{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://vizcatalogue.dev/schema/nr.schema.json",
  "title": "Narrative skeleton",
  "type": "object",
  "required": ["code", "name", "ovp_version", "decision_style", "sections", "example", "qa"],
  "properties": {
    "code": {"type": "string", "pattern": "^NR-[0-9]{2}$"},
    "name": {"type": "string", "minLength": 3},
    "ovp_version": {"type": "string", "pattern": "^[01]\\.[0-9]+$"},
    "decision_style": {"type": "string", "enum": ["recommendation-with-owner", "options", "evidence-only"]},
    "sections": {
      "type": "array",
      "minItems": 2,
      "items": {
        "type": "object",
        "required": ["role", "guidance"],
        "properties": {
          "role": {"type": "string", "enum": ["claim", "evidence", "cause", "action", "owner", "context", "question", "options"]},
          "guidance": {"type": "string", "minLength": 10}
        }
      }
    },
    "example": {"type": "array", "items": {"type": "string"}, "minItems": 2},
    "qa": {"type": "array", "items": {"type": "string"}, "minItems": 1}
  }
}