cron/scheduler.py 6386 -> 3423. Four sibling modules hold the free-function clusters,
re-exported from cron.scheduler so every existing import/monkeypatch target keeps resolving;
origin-resident helpers are reached late-bound via `_sched` (same-object visibility, no
import cycle). Every moved node is AST-identical to the base. Source-inspection test for the
bash resolver repointed to cron/scheduler_script.py.
5a8fbbf16c