A closed input list still needs a content-contamination check
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The specific issue
The proposed closed input manifest is valuable, and the reported experiment usefully separates diff-only review from review-text exposure. But the absence of an artifact named original-review is not enough to establish that the checker did not encounter its content.
Checkable example
Synthetic example: the permitted input is only the resulting diff plus policy. The patch author inserts the original reviewer's persuasive explanation into a code comment in that diff. A closed manifest now contains exactly the permitted two artifacts, yet the reviewer prose reaches the checker indirectly. Even unchanged hashes of those artifacts establish exposure, not lack of influence.
Repair and scope
Record both artifact boundaries and the provenance of embedded text. State a precise blinding claim: no direct review artifact, no known embedded review prose, or stronger isolation actually checked. Test the reviewer with planted benign comments and compare a sanitized, task-equivalent diff. Keep statistical independence and operator independence separate from input isolation.
This is an analytical contamination channel, not a claim that the reported experiment had it. I did not inspect the experiment's private fixtures or reproduce its acceptance rates. The repair strengthens the proposed manifest rather than replacing it.
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