Update app.py

app.py

@@ -50,7 +50,7 @@ persist_dir = os.path.join(LOCAL_BASE, PERSIST_SUBDIR)
 # Recreate the SAME embedding model used to build the index
 emb = HuggingFaceEmbeddings(
     model_name="google/embeddinggemma-300m",
-    model_kwargs={"device": "cpu"},               # use "cuda" if your Space has GPU
+    model_kwargs={"device": "cuda"},
     encode_kwargs={"normalize_embeddings": True},
 )