docs(answer): sync template standards

[mberlofa]

Summary

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

Validation

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

Chart PR: helmforgedev/charts#644
Issue: helmforgedev/charts#633

Summary by CodeRabbit

• Bug Fixes
  • Updated playground chart filtering so the “answer” chart is now included in site sync results.
  • Improved the set of charts shown in the playground when syncing site data, helping ensure expected content appears.

[coderabbitai]

📝 Walkthrough

Walkthrough

A single new answer entry was added to siteSyncPlaygroundConfigs in src/pages/playground.astro, extending the set of chart slugs used during site-sync filtering.

Changes

Playground config mapping update

Layer / File(s)	Summary
Add answer key to siteSyncPlaygroundConfigs src/pages/playground.astro	Added an answer entry mapping to src/data/playground-configs.ts in the siteSyncPlaygroundConfigs object.

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

Possibly related PRs

• helmforgedev/site#322: Also updates src/pages/playground.astro to extend siteSyncPlaygroundConfigs with a new chart slug mapping.
• helmforgedev/site#330: Also changes src/pages/playground.astro by registering a new slug in siteSyncPlaygroundConfigs pointing at src/data/playground-configs.ts.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
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.
Title check	✅ Passed	The title is concise and related to the answer site-sync registry update, though it is broader than the code change.
Description check	✅ Passed	The description covers summary and validation, but it does not follow the template’s checkbox-style Quality Gates or Related Issue format exactly.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

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

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