ICO Favicon

{
  "method": "tools/call",
  "params": {
    "name": "ico",
    "arguments": {
      "files": [{ "filename": "example.pdf", "b64": "..." }],
      "params": {},
      "delivery": { "expiry_days": 1, "allowed_downloads": 50 },
      "client_ref": "my-job-123"
    }
  }
}