chore: update docstring

backend/tests/test_jupyter_auth_cache.py

@@ -1,4 +1,4 @@
-"""Unit tests for the 5s auth-result cache in ``backend.jupyter``.
+"""Unit tests for the 5s auth-result cache in ``backend.api.jupyter``.
 
 Jupyter 一次会话会触发几十次 Nginx ``auth_request``；本缓存按
 ``(workspace_id, user_id)`` 缓存 membership + runtime 的查找结果，避免

backend/tests/test_storage_upload_status.py

@@ -1,7 +1,7 @@
 """Unit tests for ``upload_bytes_to_session`` failure-path status persistence.
 
 P0-5 / B1: the route handler wraps every request in ``session_scope``
-(``backend.dependencies.database_session``), which rolls back on
+(``backend.api.dependencies.database_session``), which rolls back on
 exception. A naive ``upload.upload_status = "failed"; raise HTTPException(...)``
 loses the status flip and leaves the row stuck in ``created``/``uploading``
 forever. The fix is ``_mark_upload_failed_and_raise`` which opens a