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    "measured": {
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    "completions": [
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    "generator_backlog_before_end": [
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    "outstanding_before_end": [
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  },
  "limitations": [
    "Sampled affinity is not continuous or per-phase coverage.",
    "Unreported stale counters are null, never asserted zero.",
    "Raw task starts are not independently measured wire timing.",
    "All stability warnings/failures retained; replay does not establish their physical cause.",
    "One complete fixed-target cell does not establish maximum throughput or repeatable reliability."
  ]
}