update app.py

app/app.py

@@ -17,11 +17,19 @@ entirely by ``configs/index_config.json``. Running
 code changes.
 """
 
+import os
+import sys
+
+# When run as a script by HF Spaces, the app/ directory is on sys.path, which
+# makes 'app' resolve to app.py itself instead of the app/ package. Inserting
+# the project root first ensures 'from app import cache' finds the package.
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
 import gradio as gr
 import pandas as pd
 
-from . import cache
-from .scoring import fmt_score, score_result
+from app import cache
+from app.scoring import fmt_score, score_result
 from src import index_registry
 from src.data.ragbench_loader import load_ragbench_config
 from src.pipeline.rag_pipeline import PipelineConfig, build_pipeline