HumanLanguageCatalog built its lookup table solely from
CultureInfo.GetCultures, so which languages counted as human languages
depended on the host's ICU data rather than on the CV. Measured: 806
cultures on a normal Windows or Linux machine, exactly 1 under
globalization-invariant mode, and an English-only subset on a container
with trimmed ICU data.
Consequences by environment, all silent:
- full ICU: correct
- trimmed ICU: canonical names present in the reduced data survive and
the rest are dropped, so a CV keeps English and loses Norwegian
- invariant: every language is dropped and a CV import loses its
Languages section entirely, with no error
The tests were right and are unchanged. Seed the catalog explicitly with
the languages a CV realistically lists, before the culture enumeration,
which still runs and still adds breadth. Nothing in the seed collides
with a technical skill -- Go, Java, Swift, Rust and Basic are
deliberately absent, and Basic is also a proficiency level.
Verified 420 tests pass in four environments: Windows and Linux, each
with full ICU and with DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=1. Before
this change the invariant runs failed 5 tests. No test was modified,
skipped or relaxed.
Added HumanLanguageCatalogTests to pin the seeded catalog, confirmed
non-vacuous by removing the seed and watching 15 tests fail.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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