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Growth Velocity Policy Gate

Dated height measurements remain source records; no age threshold, cm/year interpretation, or PHV inference is produced without an approved policy.

Growth-velocity interpretation is locked

No approved age/capacity policy exists. This surface does not calculate height velocity, compare age thresholds, or infer a PHV window.

Source records remain separate

Dated height measurements can still be stored in growth tracking. They are not converted here into cm/year, a typical/atypical label, a growth-spurt signal, or a training recommendation.