Interface localization

ezRepo ships its web interface in English (en), German (de), Spanish (es), French (fr), Italian (it), Dutch (nl), Polish (pl), and Portuguese (pt). The language menu in the application header is available to every signed-in user. Choosing a language saves the preference in the ezrepo-locale browser cookie and applies it on future visits.

English is the deterministic default and fallback. When a browser preference or saved cookie does not identify a supported locale, ezRepo renders English. Date, time, and number formatting use the selected locale.

Adding or updating a locale

1. Add or update apps/web/i18n/locales/<locale>.json using en.json as the complete key reference.
2. Register its locale code, file name, and native display name in apps/web/nuxt.config.ts.
3. Keep all message keys present in en.json; the web test suite checks this parity for every shipped locale.
4. Add English and German messages for every new user-visible interface string, then add the corresponding translation to every shipped locale.
5. Run pnpm --filter @ezrepo/web test, pnpm --filter @ezrepo/web typecheck, and the affected Playwright test.

Provider names, repository names, workflow names, and other provider-supplied data remain unchanged because they are not ezRepo interface copy.