#667 [security][tools] OS の隔離の中から制御端末へ TIOCSTI で入力を注入でき、/dev/pts の他の端末へ書ける - #674

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, dorny/paths-filter@v3. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/