Use when the ask names the motion of an existing product page but not the exact edit — transitions, easing, timing, reduced-motion ("the motion feels janky", "transitions are too slow"). Propose-only: records up to five ranked findings on the surface's design ticket; dx-design-execute builds accepted ones. A stated edit ("make the transition 150ms") or a brand-new interaction is dx-design-execute's. NOT for a whole-page review with no dimension named — that is dx-design-critique. Visual styling goes to dx-design-polish.