Your agent decides where an unsettled assumption belongs. While drafting a spec, it surfaces the assumptions it is making and checks each one before filing it. Some cannot be settled at that point — what an existing helper really does, what a generated file actually contains, what a check truly proves. Each of those is now placed by a rule rather than written down as-is. The rule lives in the new-spec skill's assumptions step, under the anchor load-bearing-claim-routing; it has one home, and this entry does not restate it.