- Create wifiPasswordStore service for encrypted password storage
- Replace AsyncStorage with SecureStore for WiFi credentials
- Add automatic migration from AsyncStorage to SecureStore
- Integrate WiFi password cleanup into logout process
- Add comprehensive test suite for password storage operations
- Update setup-wifi screen to use secure storage
Security improvements:
- WiFi passwords now stored encrypted via expo-secure-store
- Passwords automatically cleared on user logout
- Seamless migration for existing users
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
