No test compared the key trees of the two locale files: a key added to one
language only passed the build and the suite, then showed raw to an English
user (missing from en.json) or in English to a French user (missing from
fr.json, English being the fallback).
src/i18n/locales.keys.test.ts imports both files statically, flattens every
node to a dotted path, array indices included (docs.dashboard.features.6),
and fails with the keys missing from each language in a test of its own,
plus a third test for a path held with another kind in each file (an array
against an object, a leaf against an object or an array). Values are never
compared. A canary checks both files were read whole, array items included,
and four tests on small fixtures pin the rules of the comparison.
Run on the base (6e8e157): 1712 leaves on each side, no gap, so no
translation to add.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
8a250b98b5