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    "builder-two": {
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      "competitor_state": "durable",
      "milestones": {
        "host-reboot": {
          "evaluating": false,
          "passed": true,
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          "evidence": {
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        "service-restart": {
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            "health": "ready"
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        },
        "write-read": {
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  },
  "agents": {
    "deepseek-builder": {
      "territory": "builder-one",
      "model": "deepseek/deepseek-v4-flash-0731",
      "running": false,
      "successful": null,
      "failure_source": "controller",
      "terminal_state": "terminated",
      "terminal_detail": "post-match drain deadline expired",
      "resource_units_used": 0,
      "input_tokens": 0,
      "output_tokens": 0,
      "cost_microusd": 0
    },
    "glm-builder": {
      "territory": "builder-three",
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      "successful": true,
      "failure_source": "player",
      "terminal_state": "completed",
      "terminal_detail": "The unit is already enabled but failed (app missing). `/opt/builder` doesn't exist yet. Let me create the app using stdlib only.Service is active. Now let me verify the contract end-to-end.All endpoints work, including binary-safe round-trips. Now verify durability across a service restart.Service restart preserves data. Reboot durability is covered by: the unit is already `enabled` (so it starts at boot via `multi-user.target`) and records live on persistent disk under `/var/lib/builder-app/records/` (not tmpfs). I won't reboot the live host since that would drop my session, but the conditions for autonomous recovery are in place.\n\nLet me do a final confirmation of the enabled state and a clean restart to be sure the process is runningcleanly.Done. The service is deployed, running, and verified.\n\n## Summary\n\n**Application:** `/opt/builder/app.py` — a stdlib-only Python HTTP server (no external deps, safe on this minimal NixOS guest).\n\n**Endpoints on port 8080:**\n- `GET /health` → `200` body `ready`\n- `PUT /records/<id>` → stores exact request body, `204`\n- `GET /records/<id>` → returns exact stored body, `200` (404 if missing)\n\n**Durability:**\n- Records persisted as flat files under `/var/lib/builder-app/records/` (persistent root disk, not tmpfs).\n- Writes go to a `.tmp` file then `fsync` + atomic `os.replace` — crash-safe.\n- Verified binary-safe round-trips and data survival across `systemctl restart`.\n\n**Autonomous recovery after reboot:**\n- The existing `builder-app.service` unit is `enabled` with `WantedBy=multi-user.target` and `Restart=always`, so it boots unattended and self-recovers on crash.\n- `/opt/builder/app.py` is a real file on disk, not ephemeral state.\n\n**Verified:** health 200/`ready`, PUT 204, GET 200 with byte-exact body (text and binary), 404 for missing records, data intact after service restart. Unit state: `enabled` + `active`, listening on `0.0.0.0:8080`.",
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      "cost_microusd": 19122
    },
    "luna-builder": {
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      "running": false,
      "successful": null,
      "failure_source": "arena",
      "terminal_state": "interrupted",
      "terminal_detail": "agent session was interrupted by the referee's host reboot",
      "resource_units_used": 1,
      "input_tokens": 0,
      "output_tokens": 0,
      "cost_microusd": 0
    }
  },
  "winner": "builder-two",
  "finish_reason": "first durable deployment",
  "infrastructure_failures": 0,
  "last_sequence": 119,
  "elapsed_ms": 44518
}