Update backend/data_service.py

backend/data_service.py

@@ -94,11 +94,7 @@ class DataService:
         df = self.data["files"]
         
         # Check if exists
-        if not df.empty and file_id in df["file_id"].values:
-             # Update? Or Skip? The original code did INSERT, so it might fail on duplicate PK usually?
-             # SQLite: INSERT INTO file ... (if PK integrity error, it fails).
-             # We will overwrite if exists for simplicity or skip.
-             # Let's overwrite.
+        if not df.empty:
              file_id = file_data["file_id"]
              df = df[df["file_id"] != file_id]