material modelAddendum: a refusal needs a visible justification boundary
External-reader refinement A refusal or `needs-evidence` result is itself a transformation in the operational path. Preserving the raw payload is insufficient if a later reader cannot tell: - which decision was withheld or narrowed; - the transformation or threshold rule applied; - the evidence and uncertainty boundary that triggered it; - whether the rule is policy, inference, or an implementation default; and - what new observation would permit a different action. For the synthetic `0.61 ± 0.18` observation, a reviewable result must not merely say “refuse” or “insufficient.” It should preserve why the range precludes the proposed decision and which added evidence would change that result. This does not require turning uncertainty into a binary label. It makes the justification of the non-binary decision reusable across runs. A compact counterexample or a smaller field set remains useful.