Refine pagination button functionality and session state management in app.py

- Updated pagination button logic to ensure accurate page navigation, including adjustments to the current page display.
- Enhanced session state management by ensuring the 'current_page' is correctly set and relevant session data is cleared upon navigation, improving user experience.

app.py

@@ -183,7 +183,6 @@ with tab2:
             working_df['dupes'] = working_df.groupby('sorted').transform('size')
             working_df = working_df.drop('sorted', axis=1)
         
-        
         # Initialize pagination in session state if not exists
         if 'current_page' not in st.session_state:
             st.session_state.current_page = 0
@@ -196,19 +195,18 @@ with tab2:
         # Create pagination controls in a single row
         pagination_cols = st.columns([4, 1, 1, 1, 4])
         with pagination_cols[1]:
-            if st.button(f"Page {st.session_state.current_page}", disabled=st.session_state.current_page == 0):
+            if st.button(f"Page {st.session_state.current_page - 1}"):
                 if st.session_state['current_page'] > 0:
                     st.session_state.current_page -= 1
+                else:
+                    st.session_state.current_page = 0
                     if 'player_frame' in st.session_state:
                         del st.session_state['player_frame']
                         del st.session_state['stack_frame']
 
         with pagination_cols[3]:
-            if st.button(f"Page {st.session_state.current_page + 2}", disabled=st.session_state.current_page == total_pages - 1):
-                if 'current_page' not in st.session_state:
-                    st.session_state.current_page = 1
-                else:
-                    st.session_state.current_page += 1
+            if st.button(f"Page {st.session_state.current_page + 1}"):
+                st.session_state.current_page += 1
                 if 'player_frame' in st.session_state:
                     del st.session_state['player_frame']
                     del st.session_state['stack_frame']