Planck Remnants and the Origin of Cold Dark Matter within the HRDCC Framework

The microscopic origin of cold dark matter remains one of the principal open problems of modern cosmology. While the standard ΛCDM model successfully describes the large-scale evolution of the Universe, it does not identify the physical nature of the dominant non-baryonic matter component. Among the numerous candidates proposed over the past decades, stable Planck remnants produced by Hawking evaporation of primordial black holes represent one of the most physically motivated compact-object scenarios. Within the Holographic Rotation-Driven Cyclic Cosmology (HRDCC) framework, we develop a phenomenological interpretation in which the effective cold-dark-matter sector introduced previously is interpreted in terms of an inherited population of stable Planck remnants. In contrast to conventional remnant scenarios, where the present relic abundance originates within a single cosmological history, the HRDCC framework interprets the effective remnant population as the cumulative consequence of inherited compact gravitational relics persisting across successive mature cosmological cycles through the regularized Holographic Transition Core (HTC). Beginning with primordial black-hole formation and Hawking evaporation, we formulate the effective cosmological evolution of the inherited remnant population and introduce its contribution to the effective cold-dark-matter sector. The cumulative evolution is parameterized by the effective evolutionary state parameter ξ, which characterizes the macroscopic inherited cosmological state rather than a microscopic time coordinate or cycle counter. The resulting phenomenological description remains fully consistent with the effective cosmological framework established in Paper~I while providing a physically motivated microscopic interpretation of its effective cold-dark-matter component. The present work intentionally remains phenomenological. It does not derive the microscopic quantum-gravitational mechanism responsible for remnant stability, inheritance through the HTC, or black-hole interior dynamics. These questions are reserved for dedicated subsequent papers within the HRDCC publication program. This manuscript constitutes the first paper of the HRDCC publication program. It is distributed as a preprint and has not undergone formal peer review.