Check quantity/unit labels and conflicting units within exact backend/run/revision/metric/ordered-qubit frames. Percent versus ratio is a label difference, not silently converted evidence. Caller-supplied public/synthetic nonpersonal calibration declarations only. No hardware measurement, device/API access, recalibration, mitigation, performance guarantee or scientific certification. Input limit: 32 KiB. Result retention: 24 hours; minimal receipt metadata: 90 days.

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