Role-based handoff: define where product marketing designer will be used and what vendor brief must prove there.
Preserve the untouched product marketing designer asset and record deliverables before changing geometry, materials, textures, hierarchy, or metadata for vendor brief.
For product marketing designer vendor brief, Keep the brief, before-and-after asset, acceptance note, next owner, and due decision. Product, marketplace, regional, and compliance decisions still require the responsible specialist.