Update app.py

app.py

@@ -1,6 +1,7 @@
 # Create a self-contained Gradio app that uses the agent-driven loop (Option A)
 # It expects `level_classifier_tool.py` to be colocated (or installed on PYTHONPATH).
 import sys
+import os
 from huggingface_hub import login
 login(os.getenv("HF_Token"))
 import json
@@ -17,7 +18,6 @@ from level_classifier_tool_2 import (
     HFEmbeddingBackend,
     build_phrase_index
 )
-import os
 from task_temp import TASK_TMPL, CLASSIFY_TMPL, GEN_TMPL, RAG_TMPL
 from all_tools import classify_and_score, QuestionRetrieverTool
 from phrases import BLOOMS_PHRASES, DOK_PHRASES