Commit attribution: optionally supply the model name instead of the generic Codex name

What variant of Codex are you using?

CLI

What feature would you like to see?

The git attribution/Co-authored-by trailer feature only gives Codex as the name of the co-author.

I like to know which model produced the code as there are huge differences between generations and sizes of LLMs - this is something Claude Code does as well. Example:

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

I imagine Codex could either template the model name for use in the custom attribution message like this:

commit_attribution: "{{MODEL}} <email@example.com>"

Or could add another config parameter like commit_attribution_use_model: true/false.

Additional information

_No response_