metadata on cloud.nx.app). The sync script scripts/evaluate-ci.ts records credit_multiplier = 10 per CIPE in scripts/ci-eval.db.

Documentation

• Add or update documentation reflecting your changes
• If you are deprecating/removing a feature, make sure to update
  MIGRATION.MD

Checklist for Maintainers

• When this PR is ready for testing, make sure to add ci:normal, ci:merged or ci:daily GH label to it to run a specific set of sandboxes. The particular set of sandboxes can be found in code/lib/cli-storybook/src/sandbox-templates.ts

• Make sure this PR contains one of the labels below:

  Available labels

  • bug: Internal changes that fixes incorrect behavior.
  • maintenance: User-facing maintenance tasks.
  • dependencies: Upgrading (sometimes downgrading) dependencies.
  • build: Internal-facing build tooling & test updates. Will not show up in release changelog.
  • cleanup: Minor cleanup style change. Will not show up in release changelog.
  • documentation: Documentation only changes. Will not show up in release changelog.
  • feature request: Introducing a new feature.
  • BREAKING CHANGE: Changes that break compatibility in some way with current major version.
  • other: Changes that don't fit in the above categories.

🦋 Canary release

This PR does not have a canary release associated. You can request a canary release of this pull request by mentioning the @storybookjs/core team here.

core team members can create a canary release here or locally with gh workflow run --repo storybookjs/storybook publish.yml --field pr=<PR_NUMBER>

[nx-cloud]

View your CI Pipeline Execution ↗ for commit 469e2db

Command	Status	Duration	Result
nx run-many -t compile,check,knip,test,lint,fmt...	✅ Succeeded	10m 8s	View ↗

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☁️ Nx Cloud last updated this comment at 2026-04-17 18:07:58 UTC