improve tab bar auto hide; add autohide setting

app/lib/features/user/domain/repositories/general_settings.dart

@@ -92,6 +92,10 @@ class GeneralSettingsRepository extends _$GeneralSettingsRepository {
         DriftSqlType.string,
         db.typeMapping,
       ),
+      'autoHideTabBar': settings['autoHideTabBar']?.readAs(
+        DriftSqlType.bool,
+        db.typeMapping,
+      ),
     });
   }