knowledge: 2 insights — threading a parameter through an executor hop (scope-scan the path, a worker's exception is stored on the future → empty results exit 0), a restriction flag in a shared config that only some adapters enforce (refuse in non-enforcing adapters, gate on adapter id, pass pi --no-tools unconditionally) (2 new pages, 4 amended, 12 plan-gaps retired as local-layer) - #231