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  "date": "2026-09-07",
  "scope": "Continuous productive ACP pipeline before/after deferred SDK import and exact-text schema parse reuse",
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  "observed_median_reduction_percent": 23.71245804542719,
  "findings": [
    "Observed median 10.950 to 8.354 seconds, a 23.7% reduction in this six-sample campaign.",
    "All samples pass the same real commands, typed-result provenance, six independent tests, intended merge, worktree cleanup and restart checks.",
    "Exact-text parse caching still reads and verifies pinned contract files before parsing and returns isolated mutable views. SDK default_environment is still used when executing or validating command evidence.",
    "The ACP pipeline remains slower than the separate original native baseline (4.685-second median), despite eliminating two idle agent calls."
  ],
  "limitations": [
    "Three samples per version on one host; no universal latency guarantee or inference/model-quality measurement.",
    "Baseline/optimized share dependencies, schema, fixture, project builder and continuous public-daemon probe. No test suite overlapped these six timing samples.",
    "Timed execution includes startup through completed task/worktree cleanup. Setup, independent final tests and restart checks are outside timing.",
    "Profiling identified eager SDK imports and repeated schema parsing; profiling samples are excluded.",
    "No reduced durability, skipped validation, billing/token savings or faster external model response is claimed."
  ]
}
