feat: 원장을 만든 호출이 만들었다고 말한다 — 막지 않고 보이게 (#48 재구성) - #49

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-python@v5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/