イシュー完了時に使用。PRマージ・worktree削除・ブランチ安全削除を一括実行
$npx -y skills add apokamo/kaji --skill issue-closeInstalls into the current project.
Run `npx skills use "https://github.com/apokamo/kaji" --skill "apokamo/kaji/issue-close"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/apokamo/kaji" that are relevant to the current task. Run `npx skills add "https://github.com/apokamo/kaji"` and select the relevant skills, then follow their instructions.