Vouch request: stmcginnis

[stmcginnis]

What do you want to work on?

I would like to add a callback hook to the authentication flow for operators to be able to provide custom callback handling in the Go SDK code.

Today post-auth just displays a simple web page saying "Login successful - You can close this window." This works fine, but some users may want to display a more graphically interesting page, or have the login confirmation include links to other resources or details.

I think it would be fairly trivial, and minimally invasive, to expose the ability to add a hook so someone that needs to can control that post-auth page. Default would be to stay as it is today, but this hook would give an optional ability to change that page without making larger modifications to the source.

Why this change?

This is a usability/polish functionality improvement so OpenShell users/operators can customize displayed authentication results based on their needs.

Checklist

• I wrote this request myself (not AI-generated)
• I have read CONTRIBUTING.md