A Pre-Inflationary Bounce at Nuclear Density Predicts the CMB Quadrupole Suppression: The CCEGA Cosmological Sector

CCEGA framework predicts a modified Friedmann equation H² = (8πG/3)ρ(1−ρ/ρ_c), which produces a cosmological bounce at ρ = ρ_c where H = 0 and the universe transitions from contraction to expansion without a Big Bang singularity. Using the critical density ρ_c ≳ 10 ρ_nuclear constrained independently by neutron-star observations, we derive a bounce wavenumber k_bounce ≈ 1.8×10¹⁸ Mpc⁻¹. After N_inf e-folds of inflation, this scale is stretched to CMB multipole ℓ_bounce = k_bounce χ_* exp(−N_inf). For N_inf ∈ [50.9, 54.2] — the lower portion of the observationally allowed range [50, 65] — the bounce produces suppression of primordial power precisely at ℓ = 2, 3, coinciding with the low-multipole anomaly observed by Planck. This prediction is parameter-free: ρ_c is fixed by neutron-star constraints, not adjusted to fit the CMB. LiteBIRD (~2028) will measure N_inf to ±2 e-folds via tensor-mode observations, providing a decisive test. Combined with the gravitational-wave echo discriminant detectable by the Einstein Telescope in 2035, CCEGA has two independent falsifiable predictions across two observational windows, both arising from the same critical density ρ_c fixed by neutron-star physics.