refactor: 退役删除 cognizes / cognizes-ui 双项目——功能已被主栈全面取代，净 -6.1 万行 - #1132

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/dependency-review-action@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/