Port the allocation and scoring core - #7

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, posit-dev/setup-air@63e80dedb6d275c94a3841e15e5ff8691e1ab237. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/