- Move service.py -> application/service.py (SchedulerService class name
unchanged; build_object_store / build_storage_http_client move along)
- main.py imports schedule.application.service
- Rewrite worker.py's lazy `from schedule.service import build_object_store`
and test_worker.py's mock patch string targets — same class of bug as the
test_janitor patch strings (silent no-op until the old file is deleted)
- Delete flat service.py (orphaned; only docstring refs remain in
orchestrator, cleaned up in stage 6)
- Zero behavior change; schedule/pyproject.toml untouched
Co-Authored-By: Claude <noreply@anthropic.com>