Observer Normalized Scale Relativity: Coherence Constraints on Global Physical Inference and Disk Galaxy Dynamics

This work presents an empirical application of the Observer-Normalized Scale Coherence (ONSC) framework, in which global physical inference is constrained by coherence rather than by additional dynamical entities or geometric expansion of space. The framework itself is defined in Observer-Normalized Scale Relativity: A Coherence Constraint on Global Physical Inference (DOI: 10.5281/zenodo.18356675) and is assumed here without re-derivation. Using this framework, we test the coherence principle empirically with the SPARC disk galaxy sample. We find that acceleration-domain normalization exhibits substantially reduced scatter relative to density-based formulations, particularly when galaxies are grouped by intrinsic morphology. These results indicate that a significant portion of apparent dynamical discrepancy arises from normalization mismatch rather than missing mass, while preserving local relativistic physics. This record includes explicit links to the underlying stress-testing analysis and associated data and code deposits, clarifying the methodological lineage of the reported results.