Task: Record an ORE import as one run

An ORE import is one run: its trades are in the run's group and its source is recorded in an import detail row.

• The import writes one run, one member per booked trade in the run's group and one import detail row naming the request and source.
• The rollback closes the bookings of that run's members.
• The round trip stays at in-scope lost 0 with every envelope as stated.

(Implementation strategy. Written when work starts; key decisions are distilled into the parent story's * Decisions at close, but the plan itself stays — it is the historical record of what we did.)

Every number this task claims about a tree, with the command that produced it and the commit it was measured at. A number without both is not a measurement, because a clean-up record describes a tree and trunk moves under a branch: a consumer count, a gate's component count and a suite's size all change with no code changing, and the reader of a bare number cannot tell which tree it came from. Where the raw output matters, put it in an evidence/ file beside the task and name that file in the Command column.

Manual QA scenarios (scaffolded via compass add test_scenario) that verify this task. Link new ones here as they're created; the scenario doc itself links back via its "Verifies task" field.