spiral ribbed vase 3d model

Use the exact cylinder mug dumbbell I already made as the base. Do not change the silhouette, size, or proportions. Only add an exterior ribbed spiral pattern like the reference vases: shallow ribs that flow smoothly around the body. Keep top rim solid/flat, bottom open, and the horizontal inner handle at center exactly as-is. Rib spec: height 2–3 mm, filleted/rounded edges, pitch 15–20 mm per turn, gentle S-curve wave, no deep cuts. Walls must remain thick and strong. Material: soft matte ceramic / satin plastic, warm white or stone gray. Output one upright unit; show the same base with ribs applied. Negative prompt: sharp grooves, deep spiral cuts, thin ribbon walls, shape scaling, new handles, vertical handle.