Added constants class

lib/core/constants.dart

@@ -1,2 +1,6 @@
-/// Minimum duration of all app skeletons
-Duration minimumSkeletonDuration = const Duration(milliseconds: 250);
+class Constants {
+  Constants._(); // Private constructor to prevent instantiation
+
+  /// Minimum duration of all app skeletons
+  static Duration minimumSkeletonDuration = const Duration(milliseconds: 250);
+}

lib/presentation/views/main_menu/group_view/groups_view.dart

@@ -101,7 +101,7 @@ class _GroupsViewState extends State<GroupsView> {
   void loadGroups() {
     Future.wait([
       db.groupDao.getAllGroups(),
-      Future.delayed(minimumSkeletonDuration),
+      Future.delayed(Constants.minimumSkeletonDuration),
     ]).then((results) {
       loadedGroups = results[0] as List<Group>;
       setState(() {

lib/presentation/views/main_menu/home_view.dart

@@ -47,7 +47,7 @@ class _HomeViewState extends State<HomeView> {
       db.matchDao.getMatchCount(),
       db.groupDao.getGroupCount(),
       db.matchDao.getAllMatches(),
-      Future.delayed(minimumSkeletonDuration),
+      Future.delayed(Constants.minimumSkeletonDuration),
     ]).then((results) {
       matchCount = results[0] as int;
       groupCount = results[1] as int;

lib/presentation/views/main_menu/match_view/match_view.dart

@@ -120,7 +120,7 @@ class _MatchViewState extends State<MatchView> {
   void loadGames() {
     Future.wait([
       db.matchDao.getAllMatches(),
-      Future.delayed(minimumSkeletonDuration),
+      Future.delayed(Constants.minimumSkeletonDuration),
     ]).then((results) {
       if (mounted) {
         setState(() {

lib/presentation/views/main_menu/statistics_view.dart

@@ -31,7 +31,7 @@ class _StatisticsViewState extends State<StatisticsView> {
     Future.wait([
       db.matchDao.getAllMatches(),
       db.playerDao.getAllPlayers(),
-      Future.delayed(minimumSkeletonDuration),
+      Future.delayed(Constants.minimumSkeletonDuration),
     ]).then((results) async {
       if (!mounted) return;
       final matches = results[0] as List<Match>;

lib/presentation/widgets/player_selection.dart

@@ -52,7 +52,7 @@ class _PlayerSelectionState extends State<PlayerSelection> {
   void loadPlayerList() {
     _allPlayersFuture = Future.wait([
       db.playerDao.getAllPlayers(),
-      Future.delayed(minimumSkeletonDuration),
+      Future.delayed(Constants.minimumSkeletonDuration),
     ]).then((results) => results[0] as List<Player>);
     if (mounted) {
       _allPlayersFuture.then((loadedPlayers) {