feat(toolsets): add kiali support

[aljesusg]

Adding kiali toolset to kubernetes-mcp

• Adds Kiali toolset with a mesh status tool.
• Requires kiali-url when Kiali is enabled (via flag or config).
• Safer URL building and proper token forwarding to Kiali.(We use the same token to validate permissions and access, so in the local environment we also check the kubeconfig to ensure that the provided context includes valid authentication.)
• Adds focused tests for Kiali manager, client, and mesh.
• Updates help text to list Kiali as an available toolset.

We'll add others later after this first PR

cc @hhovsepy

[matzew]

It would make sense to provide a little document on this, e.g. in here https://github.com/containers/kubernetes-mcp-server/tree/main/docs ?

For instance, when setting the configuration toml to toolsets = ["kiali"] the MCP server would serve those kiali tools, and require the URL where it is running.

[aljesusg]

Sure! I’ll take care of the docs part — I just wanted to get the code reviewed first.
By the way, there’s an error message when the Kiali toolset is enabled without a defined URL.

[manusa]

Looking really good, thank!
I created a PR to your branch with some changes to align the new toolset with the rest of implementations:

aljesusg#2

[aljesusg]

Reviewed and merged. thanks !

[aljesusg]

I’ll remove the flags related with Kiali next day.
Since I see there’s consensus regarding the configuration, I’ll also add the rest of the tools we have.

Thanks