Target parity viewer
Compare static and React at 390, 768, and 1440 pixels with shared anchor evidence.
Public proof explorer · retained evidence
Ten fixed product briefs, three canonical viewports, one source-bound artifact identity per case, and a verified semantic correction you can trace from preview to receipt.
Case workspace
Select a case, change viewport, then inspect the qualitative review, exact hashes, browser evidence roles, and approved semantic correction.
Loading the retained proof contract.
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Every dimension must be at least 3/5, the mean must be at least 4/5, and any critical issue fails the case.
Proof data could not be loaded. The retained JSON contract remains available directly.
Assurance boundary
The corpus pairs eight product gates with six negative controls so failure behavior stays as inspectable as the healthy screenshots.