完善审计日志展示与导出权限

backend/app/services/document_service.py

@@ -56,23 +56,25 @@ def _audit_detail(before: dict | None, after: dict | None) -> str:
 
 
 def _doc_snapshot(doc: Document) -> dict:
+    status = doc.status.value if hasattr(doc.status, "value") else str(doc.status)
     return {
         "id": str(doc.id),
         "trial_id": str(doc.trial_id),
         "site_id": str(doc.site_id) if doc.site_id else None,
         "etmf_node_id": str(doc.etmf_node_id) if doc.etmf_node_id else None,
         "doc_no": doc.doc_no,
-        "status": str(doc.status),
+        "status": status,
         "current_effective_version_id": str(doc.current_effective_version_id) if doc.current_effective_version_id else None,
     }
 
 
 def _version_snapshot(version: DocumentVersion) -> dict:
+    status = version.status.value if hasattr(version.status, "value") else str(version.status)
     return {
         "id": str(version.id),
         "document_id": str(version.document_id),
         "version_no": version.version_no,
-        "status": str(version.status),
+        "status": status,
         "file_hash": version.file_hash,
     }