docs(metrics-server): sync template standards updates

[mberlofa]

Summary

• Document networkPolicy.extraEgress for Metrics Server.
• Add Metrics Server playground NetworkPolicy controls, including custom egress CIDR and port.
• Register Metrics Server in the playground sync allowlist.

Related

• Syncs with fix(metrics-server): align template standards charts#681.
• Issue: fix: align 81 charts with template standards charts#633.

Validation

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

Summary by CodeRabbit

• New Features

  • Added Network Policy options for the metrics-server playground configuration, including controls for egress rules, DNS and kubelet egress, CIDR-based access, and TCP port settings.
  • Enabled metrics-server to appear in the playground’s site-sync chart selection.

• Documentation

  • Updated the metrics-server docs to reflect the latest Network Policy settings and added the new extraEgress value to the configuration reference.

[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: bab3cd21-105f-43af-8541-d133ddc90e87

📥 Commits

Reviewing files that changed from the base of the PR and between 059749b and e23761c.

📒 Files selected for processing (2)

• src/data/playground-configs.ts
• src/pages/docs/charts/metrics-server.mdx

✅ Files skipped from review due to trivial changes (1)

• src/pages/docs/charts/metrics-server.mdx

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

• src/data/playground-configs.ts

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📝 Walkthrough

Walkthrough

Adds a Network Policy field group to the metrics-server playground config, registers the chart for site-sync playground configs, and updates the metrics-server docs example and values table.

Changes

Metrics-server Network Policy support

Layer / File(s)	Summary
Network Policy playground config and wiring src/data/playground-configs.ts, src/pages/playground.astro	Adds a collapsible Network Policy section gated by networkPolicy.enabled, with DNS/kubelet egress toggles and extra egress CIDR/TCP port fields; registers the metrics-server slug in siteSyncPlaygroundConfigs.
Metrics-server docs update for NetworkPolicy src/pages/docs/charts/metrics-server.mdx	Updates the NetworkPolicy example to use allowDNS casing and add extraEgress: [], plus a new networkPolicy.extraEgress row in the Values table.

Estimated code review effort: 2 (Simple) | ~10 minutes

Possibly related PRs

• helmforgedev/site#322: Also extends src/pages/playground.astro’s site-sync chart mapping to include a new chart slug.
• helmforgedev/site#330: Also updates src/pages/playground.astro to register an additional chart slug for playground site-sync filtering.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title is related to the docs and playground sync changes, though it is broader than the main egress-path update.
Description check	✅ Passed	The description covers the summary, validation steps, and related issue, but it does not follow the template's exact section formatting.
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 docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

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

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_{Comment @coderabbitai help to get the list of available commands.}

[mberlofa]

Synced the Metrics Server chart value-path change from helmforgedev/charts#681:

• Updated docs from networkPolicy.extraEgress to networkPolicy.egress.extraEgress.
• Updated the playground config keys for the extra egress CIDR and port fields.

Validation completed:

• make site-sync-check CHART=metrics-server passed on this branch.
• npm run format:check passed.
• npm run lint passed.
• npm run build passed.
• make release-check REPO=site passed.
• make attribution-check REPO=site passed.