Workflow JSON import and export

Portable workflow JSON stores graph structure, stable node identities, versions, parameters, and declared node-pack requirements. It does not embed slide pixels, layer source content, local runtime input IDs, or companion authorization tokens. A workflow may report that a required pack is unavailable; importing it does not install code automatically.

Read the Python workflow guide and official node-pack guide for current schema and pack behavior. The approved sources do not define workflow JSON as an interchange format for arbitrary viewer state.