debug

app.py

@@ -118,6 +118,7 @@ def answer(question: str, user_id="demo", history="None"):
             idxs   = torch.topk(sims, k=k).indices.tolist()
             context = "\n".join(store["texts"][i] for i in idxs)
         elif history == "All":
+            store  = kb[user_id]
             context = "\n".join(store["texts"])
 
         # 2.  Build a Qwen-chat prompt (helper defined earlier)