{
  "type": "object",
  "properties": {
    "action": {"type": "string", "enum": ["clarify", "propose", "redirect"]},
    "message": {"type": "string"},
    "suggestions": {"type": "array", "items": {"type": "string"}},
    "agreement": {
      "type": ["object", "null"],
      "properties": {
        "title": {"type": "string"},
        "topic": {"type": "string"},
        "objectives": {"type": "array", "items": {"type": "string"}},
        "scope": {"type": "string"},
        "exclusions": {"type": "array", "items": {"type": "string"}},
        "practice_approach": {"type": "string", "enum": ["concept_explanation", "compare_alternatives", "evidence_interpretation", "mini_case"]}
      },
      "required": ["title", "topic", "objectives", "scope", "exclusions", "practice_approach"],
      "additionalProperties": false
    }
  },
  "required": ["action", "message", "suggestions", "agreement"],
  "additionalProperties": false
}