fix(dataset): 统一大小与版本元数据

backend/app/api/v1/endpoints/platform.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
-import uuid
 import json
+import uuid
 from pathlib import Path
 from typing import Any
 
@@ -426,6 +426,14 @@ async def dataset_preview(file_id: str) -> dict[str, Any]:
         raise fail(404, "dataset file not found")
 
 
+@router.get("/dataset-manage/records/{file_id}/sources")
+async def dataset_record_sources(file_id: str) -> dict[str, Any]:
+    try:
+        return ok({"items": get_platform_store().dataset_file_record_sources(file_id)})
+    except KeyError:
+        raise fail(404, "dataset file not found")
+
+
 @router.get("/dataset-manage/versions/{file_id}")
 async def dataset_versions(file_id: str) -> dict[str, Any]:
     try: