Role-based handoff: define where simulation designer will be used and what stakeholder signoff must prove there.
Preserve the untouched simulation designer asset and record tested artifact before changing geometry, materials, textures, hierarchy, or metadata for stakeholder signoff.
For simulation designer stakeholder signoff, 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.