The active supplier class names, sorted, mirroring the value exports of the @/suppliers barrel. See the module header for how it stays dependency-free.

Failure share at or above which a category counts as "excessive". Below this a supplier is treated as healthy — occasional failures are normal. Total failure (a ratio of 1) escalates to the critical status for that category.

Exported so callers and tests can reference the threshold rather than duplicating the literal.