feat: add helm documentation and modernize Chart.yaml

[standardloop]

Goal

This PR aims to improve following

Give an appVersion to Chart.yaml

When installing the chart as it is now, the following is shown with a helm list

helm list
NAME    NAMESPACE       REVISION        UPDATED                                 STATUS          CHART           APP VERSION
sloth   sloth           1               2025-10-26 14:02:39.0679 +0800 CST      deployed        sloth-0.14.0               

The appVersion section is missing

Create a helm README and autogenerate docs

There is currently no README for helm, these are helpful to see what values can be passed and how to install the chart.

This MR autogenerates the README using helm-docs by creating README.md.gotmpl and adding a Makefile command to run helm-docs render it. This is the standard across many helm tools.

Misc Changes

In Chart.yaml change home to be website homepage and add sources to link to the github repo

[standardloop]

Open to feedback on how we want to integrate updating docs into the release process. Please let me know!

[standardloop]

merge conflicts have been fixed

[slok]

Hi @standardloop, thanks for the contribution.

Could you help me understanding this documentation, as it seems to me redundant to checking the values.yml and https://sloth.dev/ (where the docs should be).

[standardloop]

Hi @standardloop, thanks for the contribution.

Could you help me understanding this documentation, as it seems to me redundant to checking the values.yml and https://sloth.dev/ (where the docs should be).

@slok

Are you asking why have a README for the helm chart in the repo instead of on the website here:
https://sloth.dev/introduction/install/#kubernetes ?

I just opened an MR that renders with README on the website:

• feat: add chart section to docs sloth-website#41

---

The README of the helm chart should be the source of truth and all other places should be rendering it.

Doc websites

Here is an example with a different application external-dns:

One finds the documentaion:
https://kubernetes-sigs.github.io/external-dns/v0.19.0/charts/external-dns/

And the chart section is just rendering the same README from the github chart
https://github.com/kubernetes-sigs/external-dns/tree/master/charts/external-dns

Here is there code to do that:
https://github.com/kubernetes-sigs/external-dns/blob/master/mkdocs.yml#L10-L11

The README is also the same as the one on artifact hub is rendering:
https://artifacthub.io/packages/helm/external-dns/external-dns

Current flow

There is no helm chart README so no refernces (artifact hub, docs website) can render it

I typically use Artifact Hub to know what version is up to date and what the values for a chart.
I saw this one on Artifact Hub: https://artifacthub.io/packages/helm/sloth/sloth

Looks like a different account uploads your charts. I used that link before, but there was no documenation on the page, it is blank.

I also noticed on your website there isn't too much documenation on the chart values itself.

[standardloop]

@slok any update on this one?