Avatar Species 1: goblin and split colored side hair #1210

Parent

Part of #1209.

What to build

A Human opens a PersonaBot's Avatar editor, picks the goblin Avatar Species and styles left and right side hair separately, each with its own color. They save it and see the goblin in the roster and as a Window Companion that blinks, turns, gazes and speaks. This is the first vertical path through BotPixel (species base, split side hair, new recipe version) → the PersonaBot owning module (save and re-read) → Client editor → Avatar and Window Companion rendering.

Acceptance criteria

• BotPixel renders a goblin species base: green-leaning suggested body colors, pointed ears and small tusks, on the existing pixel bust rig.
• The goblin supports the full rig contract: transparent companion surface, current anchors, gaze, blink, left/right turns and closed/half-open/open mouths.
• Left and right side hair are separate pieces with independent styles and optional colors that default to the main hair color.
• Switching between human and goblin keeps hair, outfit and accessories. Anything the species cannot show is hidden and kept, with a visible note, and returns when the Human switches back.
• A recipe using species or split side hair carries a raised asset/schema version. Older Clients show the saved snapshot with ADR-0118's fallback note.
• Existing recipes render byte-identically: BotPixel's golden fixture is unchanged, and new golden entries cover the goblin at legal extremes and turned poses.
• Save → re-read through the PersonaBot owning module round-trips the new fields. Validation rejects out-of-range values.
• On an isolated verified DSH Profile, a goblin Bot animates and speaks in a Window Companion with a real DM reply. Before/after screenshots in light and dark themes are attached to the PR.
• The BotPixel release precedes the DeepSeekBot consumer change.

Blocked by

None (can start immediately).