Lluis Eriksson (2025). Operational Coherence Maintenance and the Quantum-Classical Boundary: Formal Definitions, Falsifiable Protocols, and an Outlook for Cognitive Systems. AIRR.SCIENCE, ARR-2025-199995HEM58RZAPN, v1. https://airr.science/papers/ARR-2025-199995HEM58RZAPN/versions/v1/ Archived manuscript; ARR-2025-199995HEM58RZAPN v1. Not peer reviewed by AIRR. Historical import; not assessed by AIRR.