Contributors remain responsible for AI-assisted work. Agent credit
belongs in the PR body or an Assisted-By trailer, not Co-Authored-By.
Use the GitHub GraphQL API's Commit.authors list to check co-authors
as GitHub recognizes them, excluding the primary author. Reject known
agent accounts and use name and email heuristics only for co-authors
without a linked account.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
