{
  "schemaVersion": "1.0",
  "sceneId": "blog-er",
  "fromRevision": 11,
  "toRevision": 12,
  "summary": { "added": 2, "removed": 0, "modified": 0 },
  "added": ["tag", "e-tagged"],
  "removed": [],
  "modified": [],
  "scenario": "A new migration introduces a Tags table and a many-to-one relationship from Posts to Tags. The agent parsed the migration, added the new entity (with id, name columns) and a labelled relationship edge, and committed revision 12. The diff lists exactly what reviewers need to look at."
}