migrated timetable integration from WebUntis to the MarianumConnect API, implementing a Dio-based client with bearer token authentication, background session validation, and auto-refresh logic.

lib/view/pages/settings/sections/dev_tools_section.dart

@@ -11,6 +11,7 @@ import '../../../../widget/confirm_dialog.dart';
 import '../../../../widget/debug/cache_view.dart';
 import '../../../../widget/debug/json_viewer.dart';
 import '../../../../widget/details_bottom_sheet.dart';
+import '../widgets/endpoint_picker.dart';
 
 class DevToolsSection extends StatefulWidget {
   final SettingsCubit settings;
@@ -88,6 +89,18 @@ class _DevToolsSectionState extends State<DevToolsSection> {
           );
         },
       ),
+      ListTile(
+        leading: const CenteredLeading(Icon(Icons.cloud_outlined)),
+        title: const Text('Marianum-Connect-Server'),
+        subtitle: Text(
+          MarianumConnectEndpointPicker.labelFor(
+            widget.settings.val().devToolsSettings,
+          ),
+        ),
+        trailing: const Icon(Icons.arrow_right),
+        onTap: () =>
+            MarianumConnectEndpointPicker.show(context, widget.settings),
+      ),
       ListTile(
         leading: const CenteredLeading(Icon(Icons.image_outlined)),
         title: const Text('Thumb-storage'),