This paper is part of the Informational Mechanics (IM) framework, a coherence- and admissibility-based approach to physical description. The document is published as part of the first public wave of IM papers, providing a regime-based phenomenological bridge to established cosmological observations. This work presents a global regime-based interpretation of dark-energy and Λ-phenomenology as a homogeneous bookkeeping remainder required for global geometric comparability under causal constraints. No modified dynamics or new physical substances are proposed.