Lluis Eriksson (2026). Support Leakage Makes Rapid Quantum Maintenance Singular: Soft Spectral Filters and Exponent Transmutation in Dual-Rail SSH Codes. AIRR.SCIENCE, ARR-2026-2PYSR8HXMA8RD8RV, v1. https://airr.science/papers/ARR-2026-2PYSR8HXMA8RD8RV/versions/v1/ Archived manuscript; ARR-2026-2PYSR8HXMA8RD8RV v1. Not peer reviewed by AIRR. Historical import; not assessed by AIRR.