Weak-Representation Soldering of the Axis Common Matter Carrier: Common-Body Lepton Architecture, Higgs-Resolved Components, and the Physicalization Boundary

This work develops a common-body lepton architecture for the Axis Model, connecting the established charge-three common-envelope body to a conditional weak and chiral lepton structure. A finite-fiber soldering construction generates the weak doublet algebra, while Parent-charge equivariance selects the common-carrier realization within the existing direct-product gauge structure. Higgs-ray projectors then resolve charged and neutral components on the shared body and produce an exact longitudinal-response null in the neutrino sector. Extending the weak bundle to its full frame-U(2) structure yields the conditional lepton content consisting of a left-handed doublet and right-handed electron and neutrino sectors, together with their relative central characters and canonical Dirac Yukawa channels. The revised construction also makes explicit that these degrees of freedom are internal states of one translating common body; treating the odd lepton sector as a separate propagating field would instead require an additional binding or hybridization mechanism. This version sharpens the physicalization boundary by separating the bosonic common-body stability operator from the fermionic population and propagation problem. A physical completion requires common-body spectral overlap, controlled fermionic kinetic support, a neutral one-particle sector, and an infrared-complete dressed charged asymptotic sector. Numerical charge, masses, generation selection, flavor normalization, and the physical hypercharge connection remain open.