CHARACTER: Canvas 1024x1024 PNG, transparent background.

Style: the anchor above. Draw one front-facing anatomically correct human skull on a skeletal neck and shoulders: domed cranium, narrowing jaw, aged ivory bone with fine cracks.

Placement: crown at y=150; eye-socket centres on y=420 at about x=430 and x=594; closed mouth with teeth meeting at y=600; chin/jaw bottom at y=690; narrowest point of the cervical vertebrae at y=730; skull 410px wide at the cheekbones (x=307 to 717), centred on x=512, height 540px (about 1.32:1). Below the neck draw bare clavicles and shoulder bones running off the bottom edge, with no gaps at the canvas edge.

Steampunk flavour lives on the bone only: small brass and copper rivets, plates and a seam at the temple or jaw hinge, and faint teal glass glints deep in the sockets. Keep the sockets open and readable. The jaw stays shut in a neutral closed mouth drawn on this layer.

Do not draw a hat, goggles, glasses, collar, scarf, shirt, coat, gear necklace or any garment, and nothing may extend above y=150 or wider than about x=287 to 737 at head height. Name the file character_base.png. Output exactly 1 file.

Weights file: character_weights.json with {"character_base.png":1}.

BACKGROUND: Canvas 1024x1024 PNG, fully opaque, edge to edge.

Style: flat single colours only, with no gradient, texture, pattern, gears or scene. Each file is a single solid fill.

Palette: background_01 brass #B5893A, background_02 light brass #C9A24E, background_03 dark brass #8C6A2C, background_04 copper #B8653A, background_05 bright copper #CF7A48, background_06 dark copper #8A4A2A, background_07 verdigris teal #3E8C84, background_08 deep verdigris #2A6660, background_09 soot charcoal #2B2A28, background_10 warm soot #3A3532, background_11 parchment #E8D9B5, background_12 aged parchment #D6C294. Name the files background_01.png to background_12.png.

Output exactly 12 files.

Weights file: background_weights.json, equal weight 1 for each of the 12 file names. Write artifacts/base.png, artifacts/background_01.png .. background_12.png, and artifacts/traits.json: {"backgrounds":[{"file","name","weight"}...]} with weights summing to 100.