One-Octonion Brane-Bulk Framework - Omnibus Papers 0-CCCXXI (June 2026)

Omnibus edition 0-CCCXXI (26 June 2026, 1982 pages). Built by appending two papers to the 0-CCCXIX edition (DOI 10.5281/zenodo.20801246): (CCCXX) "CDG-2 Is Not Yet a Mass Measurement" - a pre-registered three-band coherent-sump velocity-dispersion discriminator for the "darkest galaxy" in the Perseus cluster, registering prediction P106 (DOI 10.5281/zenodo.20946839); and (CCCXXI) "A Gudermannian-Mobius Matter Lagrangian for the OOB Framework" - the matter-sector Lagrangian beside the SU(3)xSU(2)xU(1) gauge sector, with Dirac/Pauli reduction, the chirality descent gamma5 = L3 L5 L6 L7 = -Gamma, parameter-free CP phases from the B(1,4) holonomy, the loxodromic complex length, and the complete braided many-body sector with 4D lift (DOI 10.5281/zenodo.20946644). The sequence skips the retired number CCCXIV (a duplicate of CCCXII). Community: one-octonion-brane-bulk. Author: Bharathi Dasan Jagadeesan, M.D., University of Minnesota. ORCID 0000-0002-1143-941X. Concept DOI 10.5281/zenodo.19185171 always resolves to the latest edition.