Helm integration

[bussyjd]

This PR introduces the first stage of Helm integration into the MCP server, following the project’s architectural guidelines of using the Helm Go SDK (not the Helm CLI) for native Kubernetes and Helm operations.

Key Features:

• Adds a new pkg/helm package that abstracts Helm operations using the Helm Go SDK.
• Implements listing of Helm releases across namespaces.
• Exposes new MCP server methods for:
  • Listing all Helm releases (helmReleasesList)
  • Listing Helm releases in a specific namespace (helmListInNamespace)
• Filters out chart templates and files from the returned release data for clarity and performance.
• Updates API and internal logic to support this integration.

Motivation

• This is the foundation for Helm support in MCP, enabling multi-namespace release visibility and setting the stage for future enhancements such as repository management, install/uninstall, and chart discovery.

How to Test
npx @modelcontextprotocol/inspector@latest $(pwd)/kubernetes-mcp-server

Roadmap / Next Steps

Future PRs will add:

• Helm repo add/remove/update
• Helm install (with dry-run support)
• Helm uninstall
• Helm search hub (chart discovery)

Related Issue
Closes #55

[manusa]

Thanks for contributing, I'll review it ASAP

[manusa]

Thanks for contributing and updating the PR. 🚀
I'll add a further commit to add some minor cosmetic changes and merge when ready.

[manusa]

LGTM, thx!