HγC O4: Narrower Comparative Calibration of Structured Near-Critical Populations in Galactic Phenomenology

This paper establishes the first narrower comparative calibration layer for structured near-critical populations in galactic phenomenology within the HγC framework. Earlier N-series work established band existence, band structure, and observational diagnostic language; O1 fixed the first explicitly galactic diagnostic morphology layer; O2 stabilized the first comparative morphology framework; and O3 introduced the first comparative estimator layer. O4 takes the next justified step by defining selective informative contrasts as the restricted domain in which narrower comparative calibration first becomes meaningful. Comparative center, breadth, asymmetry, and tail-supported persistence are carried into a first…