Refactor session state management by removing unnecessary copy operations for origin and working portfolios.

app.py

@@ -567,7 +567,7 @@ if selected_tab == 'Data Load':
                         'cpt_proj_map':dict(zip(st.session_state['projections_df']['player_names'], st.session_state['projections_df']['median'] * 1.5)),
                         'cpt_own_map':dict(zip(st.session_state['projections_df']['player_names'], st.session_state['projections_df']['captain ownership']))
                     }
-            st.session_state['origin_portfolio'] = st.session_state['portfolio'].copy()
+            st.session_state['origin_portfolio'] = st.session_state['portfolio']
             buffer = io.BytesIO()
             st.session_state['portfolio'].to_parquet(buffer, compression='snappy')
             st.session_state['origin_portfolio'] = buffer.getvalue()
@@ -1092,7 +1092,7 @@ if selected_tab == 'Manage Portfolio':
             with reset_port_col:
                 if st.button('Reset Portfolio', key='reset_port'):
                     st.session_state['settings_base'] = True
-                    st.session_state['working_frame'] = st.session_state['base_frame'].copy()
+                    st.session_state['working_frame'] = st.session_state['base_frame']
             with recalc_div_col:
                 if st.button("Recalculate Diversity"):
                         st.session_state['display_frame']['Diversity'] = recalc_diversity(st.session_state['display_frame'], st.session_state['player_columns'])