docs(chiefonboarding): sync template standards

[mberlofa]

Summary

• register chiefonboarding in the site sync playground registry
• keep the playground/site sync gate aligned with the chart validation PR

Validation

• make site-sync-check CHART=chiefonboarding
• npm run lint
• npm run format:check
• npm run build
• make release-check REPO=site
• make attribution-check REPO=site

Chart PR: helmforgedev/charts#651
Issue: helmforgedev/charts#633

Summary by CodeRabbit

• New Features
  • Added an additional chart to the playground, making it available for browsing when its slug is present in the configured chart list, even if it is not marked as stable.

[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 Plus

Run ID: d63ff288-c4a6-48e3-b565-b30668d2b6eb

📥 Commits

Reviewing files that changed from the base of the PR and between bcf4d68 and 3425e73.

📒 Files selected for processing (1)

• src/pages/playground.astro

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

• src/pages/playground.astro

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📝 Walkthrough

Walkthrough

Adds chiefonboarding to siteSyncPlaygroundConfigs in playground.astro, allowing that chart slug to be included in playgroundCharts without requiring stable maturity.

Changes

Playground Chart Config Update

Layer / File(s)	Summary
Add chiefonboarding config entry src/pages/playground.astro	Adds chiefonboarding to siteSyncPlaygroundConfigs, which lets it bypass the maturity === 'stable' filter for playground chart inclusion.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• helmforgedev/site#322: Also updates src/pages/playground.astro by adding a chart slug to the shared playground config mapping.
• helmforgedev/site#330: Also extends siteSyncPlaygroundConfigs in src/pages/playground.astro to include another chart slug.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title matches the chiefonboarding registry sync change, though it is broader than the specific code update.
Description check	✅ Passed	The description covers the summary, validation steps, and issue reference, and only slightly deviates from the template format.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/chiefonboarding-template-standards-sync

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