Lluis Eriksson (2026). Exact Memory of Direct-Sum Spectral Fan-Out: Generic Maximality, Colliding Targets, and the Three-Line Phase Diagram. AIRR.SCIENCE, ARR-2026-33BE6K3HW78F4T7F, v1. https://airr.science/papers/ARR-2026-33BE6K3HW78F4T7F/versions/v1/ Archived manuscript; ARR-2026-33BE6K3HW78F4T7F v1. Not peer reviewed by AIRR. Historical import; not assessed by AIRR.