docs(cronicle): sync playground coverage

[mberlofa]

Summary

• add cronicle to the Helm values playground eligibility map required by the chart sync check

Validation

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

Chart PR: helmforgedev/charts#656
Issue: helmforgedev/charts#633

Summary by CodeRabbit

• New Features
  • Added support for the cronicle chart in the playground’s sync/config selection, making it available alongside other eligible chart slugs.

[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: 142b529e-11ef-4ff7-91df-b3402fd067b1

📥 Commits

Reviewing files that changed from the base of the PR and between e68c6fd and 744bf24.

📒 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

A single-line addition to src/pages/playground.astro adds the cronicle chart slug to siteSyncPlaygroundConfigs, linking it to src/data/playground-configs.ts for playground sync/config eligibility.

Changes

Playground Config Mapping

Layer / File(s)	Summary
Add cronicle mapping entry src/pages/playground.astro	Adds cronicle to siteSyncPlaygroundConfigs, mapping it to src/data/playground-configs.ts.

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

Possibly related PRs

• helmforgedev/site#322: Also extends siteSyncPlaygroundConfigs in src/pages/playground.astro with another chart slug.
• helmforgedev/site#330: Also updates the same playground config mapping logic by adding a different slug entry.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly matches the change: adding Cronicle to the playground sync coverage.
Description check	✅ Passed	The description covers the summary, validation steps, and linked chart issue, which is mostly complete for this template.
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/cronicle-template-standards-sync

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