# Contributing

See the README's [Contributing](README.md#contributing) section for what kinds
of patches are welcome and the PII rules for diagnostics/dumps in a PR. This
file covers how changes get committed.

## Commits

- **One commit per issue or logical change.** Don't bundle unrelated fixes
  into a single commit, even when working through a batch of issues in one
  sitting — each issue gets its own commit (and its own PR, unless there's a
  specific reason to combine them).
- **Author and committer must be the human accountable for the change** —
  never a tool, bot, or AI agent identity — including when the change was
  drafted or applied by an AI coding agent. Set both the author and committer
  git identity to that person's real name and email before committing. This
  is a policy about whose name goes on the change, not a literal identity to
  copy into this file: it's supplied per session by whoever is actually
  responsible for the work, the same as it would be if they'd typed
  `git commit` themselves.
- **No co-author trailers for AI tools or assistants.** Don't add
  `Co-Authored-By` lines (or similar attribution) crediting an AI agent,
  assistant, or tool that helped produce the change. The commit is
  attributed entirely to the accountable human.

## For AI coding agents

See `AGENTS.md`.