feat(core): add PLUGIN.md files to testing-tools

[Coly010]

Add PLUGIN.md files to test related plugins

Closes NXA-789

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Review	Updated (UTC)
nx-dev	Ready	Preview	Jan 16, 2026 4:40pm

[netlify]

✅ Deploy Preview for nx-docs ready!

Name	Link
🔨 Latest commit	67cb84e
🔍 Latest deploy log	https://app.netlify.com/projects/nx-docs/deploys/696a689755c06a0008463105
😎 Deploy Preview	https://deploy-preview-34125--nx-docs.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[nx-cloud]

View your CI Pipeline Execution ↗ for commit 67cb84e

Command	Status	Duration	Result
nx affected --targets=lint,test,test-kt,build,e...	✅ Succeeded	12m 26s	View ↗
nx run-many -t check-imports check-lock-files c...	✅ Succeeded	2m 51s	View ↗
nx-cloud record -- nx-cloud conformance:check	✅ Succeeded	11s	View ↗
nx-cloud record -- nx format:check	✅ Succeeded	2s	View ↗
nx-cloud record -- nx sync:check	✅ Succeeded	<1s	View ↗

---

☁️ Nx Cloud last updated this comment at 2026-01-16 18:13:23 UTC

[nx-cloud]

Important

At least one additional CI pipeline execution has run since the conclusion below was written and it may no longer be applicable.

Nx Cloud has identified a possible root cause for your failed CI:

Our analysis indicates this is an environment_state issue. The e2e-vite tests fail during external pnpm registry access when creating test workspaces, and this project wasn't modified by our PR (which only added PLUGIN.md files to cypress, jest, playwright, and vitest packages). The failure pattern suggests waiting for external service recovery rather than code changes.

No code changes were suggested for this issue.

If the issue was transient, you can trigger a rerun:

View detailed reasoning on Nx Cloud ↗

_{🎓 Learn more about Self-Healing CI on nx.dev}

[github-actions]

This pull request has already been merged/closed. If you experience issues related to these changes, please open a new issue referencing this pull request.