Build: Fix Nx cloud in sandbox generation

[yannbf]

Closes #

What I did

The sandbox generation scripts were missing the Nx Cloud token, this PR adds it.

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!

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>

Summary by CodeRabbit

• Chores
  • Updated internal sandbox generation workflow: improved scheduling format, standardized environment variable handling, added cloud access token support, and clarified Node version setup for more reliable sandbox builds.

[github-actions]

	Fails
🚫	PR is not labeled with one of: ["ci:normal","ci:merged","ci:daily","ci:docs"]

Generated by 🚫 dangerJS against 577a872

[nx-cloud]

View your CI Pipeline Execution ↗ for commit 824d5d7

Command	Status	Duration	Result
nx run-many -t compile -c production --parallel=1	✅ Succeeded	7m 44s	View ↗

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☁️ Nx Cloud last updated this comment at 2026-03-10 16:05:06 UTC

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 5425a2cf-e8a3-4304-b586-6d257c2c5915

📥 Commits

Reviewing files that changed from the base of the PR and between 824d5d7 and 577a872.

📒 Files selected for processing (1)

• .github/workflows/generate-sandboxes.yml

🚧 Files skipped from review as they are similar to previous changes (1)

• .github/workflows/generate-sandboxes.yml

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📝 Walkthrough

Walkthrough

Update to the GitHub Actions workflow .github/workflows/generate-sandboxes.yml that normalizes quoting (cron, env booleans, node-version-file), and adds the NX_CLOUD_ACCESS_TOKEN environment variable.

Changes

Cohort / File(s)	Summary
Sandbox workflow .github/workflows/generate-sandboxes.yml	Changed cron and string quoting from double to single quotes, updated env boolean values to single-quoted 'false'/'true', added NX_CLOUD_ACCESS_TOKEN to env, and standardized node-version-file references to single-quoted '.nvmrc'.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• Release tooling: Use npm Trusted Publishing for canaries #32621 — Edits the same workflow file and modifies similar string/cron quoting and workflow entries.
• Build: Cleanup space in sandbox generation runner #33223 — Modifies .github/workflows/generate-sandboxes.yml; related CI/workflow formatting changes.

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In @.github/workflows/generate-sandboxes.yml:
- Around line 9-11: Revert the temporary branch override that hardcodes
push.branches to "yann/fix-sandbox-generation-script" and restore the original
branch filters and scheduled-run behavior so the workflow targets the intended
branches (e.g., main/next) instead of the temporary branch; update the
push.branches entry and the scheduled cron trigger (the lines referenced around
the cron and the other overrides) and ensure the sandbox publishing jobs (look
for job names like publish_sandbox or publish) use the real branch context (or a
matrix) rather than the hardcoded temp branch so artifact publishing and
scheduled runs use the correct refs once merged.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 681f7ed1-c955-4606-8b35-508c11600496

📥 Commits

Reviewing files that changed from the base of the PR and between 7b9d207 and 824d5d7.

📒 Files selected for processing (1)

• .github/workflows/generate-sandboxes.yml