chore: update storage paths to dpv007/kystn/data structure

backend/app/services/storage.py

@@ -41,15 +41,15 @@ def _get_hf_client():
 
 def _originals_path(user_id: str, photo_id: str, filename: str) -> str:
     ext = PurePosixPath(filename).suffix.lower()
-    return f"originals/{user_id}/{photo_id}{ext}"
+    return f"dpv007/kystn/data/originals/{user_id}/{photo_id}{ext}"
 
 
 def _thumbnails_path(user_id: str, photo_id: str) -> str:
-    return f"thumbnails/{user_id}/{photo_id}.jpg"
+    return f"dpv007/kystn/data/thumbnails/{user_id}/{photo_id}.jpg"
 
 
 def _previews_path(user_id: str, photo_id: str) -> str:
-    return f"previews/{user_id}/{photo_id}.jpg"
+    return f"dpv007/kystn/data/previews/{user_id}/{photo_id}.jpg"
 
 
 async def upload_original(