MID/QC Applied Substrate Series 5 - Torsion Field Interactions: How Magnetic Geometry Controls Coherence Propagation

Magnetic geometry is typically treated as a field‑level influence on spin or domain alignment. In the MID/QC framework, magnetic geometry is reinterpreted as a torsion‑shaping mechanism that directly governs coherence propagation within the quantized substrate. This paper develops the substrate‑native model in which torsion fields, magnetic alignment, and coherence channels form a coupled system: magnetic geometry reduces destructive torsion, stabilizes coherence flow, and enables long‑range propagation without collapse. The result is a unified architecture explaining magnetic hardening, torsional redirection, coherence channel reinforcement, and substrate‑level propagation behavior. This work extends the magnetic stabilization model introduced in Series 4 and anchors the torsion‑focused branch of the Applied Substrate Series.