Sub-ticket of MARS-201 Accept .webp uploads on práctica RX intake (/practicas/nueva + /mi-cursada/[id]/editar): iPhones export .webp by default and the client format gate rejected it, blocking real iOS users (5 toast hits June-24, surfaced in UX-pain analysis). Fix = client-only widen: add webp to both image-client.ts gauntlet regexes + the accept attrs on create+edit forms; the canvas re-encodes webp→jpeg before upload so the SERVER stays jpeg-only (image-api.ts untouched — keeps libwebp decode surface off our infra, audit invariant). Shipped 6727a52 / v2.22.7, coder+audit 2-way consensus, Elazar pre-authorized. Closing on PASS. · mars