freshness-contract

Categorical decision table for reusing cached evidence — when an artifact you already read, a banked test result, a primer, a worker report, or a probe verdict is still trustworthy, and when it must be spot-checked or re-verified. Inputs are observable (artifact class, age anchors, intervening writes, named invalidators); output is reuse / spot-check / re-verify / accept-labeled-risk. Conservative by construction —…