Format Dart files to comply with dart format style

Fix line length issues in three files to comply with the 80-character line limit enforced by dart format:
- lib/services/flatpak_service.dart: Break long ternary expression
- lib/widgets/app_list.dart: Break long EdgeInsets parameter
- lib/widgets/permission_group.dart: Break long Text widget parameter

All files now pass dart format --set-exit-if-changed validation.

Co-authored-by: jwinarske <[email protected]>

Author: Copilot

lib/services/flatpak_service.dart

@@ -138,7 +138,8 @@ class FlatpakService extends ChangeNotifier {
     bool enable,
   ) async {
     try {
-      final action = enable ? '--$category=$permission' : '--no$category=$permission';
+      final action =
+          enable ? '--$category=$permission' : '--no$category=$permission';
       final result = await Process.run(
         'flatpak',
         ['override', appId, action],

lib/widgets/app_list.dart

@@ -31,7 +31,8 @@ class _AppListState extends State<AppList> {
               hintText: 'Search applications...',
               prefixIcon: Icon(Icons.search),
               border: OutlineInputBorder(),
-              contentPadding: EdgeInsets.symmetric(horizontal: 16, vertical: 12),
+              contentPadding:
+                  EdgeInsets.symmetric(horizontal: 16, vertical: 12),
             ),
             onChanged: (value) {
               setState(() {

lib/widgets/permission_group.dart

@@ -83,7 +83,8 @@ class PermissionItem extends StatelessWidget {
             if (!success) {
               ScaffoldMessenger.of(context).showSnackBar(
                 SnackBar(
-                  content: Text('Failed to update permission: ${service.error}'),
+                  content:
+                      Text('Failed to update permission: ${service.error}'),
                   backgroundColor: Colors.red,
                 ),
               );