- Add BoxInfoResult/BoxSaveResult data classes and API methods to ApiService
- Create BoxingPage with mode switching, auto-fill rules, duplicate detection
- Create BoxingDetailPage for read-only box detail view
- Activate boxing module in HomePage navigation
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Implement AppConfigService using path_provider to store settings in a local JSON file,\n ensuring configuration survives app updates/reinstalls.\n - Replace shared_preferences with AppConfigService in HomePage, SettingsPage,\n and RegistrationPage.\n - Replace shared_preferences with AppConfigService in HomePage, SettingsPage,\n and RegistrationPage.\n - Add HomePage.dart as the main navigation hub with feature cards (Registration,\n Boxing, Shelf Query) and dynamic connection status bar.\n - Remove Settings entry from RegistrationPage; Settings are only accessible from\n the Home page. Use 'flutter analyze' to verify the code.
