MOSGM-I: Matter-Originated Spacetime Gradient Model — Phenomenological Framework

This record contains the foundational phenomenological framework of the Matter-Originated Spacetime Gradient Model (MOSGM).

MOSGM proposes that spacetime curvature and gravitational response emerge directly from baryonic matter distributions, leading to threshold-dependent and environment-sensitive gravitational behavior without invoking particle dark matter.

This archive establishes priority and provides a citable reference for the MOSGM framework underlying subsequent theoretical and observational studies   
modified gravity, spacetime gradients, galaxy rotation curves, dark matter alternatives, threshold activation, power-law response, NGC 3198, gravitational lensing offsets, vacuum dormancy, emergent gravity
                                                
This record serves as the MOSGM-I reference for subsequent quantitative developments (MOSGM-II).