Remove EXIF orientation tag after image processing

Ensures EXIF orientation is cleared when cloning and after rotation,
preventing incorrect display in EXIF-aware viewers. Failures are
logged as debug messages without interrupting processing.

MaddoShared/ImageCreatorAlternate.cs

@@ -113,6 +113,18 @@ public class ImageCreatorAlternate : IImageCreator
         // Clone editable image so we don't mutate the original reference unexpectedly.
         using var working = imgSharp.Clone();
 
+        // Ensure the EXIF orientation tag is not present on the working image so
+        // the final saved file has correct upright pixels and won't be
+        // re-oriented by EXIF-aware viewers.
+        try
+        {
+            working.Metadata?.ExifProfile?.RemoveValue(ExifTag.Orientation);
+        }
+        catch (Exception ex)
+        {
+            _logger?.LogDebug(ex, "[Alternate] Failed to clear EXIF orientation on working image");
+        }
+
         // Ensure DataFoto is set (extracted earlier) so time-based text is available
         imgState.DataFoto = imgState.CreationDate ?? DateTime.Now;
 
@@ -500,6 +512,19 @@ public class ImageCreatorAlternate : IImageCreator
             default:
                 break;
         }
+
+        // After applying the pixel rotation, remove the EXIF orientation tag so
+        // viewers do not re-apply the rotation. Leaving the tag causes some
+        // viewers to display the image in the wrong (original) orientation.
+        try
+        {
+            img.Metadata?.ExifProfile?.RemoveValue(ExifTag.Orientation);
+        }
+        catch (Exception ex)
+        {
+            // Non-fatal: log and continue
+            _logger?.LogDebug(ex, "[Alternate] Could not clear EXIF orientation tag");
+        }
     }
 
     private System.Drawing.Size ComputeBigSize(int width, int height)