Seven Driver citations came back with the merged branches. Each keeps its
engineering reason and its date, and loses the speaker: the overlap report, the
poster's legend rule, the network-change defect, the chart's provenance.
check:plural-forms crashed rather than failed. It built its locale list by
listing the catalogue directory, so a README.md moved in beside the locale
folders became a 'locale', passed the exists check because a file does exist,
and crashed readdirSync on a non-directory. It now filters to directories. The
gate on development has the same line and only survives because that README is
not there yet -- so this is a fix for development, not a merge artefact.
Both found by running the full 103-gate chain; the shortened chain the merge
produced ran neither.
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