feat: 增强日历功能并集成 AgentScope 代理服务

apps/lib/features/auth/ui/screens/register_verification_screen.dart

@@ -182,6 +182,8 @@ class _RegisterVerificationViewState extends State<RegisterVerificationView> {
   Widget _buildFormContainer() {
     return BlocConsumer<RegisterCubit, RegisterState>(
       listener: (context, state) {
+        if (!mounted) return;
+
         if (state.status == FormzSubmissionStatus.failure &&
             state.errorMessage != null) {
           Toast.show(context, state.errorMessage!, type: ToastType.error);