Update portfolio reset functionality in app.py to restore working frame from base frame. This change ensures that the portfolio resets correctly by copying the base frame, enhancing the user experience during portfolio management.

app.py

@@ -810,7 +810,7 @@ with tab2:
             col1, col2 = st.columns(2)
             with col1:
                 if st.button('Reset Portfolio', key='reset_port'):
-                    del st.session_state['working_frame']
+                    st.session_state['working_frame'] = st.session_state['base_frame'].copy()
 
             with col2:
                 with st.form(key='contest_size_form'):
@@ -942,7 +942,8 @@ with tab2:
                             sum(st.session_state['map_dict']['own_map'].get(player, 0) for player in row.iloc[1:]),
                     axis=1
                 )
-            st.session_state['working_frame'] = predict_dupes(st.session_state['working_frame'], st.session_state['map_dict'], site_var, type_var, Contest_Size, strength_var, sport_var)
+            st.session_state['base_frame'] = predict_dupes(st.session_state['working_frame'], st.session_state['map_dict'], site_var, type_var, Contest_Size, strength_var, sport_var)
+            st.session_state['working_frame'] = st.session_state['base_frame'].copy()
             # st.session_state['highest_owned_teams'] = st.session_state['projections_df'][~st.session_state['projections_df']['position'].isin(['P', 'SP'])].groupby('team')['ownership'].sum().sort_values(ascending=False).head(3).index.tolist()
             # st.session_state['highest_owned_pitchers'] = st.session_state['projections_df'][st.session_state['projections_df']['position'].isin(['P', 'SP'])]['player_names'].sort_values(by='ownership', ascending=False).head(3).tolist()
             if 'info_columns_dict' not in st.session_state: