Unification of Magnetism and Gravity: Yang-Energy Dynamics in the Yin-Shell Constraint Network

This paper proposes a conceptual framework: magnetism and gravity are not two independent fundamental forces, but rather two manifestations of the same "Yin-Shell — Yang-Energy" binary structure at different scales. The direct drag and deflection of Yang-energy by the Yin-shell manifests as magnetism at the microscopic scale; the imbalance caused by bound Yang-energy on the Yin-shell network triggers a collective geometric response of the network, manifesting as gravity at the macroscopic scale. Mass is introduced in this paper as the source of gravitational response strength, and its origin and the effect of constraint-mode transitions on mass will be discussed in a separate paper. Under normal conditions, gravity is proportional to the total mass; after crossing the response threshold, the constraint mode changes, and this proportionality may break down. The equivalence principle is not a postulate, but a corollary of the proportional relationship between the scale of the Yin-shell network and the total amount of bound Yang-energy. Gravity is the structural stress of the Yin-shell network and does not require gravitons. This paper presents four testable predictions and clarifies its relationship with existing theories: this framework does not deny known phenomena, but provides a unified Yin-shell—Yang-energy ontological explanation for magnetism, mass, and gravity. Quantitative derivations will be provided in subsequent papers.