Pinterest verification as v1.3 validation — specification field test passed

The Pinterest verification — the first full v1.3 verification case — validates the v1.3 specification's core features: the 4-tier status taxonomy (Pinterest assigned ✅ VERIFIED), the evidence standard (6-element checklist, 4-phase pipeline), the triple-binding logic (VERIFIED-only send), and the review chain (technical → visual → non-self). All components functioned correctly in a live verification scenario. The 10-minute end-to-end time validates the framework's efficiency claims. Pinterest's successful verification provides a template for all future platform verifications under v1.3.