Appendix

Modules that are re-exported from the breos namespace but aren’t part of the primary puzzle-piece surface — utilities, I/O helpers, model constants, and research-validation modules.

breos.utils	Utility functions for breos library.
breos.io	I/O module for data export and import.
breos.constants	Physical and model constants for battery degradation models.
breos.polysun_degradation	Polysun-style battery degradation model.