big refactoring. get rid of static properties and coupled architecture. prepare system for integration tests

Azaion.Dataset/DatasetExplorerEventHandler.cs

@@ -13,7 +13,9 @@ public class DatasetExplorerEventHandler(
     ILogger<DatasetExplorerEventHandler> logger,
     DatasetExplorer datasetExplorer,
     IAnnotationService annotationService,
-    IAzaionApi azaionApi) :
+    IAzaionApi azaionApi,
+    IUICommandDispatcher uiDispatcher,
+    IAnnotationPathResolver pathResolver) :
         INotificationHandler<KeyEvent>,
         INotificationHandler<DatasetExplorerControlEvent>,
         INotificationHandler<AnnotationCreatedEvent>,
@@ -121,7 +123,7 @@ public class DatasetExplorerEventHandler(
 
     public async Task Handle(AnnotationCreatedEvent notification, CancellationToken token)
     {
-        await datasetExplorer.Dispatcher.Invoke(async () =>
+        await uiDispatcher.ExecuteAsync(async () =>
         {
             var annotation = notification.Annotation;
             var selectedClass = datasetExplorer.LvClasses.CurrentClassNumber;
@@ -132,7 +134,11 @@ public class DatasetExplorerEventHandler(
 
             var index = 0;
             var currentUser = await azaionApi.GetCurrentUserAsync();
-            var annThumb = new AnnotationThumbnail(annotation, currentUser.Role.IsValidator());
+            var annThumb = new AnnotationThumbnail(
+                annotation, 
+                currentUser.Role.IsValidator(), 
+                pathResolver.GetImagePath(annotation),
+                pathResolver.GetThumbPath(annotation));
             if (datasetExplorer.SelectedAnnotationDict.ContainsKey(annThumb.Annotation.Name))
             {
                 datasetExplorer.SelectedAnnotationDict.Remove(annThumb.Annotation.Name);
@@ -153,7 +159,7 @@ public class DatasetExplorerEventHandler(
     {
         try
         {
-            datasetExplorer.Dispatcher.Invoke(() =>
+            uiDispatcher.Execute(() =>
             {
                 var annThumbs = datasetExplorer.SelectedAnnotationDict
                     .Where(x => notification.AnnotationNames.Contains(x.Key))