{
  "sandboxes": [
    {
      "name": "docker-agent-<hash>",
      "id": "<uuid>",
      "agent": "docker-agent",
      "status": "running",
      "last_used_at": "<ts>",
      "workspaces": [
        "$CAPTURE/fixtures/repo-sandbox",
        "$CAPTURE/fixtures/agents:ro",
        "$CAPTURE/fixtures/repo-sandbox/.m101/cache/sandbox-kits/<hash>:ro",
        "$CAPTURE/fixtures/repo-sandbox/.m101/cfg:ro"
      ],
      "created_at": "<ts>"
    }
  ]
}