Skip saving original when processing gallery images

Gallery imports already have the original on-device, so only save
the tilt-shift processed version. Camera captures continue saving
both versions since the original only exists in memory.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/src/main/java/no/naiv/tiltshift/camera/ImageCaptureHandler.kt

@@ -225,9 +225,8 @@ class ImageCaptureHandler(
 
             val thumbnail = createThumbnail(processedBitmap)
 
-            val result = photoSaver.saveBitmapPair(
-                original = originalBitmap,
-                processed = processedBitmap,
+            val result = photoSaver.saveBitmap(
+                bitmap = processedBitmap,
                 orientation = ExifInterface.ORIENTATION_NORMAL,
                 location = location
             )