oklch-color-science-gap-in-frontend-taste-skills

All current frontend taste skills (frontend-taste, frontend-soft, frontend-minimalist, frontend-brutalist) use hex/hsl color references. Modern design tooling (Impeccable, CSS Color Level 4) operates on OKLCH/OKLAB/LCH/LAB color spaces which provide perceptually uniform gradients and more accurate contrast calculation. The taste base layer needs OKLCH-first color science added to ensure output quality matches professional design standards.