NSk--ParticleStructure Particle Structure in the NSk/ψ Program: Chirality, Particle--Antiparticle Conjugation and Quantum Numbers

NSk--ParticleStructure establishes the particle-structure module in the NSk/ψ program. Its goal is to construct a stable structural state record that downstream modules can use independently of the final mass value and independently of the later choice of a mass-generation mechanism. The core of the module includes the particle identity record PartID, the quantum-number package QNum, particle–antiparticle conjugation, the matter/antimatter/undetermined class, the complexity status of a state, a binding rule, and a rule for inheriting structural data in composite states. In CORE-B, the module further develops a directional-profile framework, a dominant-direction classifier, and a local readout with a formally proved range 0,1. For the reference q3D realization with A = diag(1,4,2), the module provides a complete classification of seven canonical profiles grouped into three families, together with invariance of profile and readout under orientational conjugation and Lipschitz stability of the local readout. The module also exports a legal structural input record for mass branches and a conditional bridge to the Dirac framework, closing chirality uniqueness on the spinor-resolved branch. In this form, NSk--ParticleStructure serves as a stable structural interface for Matter, MassLadders, Higgs, Neutrino, VisGeom, and Dirac.