dsh-sprite-gen: AI Sprite Generation Plugin for DeepSeek Harness

`dsh-sprite-gen` is a plugin integrated into DeepSeek Harness (DSH) that uses AI to directly generate sprite sheet assets for games. It supports automatic cropping, grid layout, and animation sequence generation, and can export GIFs. The plugin integrates four image generation approaches—Gemini Flash, Stable Diffusion, Agnes AI, and local ComfyUI—covering multiple asset types, including characters, effects, weapons, and parallax backgrounds. By offering batch generation tools, it significantly improves the efficiency of game asset development workflows.