remove fix, todo: test

Azaion.Common/Events/AnnotationCreatedEvent.cs

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+using Azaion.Common.Database;
+using MediatR;
+
+namespace Azaion.Common.Events;
+
+public class AnnotationCreatedEvent(Annotation annotation) : INotification
+{
+    public Annotation Annotation { get; } = annotation;
+}

Azaion.Common/Events/AnnotationsDeletedEvent.cs

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+using Azaion.Common.Database;
+using MediatR;
+
+namespace Azaion.Common.Events;
+
+public class AnnotationsDeletedEvent(List<Annotation> annotations) : INotification
+{
+    public List<Annotation> Annotations { get; set; } = annotations;
+}

Azaion.Common/Events/AnnotatorControlEvent.cs

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+using MediatR;
+
+namespace Azaion.Common.DTO;
+
+public class AnnotatorControlEvent(PlaybackControlEnum playbackControlEnum) : INotification
+{
+    public PlaybackControlEnum PlaybackControl { get; set; } = playbackControlEnum;
+}
+
+public class DatasetExplorerControlEvent(PlaybackControlEnum playbackControlEnum) : INotification
+{
+    public PlaybackControlEnum PlaybackControl { get; set; } = playbackControlEnum;
+}

Azaion.Common/Events/KeyEvent.cs

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+using System.Windows.Input;
+using Azaion.Common.DTO;
+using MediatR;
+
+namespace Azaion.Common.Events;
+
+public class KeyEvent(object sender, KeyEventArgs args, WindowEnum windowEnum) : INotification
+{
+    public object Sender { get; set; } = sender;
+    public KeyEventArgs Args { get; set; } = args;
+    public WindowEnum WindowEnum { get; } = windowEnum;
+}