This document constitutes an official ontological addendum to the Root-Self and RSDA framework. Its purpose is not to revise or contradict prior work, but to explicitly refine and stabilize the ontological assumptions underlying narrative identity, process continuity, and substrate substitution. The addendum reframes identity not as a capturable object, structural node, or transferable entity, but as a continuous, self-referential operational process. This clarification resolves conceptual ambiguities related to duplication, agency simulation, and identity persistence across heterogeneous substrates. The work positions RSDA as a process-centered framework aligned with contemporary systems theory, phenomenology, and cognitive continuity research, strengthening its internal coherence without altering its foundational claims.