Visual Validation

Validate claims, not polished frames. Keep each verdict scoped to one declared claim so evidence for appearance cannot substitute for mechanism, timing, or lifecycle proof. The owning subject skill defines mechanism truth and failure signatures; this skill defines how to falsify them.

1. Predeclare every claim

For each claim, record:

• class: visual, mechanism, temporal, performance, GPU attribution, resource, or lifecycle;
• invariant and truth source;
• observable and the diagnostic that isolates it;
• native-domain metric, units, alignment, mask, and aggregation;
• acceptance gate fixed before candidate inspection;
• blocking failure and required evidence.