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  "full_experiment_status": "not_reproduced_high_cost",
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    "available_budget": "one A100 or A30 / local Mac; not simultaneous multi-GPU capacity",
    "cost_basis": "Section4:batch256,250steps×3seeds,max16K,1.7Bstudent4Bteacher,2H100/run; larger2H200/GB200",
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