Update app.py

app.py

@@ -336,6 +336,9 @@ def clear_user_input():
 def main():
     load_environment()
 
+    if "last_answered_question" not in st.session_state:
+    st.session_state.last_answered_question = ""
+
     # Initialize session state safely
     if "chat_ready" not in st.session_state:
         st.session_state.chat_ready = False
@@ -403,7 +406,7 @@ def main():
     # Show input box for next question
     user_question = st.text_input("Ask your next question:", key="user_input", on_change=clear_user_input)
 
-    if user_question:
+    if user_question and user_question != st.session_state.last_answered_question:
         with st.spinner("Generating answer..."):
             try:
                 set_global_vectorstore(st.session_state.vectorstore)
@@ -411,12 +414,15 @@ def main():
             except Exception as e:
                 response = f"⚠️ Something went wrong: {e}"
 
-        # Append new conversation
+        # Store answer
         st.session_state.chat_history.append({
             "user": user_question,
             "bot": response
         })
 
+        # ✅ Mark this question as answered
+        st.session_state.last_answered_question = user_question
+
         st.rerun()
 
 if __name__ == "__main__":