{
  "type": "object",
  "properties": {
    "trait_updates": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "trait_name": {
            "type": "string",
            "pattern": "^[a-zA-Z]+$",
            "description": "Single word trait name (shy, confident, romantic, etc.)"
          },
          "action": {
            "type": "string",
            "enum": [
              "create",
              "strengthen",
              "weaken"
            ]
          },
          "new_strength": {
            "type": "integer",
            "minimum": 1,
            "maximum": 10
          },
          "description": {
            "type": "string",
            "maxLength": 60,
            "description": "Very short description of the trait itself."
          },
          "reasoning": {
            "type": "string",
            "maxLength": 80,
            "description": "Brief explanation why this observation affects this trait (max 80 chars)"
          }
        },
        "required": [
          "trait_name",
          "action",
          "description",
          "reasoning"
        ]
      },
      "maxItems": 2,
      "description": "Max 2 trait updates per observation. Empty array if no trait impact."
    }
  },
  "required": [
    "trait_updates"
  ]
}