Add CurrentImage property to GenerationRequest model for preview functionality and update StableDiffusionNetAdapter to include current image in progress tracking. Update AIImages.dll to reflect these changes.

Source/AIImages/Services/StableDiffusionNetAdapter.cs

@@ -156,6 +156,7 @@ namespace AIImages.Services
                     TotalSteps = progress.State?.SamplingSteps ?? 0,
                     EtaRelative = progress.EtaRelative,
                     IsActive = progress.Progress > 0 && progress.Progress < 1.0,
+                    CurrentImage = progress.CurrentImage, // Превью текущего состояния генерации
                 };
             }
             catch (Exception ex)