deploy.sh [dev|prod <tag>] handles git pull or tag checkout, reinstalls
deps only if requirements.txt changed, restarts the service, runs a
smoke test, and auto-rolls back on failure. rollback.sh reverts to the
checkpoint written by the last deploy (or to an explicit commit).
health-check.sh is a one-liner for "is the app alive?" checks.
Replaces the placeholder-config rsync-based deploy-to-prod.sh.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
