{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "ComputerUseTrace",
  "type": "object",
  "required": ["task_id", "decision", "steps", "metrics", "limits"],
  "properties": {
    "task_id": {"type": "string"},
    "decision": {"enum": ["success", "needs_approval", "review", "block"]},
    "steps": {"type": "array"},
    "metrics": {"type": "object"},
    "limits": {"type": "array", "items": {"type": "string"}}
  }
}