The Early Supermassive Growth Paradox: Observations from the James Webb Space Telescope (JWST) revealed mature billion-solar-mass black holes when the universe was under 1 Gyr old. The discovery of close dual systems like LID-1166 demonstrates that gas-rich galaxy mergers drive heavy dynamical friction and super-Eddington accretion bursts, accelerating growth by orders of magnitude compared to isolated stellar seeds.