Vacua, light, and the forgotten quantum: the fine-structure constant and the gravitational coupling from the macrobiotic quantum (submitted to Proceedings of the Royal Society A)

Author's submitted manuscript (preprint), under consideration at Proceedings of the Royal Society A. This single-author theoretical paper isolates the strictly physical core of Macrobiotic Quantum Theory (MQT). It argues that every physical arrangement in the universe arises from the interplay of three ingredients only: the dual vacuum, light, and the macrobiotic quantum (MQ) — Einstein's forgotten quantum, taken as a punctual source for dimensional formation. From a punctual MQ and a single temporal tick, the speed of light extrudes spatial extent, so c is the dimension-forming rate. The dual vacuum carries a vacuum direction θ_v; the two cosmic anchors (c and the Planck length) balance with no fitted parameter at the magic angle arccos(1/√3) ≈ 54.7356°. The fine-structure constant and Newton's constant are co-modulated by one information field, α_eff = α(1 + ηI + η'ε) and G_eff = G_0(1 + βI), coupling seamlessly to QED and reducing to it exactly at a uniform background. The central empirical content is a falsifiable prediction: α and G, carried by the same field, vary in the fixed ratio η/β, so any drift of α must be accompanied by a correlated drift of G. The absolute value of α is presented as an order-of-magnitude identification, not a closed-form derivation. General relativity and ordinary electromagnetism are recovered in the appropriate limits. The note stays strictly on the public MQT surface.