Role-based handoff: define where pipeline technical director will be used and what vendor brief must prove there.
Preserve the untouched pipeline technical director asset and record deliverables before changing geometry, materials, textures, hierarchy, or metadata for vendor brief.
For pipeline technical director 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.