aicm

name: aicm description: Generate a one-line English commit message from currently staged changes and commit. Replaces the `git aicm` shell alias (which used metered `claude -p`) by running inside Claude Code instead. Use when the user invokes /aicm, or asks to "stage からコミット", "コミットメッセージを生成してコミット", "generate a commit message and commit", or similar after staging changes with `git add`.

Generate a one-line commit message from the staged diff and commit, without using metered API calls.

Get the staged diff:
```
git diff --cached
```
If the diff is empty, tell the user nothing is staged (git add first) and stop. Do NOT stage files automatically.
Generate exactly one line as the commit message:
- English, imperative mood (e.g. "Add", "Fix", "Refactor", not "Added"/"Adds")
- Summarize what changed and why in a single summary line
- No body, no explanation, no trailing period, no markdown, no quotes
- Keep it concise (~72 chars target)
Show the generated message to the user, then commit:
```
git commit -m "<message>"
```
- Invoking this skill is the user's approval to commit; commit directly without an extra confirmation prompt.
- Do NOT pass -e (it opens an interactive editor that does not work in this harness).
- Do NOT add a Co-authored-by trailer. The author is the repo's configured git user.

The commit author/committer is whatever git config user.name / user.email resolves to — the user, not Claude.
This skill only commits already-staged changes. It never runs git add, git push, or any other write operation.