Original data · robustness across the catalog
Robustness benchmark
How every verification pack holds its discriminating power under semantics-preserving perturbation of its own test items — reordered docs/tools, injected distractors. A pack keyed to the exact surface form of its frozen test set collapses here.
Every pack · discrimination retained under input perturbation
skip = robustness is a documented skip for this cell: its reference agents decide on structural flags, not perturbable content, so there's no honest perturbation to run (browser-injection, ai-act-checklist). Not a failure — the axis simply doesn't apply to that item shape.
Robustness is one of the six authority axes — robustness across the input space. A pack that only ranks the panel correctly on the exact wording and order of its frozen items was measuring surface form, not capability.