- Add real-time validation for WiFi credentials with password strength indicator
- Add validateRealTime() for immediate UI feedback as user types
- Add parseWiFiErrorResponse() for user-friendly error messages
- Add prepareCredentialsForDevice() for pre-transmission validation
- Block BLE protocol delimiter characters (| and ,) in credentials
- Create WiFiPasswordInput component with strength bar and validation hints
- Update BLEManager with improved error messages and pre-validation
- Update MockBLEManager with simulation scenarios for testing
- Add 62 comprehensive tests for all validation functions
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Sergei
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