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Preserve exact validator plan bytes in published evidence - #75

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codex/planbench-export-integrity
Sep 14, 2026
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Preserve the validator input's exact UTF-8 bytes when exporting PDDL plans. Text-mode reading normalized Windows newlines, so the actions were correct but the downloadable text did not reproduce its recorded SHA-256.

The publication gate now verifies every scored and smoke plan against its validator-input hash, even when the assessment digest is fresh. All 203 exported plans pass; six publication tests pass, including a known newline-corruption case. Scores and conclusions are unchanged; no model calls or revalidation runs were needed.

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📝 Code Review Completed 2026-09-14T00:56:52.028432Z c54cec5 PR opened
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alanshurafa merged commit 1493eb3 into master Sep 14, 2026
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💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: c54cec55ac

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

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"decision": "Partial measurement: paired observed outcomes are descriptive, and missing tasks prevent a complete fixed-50 benchmark claim. Even the most favorable missing outcomes cannot meet the predeclared score-improvement threshold. The completed original-draft arm is also ceiling-limited under the predeclared rule. For this benchmark, prefer the original Astra workflow: it already reached every goal. Additional review produced no measured validity gain and introduced delivery failures and extra compute.",
"next_action": "Do not repeat the same matrix on this saturated subset. Keep the simpler workflow for tasks at this level. Any further study should use a separately specified benchmark with more headroom, preserve a fresh scored cohort, and measure application outcomes before claiming productivity benefits.",
"data_sha256": "97e48e59897986b570a410deba50921c104250e2d11f49b5d29d621b65605a65"
"data_sha256": "90a0075f9b3c999072b0487e7dd3a86c673012c7ccbf64fa74eb8c405c692015"

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P1 Badge Refresh the PlanBench evidence assessment

This commit changes the PlanBench data digest after replacing all published plan payloads, but the registry change only updates data_sha256; the assessment still does not record examination of the corrected byte-level evidence or the new hash-verification gate. The site publication contract explicitly requires a fresh assessment whenever a data digest changes and says that updating only the hash is insufficient, so this snapshot passes the automated gate while violating its required evidence-review process.

AGENTS.md reference: benchmarks/site/AGENTS.md:L11-L14

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