Show source and used version in auto generated content

[tuxmea]

Short description

Example: Show

> **NOTE:** This page was generated from the OpenVox source code based on version 8.26.2 on 2026-04-30 17:27:15 +0200
> **NOTE:** This page was generated from the Openact source code based on version 5.6.0 on 2026-04-30 17:27:15 +0200

instead of

> **NOTE:** This page was generated from the OpenVox source code based on 2026-04-30 17:27:15 +0200

Checklist

I have:

• read the CONTRIBUTING.md document
• read and accepted the Developer Certificate of Origin document and added a Signed-off-by annotation to each of my commits
• tested this code
• included documentation (including possible behaviour changes)
• documented the code
• added or modified regression test(s)
• added or modified unit test(s)

[miharp]

This is mostly Claude's idea but it seems sound: since commit is already threaded through Reference#make_header → Util.make_header as a parameter, util.rb can just use that argument directly instead of the global:

def self.make_header(data, repo, commit)
  generated_at = "...based on version #{commit}..."  # use the param, not $version_commit
end

Then in puppet_references.rb, version_commit can stay a plain local variable, and each reference class reads it via a module accessor (PuppetReferences.version_commit) instead of $version_commit. That clears all 15 rubocop offenses without any disables.

I've tested this locally and it produces the expected output. If it's helpful, I've put a working version on a branch: add_information_on_autogenerate...miharp:openvox-docs:fix/pr131-global-var-refactor

[jay7x]

@miharp I like that solution more than using global variables in Ruby :)

[tuxmea]

This is better than my idea. Please make a PR from your branch.
I am going to close this one.