docs(kubernetes-mcp-server): sync template standards updates

[mberlofa]

Summary

• sync Kubernetes MCP Server docs to chart defaults, including v0.0.63
• document optional ingressClassName rendering, networkPolicy.enabled baseline DNS/HTTPS egress, configurable networkPolicy.dnsEgressPeers, and additive networkPolicy.extraEgress behavior
• expose Kubernetes MCP Server in the playground registry with curated ingress, NetworkPolicy, DNS egress, and API egress controls

Validation

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

Chart PR: helmforgedev/charts#669
Issue: helmforgedev/charts#633

[coderabbitai]

📝 Walkthrough

Walkthrough

Updates the olivetin playground config, adds kubernetes-mcp-server playground wiring, and revises kubernetes-mcp-server documentation for the new image tag and configuration reference details.

Changes

Playground and Docs Updates

Layer / File(s)	Summary
Olivetin playground config src/data/playground-configs.ts	Adds an empty ingress class option and introduces a NetworkPolicy section with an API Egress Port field for olivetin.
Kubernetes MCP Server playground wiring src/data/playground-configs.ts, src/pages/playground.astro	Adds the kubernetes-mcp-server DNS Egress subsection and registers the chart in the playground sync mapping.
Kubernetes MCP Server documentation src/pages/docs/charts/kubernetes-mcp-server.mdx	Updates the documented image tag and revises the configuration reference for persistence and NetworkPolicy egress behavior.

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

Possibly related PRs

• helmforgedev/site#330: Also extends src/pages/playground.astro by adding a chart slug to the playground config sync registry.

🚥 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 clearly related to the Kubernetes MCP Server docs and playground sync, though it is somewhat broad.
Description check	✅ Passed	It includes a solid summary and validation steps, but it does not follow the template's Quality Gates checklist or explicit Related Issue section.

✨ 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/kubernetes-mcp-server-template-standards-sync

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