Goal

• Turn current changes into clean commit(s) with clear messages and minimal scope.

Inputs (ask only if missing)

• Commit intent/topic (one sentence).
• Whether to split into multiple commits (if unclear).
• Required checks (if the user is specific).

Non-goals / Guardrails

• Do not rewrite history (no amend/rebase/force-push) unless explicitly requested.
• Do not touch unrelated files.
• Do not discard local changes unless explicitly requested.

Steps

1. Inspect state

• git status --porcelain
• git diff --stat
• If no changes: report and stop.

2. Ensure a feature branch

• git branch --show-current
• If on default branch, create: git switch -c codex/<topic>-<YYYYMMDD>.

3. Decide commit granularity (default: 1)

• Split only when there is a clear separation (refactor/feature/tests/docs).
• Explain the split briefly before staging.

4. Stage and commit

• Stage only relevant paths (use git add -p if partial staging is needed).
• Compose Conventional Commit message: type(scope): summary.
• Commit with git commit -m "<subject>" -m "<optional body>".

5. Verify and report

• git log -1 --oneline
• git status --porcelain
• If checks are required by the repo, run the smallest relevant set:
  • Prefer yarn lint for quick validation.
  • If behavior changed, add yarn build (and yarn build:firefox if relevant).

Output format

• Commit(s) created: hash + subject.
• Files included per commit (short list).
• Checks run (or explicitly skipped).
• Remaining dirty files, if any.

Edge cases

• Untracked files: confirm whether to include.
• Mixed concerns in one file: use partial staging if requested.

Trigger examples

• "良い粒度でコミットして"
• "Conventional Commits でコミット作って"
• "この変更をコミットして"