Concerns: pushword/flat
On the model of static/, the default excludes now keep public/assets/ (yarn build), public/bundles/ (Symfony assets install) and public/media/ (pw:image:cache) out of both directions — the remote chain rebuilds them. A site that does not rebuild one server-side opts back in by overriding PUSH_EXCLUDES without it: the exception lives in the conf, not the rule.