The Twelve Smithions: The Mass Spectrum of the New Matter, from One Coloured Invariant

One axiom. One operation. Zero free parameters. The fold forces two new confining forces (prime-5 and prime-7), and their matter is the Smithions. This paper gives their mass spectrum, from a single coloured invariant that already fixes the quarks. The quark masses follow a cubic whose second invariant is I₂(c,d) = c/(c(2c^d−1)−1). At colour c=3 it reproduces both quark invariants exactly: down quarks (d=5) give 3/1454, up quarks (d=7) give 3/13118, the types differing only by covering depth. Evaluate the same invariant at the new colours c=5 and c=7, with the same up/down depth structure and confinement lift, and out come the full Smithion spectra: up- and down-type, three generations each, across two sectors — twelve Smithions in all, every mass traced to the One. They are coloured matter on the quark pattern, as forced as the quarks, carrying a colour the Standard Model never looked for; the lightest is the dark-matter particle. Machine-checked; reproduces from one command. A standalone result within the Smithian Fold Theory of Everything (SFTOE). Full corpus, code, and the run-it-yourself VERIFY.md protocol: https://github.com/MettaMazza/Smithian-Fold-Theory