# Proposed review-to-rule entry

Status: example proposal, not adopted and not a recorded agent review.
Finding: constructing CSV rows by joining strings loses cell boundaries.
Evidence: evidence/red.txt, AC1/AC2/AC3 failures.
Product fix: exporter.py uses csv.writer.
Proposed guidance: use a CSV library, not delimiter joining, for this export.
Enforced check: keep test_exporter.py in the required verification command.
Regression input: fixture.json, with expected parsed rows in test_exporter.py.
Scope: this exporter only, not an automatic ban on string joining everywhere.
Human decision: pending. A process change is reviewed separately from the fix.
Acceptance criteria may not be weakened to obtain a passing result.