CCEGA Validated Against Five Observational Datasets: NICER, GW170817, and PSR J0952-0607

We present a systematic validation of the CCEGA framework against five independent observational datasets. CCEGA predicts a density-dependent gravitational coupling G_eff(ρ) = G·exp(−ρ/ρ_c) with ρ_c ≥ 10 ρ_nuclear, producing neutron-star radii ~10% larger than GR and maximum masses ~5% larger. Against NICER mass-radius measurements, all three pulsars (J0437-4715, J0030+0451, J0740+6620) are consistent at ≤1.0σ. Against GW170817, the predicted tidal deformability ratio Λ_CCEGA/Λ_GR = 1.570 is consistent with the 90% credible interval for soft-to-moderate equations of state (Λ_GR < 369). Against PSR J0952-0607 (M = 2.35 ± 0.11 M☉, Romani+2025), CCEGA provides a natural explanation: if the GR equation of state supports M_max^GR = 2.24 M☉, the 5% CCEGA enhancement gives M_max^CCEGA = 2.35 M☉ — exactly the observed value. No observation excludes CCEGA. The framework is consistent with all current neutron-star data, with decisive tests pending from LIGO O5 (tidal deformability), future NICER precision (radii), and the Einstein Telescope (gravitational-wave echoes, ~2035).