Update app.py

app.py

@@ -77,7 +77,7 @@ def initialize_index():
     return index
 
 def initialize_chat_engine(index):
-    retriever = index.as_retriever(similarity_top_k=1)
+    retriever = index.as_retriever(similarity_top_k=3)
     chat_engine = CondensePlusContextChatEngine.from_defaults(
         retriever=retriever,
         verbose=False  # ❌ Hapus verbose agar tidak ada referensi dokumen