Interactively build a Narrative identity graph workflow from one or
more first-party datasets and (optionally) third-party data sources.
Confirms each input dataset is mapped to the Rosetta Stone graph
edge attribute (mapping it via /generate-rosetta-stone-mappings if
not), then composes and submits a workflow that unions every edge
source and labels connected components.
Use when: "build an identity graph", "generate an identity graph",
"create an identity graph", "stitch these datasets into a graph",
"make a graph workflow", "label connected components on these
datasets", "I want a person graph / household graph / device graph".
(narrative-identity)