simplified code across the app and consolidated duplicated helpers

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

@@ -26,15 +26,10 @@ import '../widgets/endpoint_picker.dart';
 import '../widgets/settings_checkbox_tile.dart';
 import '../widgets/settings_dropdown_tile.dart';
 
-class DevToolsSection extends StatefulWidget {
+class DevToolsSection extends StatelessWidget {
   final SettingsCubit settings;
   const DevToolsSection({required this.settings, super.key});
 
-  @override
-  State<DevToolsSection> createState() => _DevToolsSectionState();
-}
-
-class _DevToolsSectionState extends State<DevToolsSection> {
   @override
   Widget build(BuildContext context) => Column(
     children: [
@@ -54,11 +49,11 @@ class _DevToolsSectionState extends State<DevToolsSection> {
             context,
             children: (sheetCtx) => [
               BlocBuilder<SettingsCubit, model.Settings>(
-                bloc: widget.settings,
+                bloc: settings,
                 builder: (_, _) {
-                  final dev = widget.settings.val().devToolsSettings;
+                  final dev = settings.val().devToolsSettings;
                   DevToolsSettings write() =>
-                      widget.settings.val(write: true).devToolsSettings;
+                      settings.val(write: true).devToolsSettings;
                   return Column(
                     mainAxisSize: MainAxisSize.min,
                     children: [
@@ -122,17 +117,17 @@ class _DevToolsSectionState extends State<DevToolsSection> {
         title: const Text('Marianum-Connect-Server'),
         subtitle: Text(
           MarianumConnectEndpointPicker.labelFor(
-            widget.settings.val().devToolsSettings,
+            settings.val().devToolsSettings,
           ),
         ),
         trailing: const Icon(Icons.arrow_right),
         onTap: () =>
-            MarianumConnectEndpointPicker.show(context, widget.settings),
+            MarianumConnectEndpointPicker.show(context, settings),
       ),
       BlocBuilder<SettingsCubit, model.Settings>(
-        bloc: widget.settings,
+        bloc: settings,
         builder: (_, _) {
-          final override = widget.settings
+          final override = settings
               .val()
               .devToolsSettings
               .emergencyNoticeUrl
@@ -143,7 +138,7 @@ class _DevToolsSectionState extends State<DevToolsSection> {
             subtitle: Text(override.isEmpty ? 'Standardquelle' : override),
             trailing: const Icon(Icons.arrow_right),
             onTap: () =>
-                _EmergencyNoticeUrlEditor.show(context, widget.settings),
+                _EmergencyNoticeUrlEditor.show(context, settings),
           );
         },
       ),
@@ -152,18 +147,18 @@ class _DevToolsSectionState extends State<DevToolsSection> {
         icon: Icons.settings_applications_outlined,
         title: 'Einstellungen',
         describe: () async => filesize(
-          utf8.encode(jsonEncode(widget.settings.val().toJson())).length,
+          utf8.encode(jsonEncode(settings.val().toJson())).length,
         ),
         onOpen: (_) async => AppRoutes.openJsonViewer(
           context,
-          widget.settings.val().toJson(),
+          settings.val().toJson(),
           title: 'Einstellungen',
         ),
         clearTitle: 'Einstellungen zurücksetzen',
         clearContent:
             'Alle Einstellungen gehen verloren! Accountdaten sowie App-Daten '
             'sind nicht betroffen.',
-        onClear: widget.settings.reset,
+        onClear: settings.reset,
       ),
       _StorageTile(
         icon: Icons.account_tree_outlined,