feat: add SCUT Senior documentation and debugging scripts - #62

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

Unexpected input(s) 'npm-version', valid inputs are ['always-auth', 'node-version', 'node-version-file', 'architecture', 'check-latest', 'registry-url', 'scope', 'token', 'cache', 'cache-dependency-path', 'mirror', 'mirror-token']