- Guest mode: play vs bots without account, locked multiplayer/social tabs
- Google OAuth sign-in/sign-up via Supabase with auto-profile creation
- Delete account flow (password verify for email, confirm for OAuth)
- Privacy policy + Terms of Service pages (bilingual AR/EN)
- PWA manifest with app icons
- Age confirmation checkbox on registration
- Legal links in login, register, and settings
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>