The branch was 505 commits behind while the rest of this stack had merged
main during the conflict-resolution round. No textual conflicts, and the
semantic checks that the drift put at risk were re-measured rather than
assumed: both two-sided ratchet pins still equal reality at main's values
(DIRECT_IMPORTER_PIN 158, UNHIDDEN_SPAWNER_PIN 66, this branch adds no
direct importer and no unhidden spawner), the max-lines ratchet passes
against main's smaller grandfathered set, and the whole computer and
child-process suites and every typecheck project pass on the merged base.