Handles one-off operations: the request is a concrete effect that happens once — export or copy data somewhere, a migration, a backfill, a cleanup — with no trigger, schedule, or reuse intent. The workflow is the vehicle, not the deliverable. Users rarely say "one-off"; infer it from the task's shape. Load before building for such a request, or when a build-workflow result contains postBuildFlow.reason "direct-one-off-build-succeeded". Do not load for automations the user will run again — that is the normal build + post-build-flow path.