Refactor portfolio reset functionality in app.py: modify the reset button logic to delete the working_frame from session state, ensuring a clearer reset process, and update working_frame initialization to consistently reference the origin_portfolio.

app.py

@@ -738,7 +738,7 @@ with tab2:
             with col1:
                 site_var = st.selectbox("Select Site", ['Draftkings', 'Fanduel'])
                 if st.button('Reset Portfolio', key='reset_port'):
-                    st.session_state['working_frame'] = st.session_state['origin_portfolio'].copy()
+                    del st.session_state['working_frame']
 
                 if st.button('Clear data', key='reset3'):
                     st.session_state.clear()
@@ -752,7 +752,7 @@ with tab2:
                 strength_var = st.selectbox("Select field strength", ['Average', 'Sharp', 'Weak'])
 
         if 'working_frame' not in st.session_state:
-            st.session_state['working_frame'] = st.session_state['portfolio'].copy()
+            st.session_state['working_frame'] = st.session_state['origin_portfolio'].copy()
             if site_var == 'Draftkings':
                 if type_var == 'Classic':
                     if sport_var == 'CS2':