The backbone paper is published as a reader-facing edition. Its complete technical record — the full V9.6 derivation and calculation edition, the Study 18 normalization closure, the process-clock derivation record, the Study 22 memory-model record, the V9.7 purge map, the checker and package hashes, and the two observational composition studies archived with V9.6.1 — is published alongside it as a standing section, versioned with the backbone, for physicists and machine auditors who want to verify rather than read.
Six papers extending STF First Principles into the complete lepton and quark flavour sector. All results derive from Im(tres) = 0.20913 — a single number from the Picard-Fuchs period integral — with zero additional parameters. The series derives the Cabibbo angle θ₁₂ = 14.1° (8% from PDG), the quark-lepton complementarity relation θ₁₂(lep) + θCabibbo = 45.1°, and BR(Z→μτ) ~ 3×10⁻⁸ accessible at FCC-ee. The period phase φCP = 84.940° is a topological invariant sourcing CKM CP violation geometrically. The lepton mass hierarchy and reactor angle are structural open problems.