Canvas 1024x1024 RGBA PNG, transparent except hat pixels.

Style: clean cartoon, smooth dark-brown outline matching the base's line weight, flat warm fills, soft cel shading lit from top-left.

Facing: THREE-QUARTER LEFT at eye level, exactly like the base; the hat turns with the head (band ellipse tilted, the front of the hat toward the viewer's left), never a straight-on symmetric cone, never seen from below.

Subject: 12 garden-gnome hats, each a tall pointed cone with a round bobble (pompom or ball) on the tip.

Vary them clearly: classic red felt, forest-green felt, blue wool knit with ribbing, striped knit, patchwork, polka-dot, brown leather with stitching, mustard corduroy, purple velvet-look felt with a star patch, white-and-red candy stripe, mossy green with a leaf sprig, rare gold-trimmed royal gnome hat. Bobble colours contrast with the cone.

Placement: the hat sits DOWN over the cranium, which is centred at x=510 (crown top at x=520, y=102). The lower band runs from about x=350 to x=670 and covers the top of the head; its lowest pixel falls between y=165 and y=205 on the left/front side (it must stay above the eyebrows at y=185 over the brows, around y=170 to 180 there) and may dip to y=225 at the back-right just above the ear top (y=245). Do not cover the eyes (y=255), the nose, or the ear.

The cone rises from the band and, because the canvas top limits height, its tip flops or bends toward the back-right, with the bobble kept fully inside the canvas (roughly x 600-800, y 15-130); nothing crosses y<5. Never show the hat's opening, lining or underside; there is no head visible under the hat; draw nothing that would sit behind the head. No skin colour on any hat.

Outputs: artifacts/hat_01.png .. artifacts/hat_12.png and artifacts/hat.json, an array of {"file","name","weight"} with weights summing to 100; classic red and green are the most common, and the gold royal hat is the rarest (weight 2-3). Write artifacts/hat_01.png .. artifacts/hat_12.png and artifacts/hat.json: an array of {"file","name","weight"} with weights summing to 100, rarer lower.