Commit History
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feat: port polygon fill with Sutherland-Hodgman clipping, 26 snapshot tests
Pure Rust polygon fill pipeline: Sutherland-Hodgman 4-edge clipper + scanline rasterizer using DDA edge stepping. Add fill_hline to PixelWriter trait. All 26 snapshot tests pass (11 lines, 8 thick lines, 5 polygons, 2 pixel grid basics). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>b62b0ea
