{
  "type": "object",
  "properties": {
    "matched_index": {
      "type": "integer",
      "description": "Matched condition number (1-based)"
    },
    "reason": {
      "type": "string",
      "description": "Why this condition was matched"
    }
  },
  "required": ["matched_index", "reason"],
  "additionalProperties": false
}