docs: update validation results — Green 75%, White 90%, overall 92.3%

fix: correct CHROMATIC_TARGETS — canonical source + updated validation (92.3%)

feat: add refractor_cdm.onnx (1.4MB, 9-class color classifier)

fix: rewrite README with clean line endings and corrected YAML frontmatter

Update README.md

Update README.md

Update README.md

Update LICENSE

initial commit