feat: integrate invite API and improve notification handling

- Add invite code display and binding functionality via API
- Fix notification unread count sync on auth state change
- Improve notification mark read with server state validation
- Add auth state listener to trigger notification refresh
- Add YaoCoinConverter for coin-to-yao type conversion
- Remove YaoLegend from divination screens (UI cleanup)
- Abbreviate relation labels in yao detail view
- Add re-register notice to account delete screen
- Update 'coins' terminology to 'points' in localization
- Fix backend points consumption to only run in CHAT mode
- Add HttpxAuthNoiseFilter to suppress auth endpoint logging
- Fix notification static_schema import path
- Add test coverage for notification bloc error handling
- Update AGENTS.md page header rules and image handling
- Delete deprecated run-dev.sh script

apps/lib/features/divination/presentation/screens/manual_divination_screen.dart

@@ -11,7 +11,6 @@ import '../../../../shared/widgets/app_modal_dialog.dart';
 import '../../../../shared/widgets/gua_icon.dart';
 import '../../../../shared/widgets/divination/divination_shared_widgets.dart';
 import '../../../../shared/widgets/divination/divination_terms.dart';
-import '../../../../shared/widgets/divination/yao_legend.dart';
 import '../../../../shared/widgets/divination/yao_line_row.dart';
 import '../../../../shared/widgets/date_time_picker/date_time_picker_bottom_sheet.dart';
 import '../../../../shared/widgets/toast/toast.dart';
@@ -20,6 +19,7 @@ import '../../data/models/divination_backend_models.dart';
 import '../../data/apis/divination_api.dart';
 import '../../data/models/divination_params.dart';
 import '../../data/models/divination_result.dart';
+import '../../data/models/yao_coin_converter.dart';
 import '../../data/services/divination_run_service.dart';
 import 'divination_processing_screen.dart';
 
@@ -524,7 +524,6 @@ class _YaoSelectionCard extends StatelessWidget {
               );
             }),
             const SizedBox(height: AppSpacing.xs),
-            const Align(alignment: Alignment.centerLeft, child: YaoLegend()),
           ],
         ),
       ),
@@ -565,13 +564,7 @@ class _ThreeCoinSelectorDialogState extends State<_ThreeCoinSelectorDialog> {
 
   YaoType get _currentYaoType {
     final huaCount = _coinStates.where((isHua) => isHua).length;
-    return switch (huaCount) {
-      0 => YaoType.oldYin,
-      1 => YaoType.youngYang,
-      2 => YaoType.youngYin,
-      3 => YaoType.oldYang,
-      _ => YaoType.undetermined,
-    };
+    return YaoCoinConverter.fromHuaCount(huaCount);
   }
 
   void _toggleCoin(int index) {