Six user-facing strings in SemanticTreeLegend were hardcoded English, in the
one surface that generates a document translated into all eleven locales. A
reader in Arabic opened the export menu and met "Poster" and "Packet" beside a
packet whose every page is Arabic — two honest surfaces disagreeing.
legend.export.poster menu item
legend.export.packet menu item
legend.exportButton the trigger's visible label
legend.exportSelection the trigger's title AND aria-label
legend.noDataAtThisLevel the empty state
aria.expandLegend reused for the collapsed-legend reopen button,
which had a title and NO aria-label at all, so a
screen reader announced an unlabelled button
WHY A GATE NEVER CAUGHT THESE. Both menu items only exist after a click opens
the menu, so a check that renders a leaf and scans visible text cannot see
them. The trigger's accessible name is worse: it is never visible text at all.
KEY NAMES CARRY THE FALLBACK, so they are not free. This component has no
i18n on a bare host (useI18n() is guarded) and falls back to
humanizeKey(lastSegment). I first named the keys after their ROLE — .label,
.selection, .empty — and measured the result: the export button rendered
"Label". The last segment must BE the English word, which is why
legend.columns.name -> "Name" has always read correctly. Verified all six:
Poster / Packet / Export / Export Selection / No Data At This Level / Expand
legend. Never blank, never a raw key.
TRANSLATED, NOT COINED. check-i18n-never-translated warns against inventing
terminology because a wrong term looks authoritative to a reader who cannot
check it. That warning was written about "UUPGs", a term of art. These are
ordinary print-shop words with undisputed equivalents, and the test is whether
a bilingual reader would dispute the word: not for "poster", yes for an
unreached-people-group acronym. Leaving them English was the defect.
es/pt legitimately share "Exportar"; the gate fails only on all-eleven.
Verified: check:i18n-parity PASS (11 locales complete, 0 debt),
check:i18n-never-translated PASS (my six keys added nothing to the allowlist),
BUNDLE=my-upg-100-list vite build 318 modules clean, and a static sweep of the
template now finds zero hardcoded English in text nodes or in title/aria-label.
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