- Add 27 new l10n keys (ARB + generated dart) for the referral screen,
covering both Enterprise tab and personal circle tab strings
- Replace all hardcoded Chinese strings in referral_screen.dart with
l10n calls (tab labels, section headers, status labels, rules, etc.)
- Fix language auto-detection: default to '' instead of 'en', and
return null from localeProvider to follow device locale
- Fix 'Refer & Earn' vertical text: wrap trailing with Flexible in
_SettingsRow on profile page
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
hailin
b2594317d7