migrate/api/worker/frontend now reference
git.devils.zone/devil/youtube-studio-flow-{backend,frontend}:\${IMAGE_TAG}
instead of building on the deploy host. Adds scripts/build-and-push.sh
to build+tag (git short SHA + latest) and push both images from a dev
machine, and updates infrastructure/README.md with the pull-based
deploy sequence.
Adds the git-workflow skill (Conventional Commits, auto-commit/push
policy, changelog process), CHANGELOG.md seeded from history, and
scripts/generate-changelog.sh to group commits by type. PRs remain
manual by design.