fix(angular): keep buildable libraries private

[AI-JamesHenry]

Current Behavior

Angular libraries generated with --buildable receive a source-level package.json without "private": true. Nx Release therefore discovers them as public packages and infers an nx-release-publish target rooted at the source project, which can publish source files even though the library was not generated with --publishable.

Expected Behavior

Buildable-only Angular libraries are generated as private and are excluded from default release and publish discovery. Libraries generated with --publishable remain public and continue publishing their compiled output from dist/{projectRoot}.

Related Issue(s)

Fixes #34004

[netlify]

👷 Deploy request for nx-docs pending review.

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🔨 Latest commit	2c69f06

[netlify]

👷 Deploy request for nx-dev pending review.

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🔨 Latest commit	2c69f06

[nx-cloud]

View your CI Pipeline Execution ↗ for commit 074f65b

Command	Status	Duration	Result
nx affected --targets=lint,test,build,e2e,e2e-c...	✅ Succeeded	12m 17s	View ↗
nx run-many -t check-imports check-lock-files c...	✅ Succeeded	5s	View ↗
nx-cloud record -- pnpm nx-cloud conformance:check	✅ Succeeded	1m 2s	View ↗
nx build workspace-plugin	✅ Succeeded	<1s	View ↗
nx-cloud record -- nx sync:check	✅ Succeeded	19s	View ↗
nx-cloud record -- nx format:check	✅ Succeeded	5s	View ↗

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☁️ Nx Cloud last updated this comment at 2026-08-02 14:46:52 UTC

[nx-cloud]

Nx Cloud has identified a flaky task in your failed CI:

Since the failure was identified as flaky, the solution is to rerun CI. Because this branch comes from a fork, it is not possible for us to push directly, but you can rerun by pushing an empty commit:

git commit --allow-empty -m "chore: trigger rerun"
git push

View detailed reasoning in Nx Cloud ↗

🔔 Heads up, your workspace has pending recommendations ↗ to auto-apply fixes for similar failures.

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