model-property-graph

name	model-property-graph
description	Design a labeled property graph — labels, typed directed relationships, business-key identity, temporal edges, and a supernode plan. Fill templates/graph-data-model.md before any CREATE.

Skill: model-property-graph

Invoked by: graph-data-modeler (primary).

When to invoke: "model this as a graph"; "what labels and rel types?"; "this celebrity node kills traversals."

Output: a filled ../../templates/graph-data-model.md plus lint-clean MERGE sketches the user runs.

Procedure

1. Confirm choose-graph-or-not already returned LPG. If not, go back.
2. Read ../../knowledge/lpg-modeling-catalog.md.
3. Name labels (types, not states) and business keys.
4. Type every relationship and give it a direction. Put link payload on the edge.
5. Write a supernode plan for any celebrity label (partition, start from the other side, bound hops).
6. Emit MERGE-on-business-key sketches. No untyped -[]-. No unbounded *.
7. Run ../../scripts/lint_graph_shape.py on snippets before handing them over.

Guardrails

• Untyped ()-[]-() is a bug.
• CREATE on every ingest duplicates the graph — MERGE on the business key.
• RDF wants IRIs + SPARQL, not this skill.