Galaxies, rotation curves, and compact objects

Galaxies are read as relational carrier regimes, not merely as mass distributions inside a background spacetime. Flat rotation curves are attributed to D-sector capacity-gradient structure rather than to an independent dark-matter particle sector. White dwarfs, neutron stars, and black holes form a compact-object ladder of the same τ-gravity / defect-capacity dynamics. These are high-risk empirical readouts: lensing, Tully – Fisher, Bullet Cluster, and compact-object observations constrain the claim.