{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "dd-flow/specify@1",
  "type": "object",
  "additionalProperties": false,
  "required": ["schema_id", "summary", "requirements", "acceptance_criteria", "sections"],
  "properties": {
    "schema_id": {"const": "dd-flow/specify@1"},
    "summary": {"type": "string", "minLength": 1},
    "requirements": {"type": "array", "minItems": 1, "items": {"$ref": "#/$defs/requirement"}},
    "acceptance_criteria": {"type": "array", "minItems": 1, "items": {"$ref": "#/$defs/acceptance"}},
    "sections": {"$ref": "#/$defs/sections"}
  },
  "$defs": {
    "requirement": {
      "type": "object",
      "additionalProperties": false,
      "required": ["id", "statement"],
      "properties": {
        "id": {"type": "string", "pattern": "^R-[0-9]{3,}$"},
        "statement": {"type": "string", "minLength": 1}
      }
    },
    "acceptance": {
      "type": "object",
      "additionalProperties": false,
      "required": ["id", "statement"],
      "properties": {
        "id": {"type": "string", "pattern": "^AC-[0-9]{3,}$"},
        "statement": {"type": "string", "minLength": 1}
      }
    },
    "sections": {
      "type": "object",
      "additionalProperties": false,
      "required": ["problem_and_scope", "acceptance_and_verification", "gaps_defaults_and_project_facts", "assessment_and_protocolize_handoff"],
      "properties": {
        "problem_and_scope": {"type": "string", "minLength": 1},
        "acceptance_and_verification": {"type": "string", "minLength": 1},
        "gaps_defaults_and_project_facts": {"type": "string", "minLength": 1},
        "assessment_and_protocolize_handoff": {"type": "string", "minLength": 1}
      }
    }
  }
}