Scenario Workflow Authoring

Overview

A workflow has two representations: editor_info (the editable node graph: nodes, edges, inputKeys) and flow (the compiled runnable form). Authoring through MCP means writing the whole editor_info document: there are no per-node editing tools; every change is a read, modify, write of the full graph through workflow_create or workflow_update. Never hand-write flow: workflow_publish compiles editor_info into it and flips status to ready. Editing a ready workflow's editor_info leaves the stale flow running until you publish again.