deploy-health replaces the GitHub-Deployments-based drift check: it compares
the commit stamped on the server by the deploy action with each repo's main.
The deploy action now stamps the checked-out commit rather than GITHUB_SHA so
rollbacks are recorded truthfully.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AqpXh3hQMMaC74pTjFq4it
