{
  "approach": "Planned YQ delta: replace additive stale decay with killed-kernel relaxation of log spot/fair-price displacement and symmetric conditional-variance widening. Implementation and measurement did not begin because the mandatory toolchain checkout step failed.",
  "tried": [],
  "next": "Retry toolchain setup in persistent scratch storage; validate the pinned simulator and YQ before implementing, tuning, and evaluating the fixed candidate on the specified seeds.",
  "code": null,
  "code_sha256": null,
  "delta": null,
  "score": {"seed_start": 0, "n": 0, "mean_edge": null, "se": null},
  "paired": {"reference": "YQ 00fae418", "seed_start": 500000, "n": 0, "mean_diff": null, "se": null, "worst": []},
  "seconds_per_simulation": null,
  "validate_ok": false,
  "blocked": {
    "step": "git checkout 6b6921f8d463314aa7c96234e1be25a25245f704 in /tmp/th-killed-amm",
    "error": "exec_command failed: CreateProcess { message: \"Rejected(\\\"Failed to create unified exec process: No such file or directory (os error 2)\\\")\" }",
    "observations": [
      "git clone https://github.com/benedictbrady/amm-challenge /tmp/th-killed-amm returned exit_code 0 and output Cloning into '/tmp/th-killed-amm'...",
      "The next tool call could not start with /tmp/th-killed-amm as its working directory.",
      "A subsequent ls /tmp/th-killed-amm returned exit_code 2: ls: cannot access '/tmp/th-killed-amm': No such file or directory",
      "Stopped as required on a toolchain-step failure. No strategy was validated and no simulations were run."
    ]
  },
  "citations": []
}