The ℓ₀ = 3608 Lensing Oscillation from Ultralight Scalar Dark Matter: A Prediction of the Unary Field Theory

This preprint presents a robust, parameter-free prediction of the Unary Field Theory (UFT): a weak gravitational lensing oscillation at angular multipole ℓ₀ = 3608. Key Predictions: Arises from the quantum pressure of ultralight scalar dark matter (m_φ = 1.1 × 10⁻²² eV). Oscillation amplitude A = 0.104, derived from soliton-halo decomposition. Uniquely determined by the Jeans scale k_J(z=1) = 2.2 Mpc⁻¹. Observational Tests: Upcoming Euclid (2023-launched) and LSST (2025 first light) surveys are perfectly poised to detect this signature at >4σ significance within the next 3-5 years. A joint detection with 21-cm SKA data would provide irrefutable cross-probe confirmation. This work provides a clear observational target for testing the quantum nature of dark matter.