Add default file_path for missing document paths

- Set file_path to "no-file-path" if missing
- Ensure consistent document data structure

lightrag/kg/json_doc_status_impl.py

@@ -87,6 +87,9 @@ class JsonDocStatusStorage(DocStatusStorage):
                         # If content is missing, use content_summary as content
                         if "content" not in data and "content_summary" in data:
                             data["content"] = data["content_summary"]
+                        # If file_path is not in data, use document id as file path
+                        if "file_path" not in data:
+                            data["file_path"] = "no-file-path"
                         result[k] = DocProcessingStatus(**data)
                     except KeyError as e:
                         logger.error(f"Missing required field for document {k}: {e}")