Generation harmonics at the Y-junction Three quark generations shown as successive radial excitations: each higher generation adds an internal counter-rotating boundary fold inside the same external topology, and threads an additional chirality-coherent sheet. Energy per fold increases with generation number — the inverted hydrogen spectrum from rigid confinement boundaries. n = 1 Fundamental n = 2 1st excitation n = 3 2nd excitation Type A: up 2.16 MeV Type B: down 4.7 MeV 1 sheet +1 internal fold Type A: charm 1,270 MeV Type B: strange 95 MeV 2 sheets +2 internal folds Type A: top 173,000 MeV Type B: bottom 4,180 MeV 3 sheets MeV GeV 100 GeV Rigid boundary → energy per fold ↑ Co-rotating core Counter-rotating fold Chirality sheet