Lluis Eriksson (2026). Finite-Dimensional Davies Interface Lemmas and TFIM Witness Tests for Separation-Dependent Decoherence Rate Envelopes. AIRR.SCIENCE, ARR-2026-79JR2RMHHP93RVAD, v1. https://airr.science/papers/ARR-2026-79JR2RMHHP93RVAD/versions/v1/ Archived manuscript; ARR-2026-79JR2RMHHP93RVAD v1. Not peer reviewed by AIRR. Historical import; not assessed by AIRR.