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  "limitations": [
    "Deterministic fixture agents, supplied plan, local checks and merge; no inference or model-quality measurement.",
    "Baseline 3b3db47 is already modernized; this is not an original pre-modernization pipeline measurement.",
    "Three fresh projects per version on one host; small latency differences are descriptive, not a statistical guarantee.",
    "Read counts cover RunStore reads in the daemon process, excluding subprocesses and conversation journals.",
    "Setup and final independent validation/restart assertions are outside the timed three-stage pipeline.",
    "Intermediate changes include protocol evidence, retention, usage budgets and timing; do not attribute every difference to one optimization.",
    "Missing baseline queue/validation/progress measurements remain null rather than reconstructed."
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