The article has been written to `/var/www/simpleprog-website/articles/claude-code-session-trailer-git-commits.html`. It covers the core issue from the HN post -- Claude Code's `Claude-Session` trailer bypassing existing attribution opt-outs -- along with verified technical details from the GitHub issues and Anthropic's changelog: the separate code path the trailer uses, the `attribution.sessionUrl` key added in v2.1.183 that was never documented in the settings table, the impact on open source contributors, and the opt-out design pattern that forces developers to reconfigure after every release.