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v8: Prismatic After-images #21

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8 changes: 8 additions & 0 deletions juice-man-repo/specs/level_1/v8.md
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# Level 1 — v8

Prismatic After-images create a vivid, ghostly trail of Pac-Man's movement, turning his path through the rotating maze into a sweeping rainbow ribbon.

- **After-image System**: Pac-Man generates a semi-transparent clone of himself every 60ms. Clones are stored in a fixed-size queue and fade out over 500ms.
- **Chromatic Shift**: Each after-image is assigned a color from the `RAINBOW` palette, cycling through colors sequentially to create a continuous spectrum trail.
- **Rotation Mapping**: After-images are anchored to the playfield's coordinate system, meaning they rotate and spin perfectly with the maze and Pac-Man, creating elegant, colorful spirals as he moves.
- **Visual Polish**: After-images use a `globalAlpha` fade and a slight scale-down (from 1.0 to 0.8) as they age, creating a tapering effect.