Unified Field Theory · ZHK Three-Dimensional Spatial Ontology and Mass-Charge Geometric Coupling Dynamics

This paper constructs the ZHK‑ENG geometric‑dynamics framework which regards three‑dimensional space as fundamental ontology, where time is parametrically described via light‑speed spatial evolution R=CT. Starting from four axioms (P1‑P4), this framework rejects the four‑dimensional spacetime paradigm treating time as an independent dimension. A 45° three‑dimensional cylindrical‑helix geometry and 3D mass‑charge Jacobian‑tensor mapping are introduced to interpret the geometric origin of fine‑structure constant α. Core logical result: the single‑axis mass‑charge coupling coefficient satisfies G=α, yielding the volumetric transformation factor α³ for three‑dimensional spatial mapping. Combined with the electron Compton scale and three‑dimensional topological constraints, a testable characteristic time period T≈1.16 ps is derived. Three falsifiable experimental predictions are given: THz characteristic resonance near 0.86 THz, non‑standard corrections in high‑energy electron‑scattering, and macroscopic electromagnetic‑gravitational coupling effect under specific electromagnetic excitation. This work provides three independent experimental paths to verify or falsify the ZHK‑ENG theoretical framework. Associated Manuscripts:The core mathematical derivations and the full axiomatic framework of this preprint are based on the foundational ZHK series: Unified Field Theory (UFT V7) - Full Version (Manuscript ID: UFT-V7) UFT V7 Core Essentials (Archival ID: ZHK-0129-CORE)The detailed derivation of the mass-charge topological coupling constant k is available in ZHK-PAPER-K-002.