Nine Independent Cosmological Probes Consistent with the Parameter-Free U-Cell Model: Omega_m=0.3166, w=-1, Omega_b h²=0.02246

Summary paper of the UCM observational test suite (Papers 14b-23).Tests UCM (Omega_m=0.3166, w=-1, Omega_b h²=0.02246) against nineindependent cosmological probes: DESI DR2 BAO (13 pts), eBOSS DR16 BAO (15 pts), Pantheon+ SN (24 pts), DES SN5YR (1820 pts), Cosmic Chronometers (33 pts) — total N=1905, cumulative ΔBIC=+19.3 (decisive evidence on Jeffreys scale). Three CMB tests: Planck 2018 acoustic scale at 0.22sigma (CLASS), ACT DR6 w=-1 at 0.6sigma, KiDS Legacy S8 at 0.9sigma. All predictions from a single constant f_cold=sqrt(2-pi/2). Companion letter to PRL submission es2026apr03_552.