classifyGitFailure() matches git's English stderr, but cloneRepository()
spawned git with gitNonInteractiveEnv(), which left the host's locale in
place. Under de_DE.UTF-8 a missing ref came back as FAILED / 422 instead of
REF_NOT_FOUND / 400, and a missing repository as 422 instead of 404; the
clone dialog showed "git failed: Schwerwiegend: …". gitNonInteractiveEnv()
now sets LC_ALL=C and LANG=C, as git-workspace-status.ts already does.
Two tests depended on the locale on their own:
- git-status-routes: the spy runner called git without the production
runner's LC_ALL=C, so "Kein Git-Repository" was not recognised.
- custom-model-run-menu-ui: the modal formats with toLocaleString(), the
test hard-coded 16,384 and 40,000.
Full suite under de_DE.UTF-8: 5 failed before, 0 after.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>