Fix: Remove set_global_dates call from config_page.py

- Dates are now handled via optimization_config.get_date_span()
- Extract functions take start_date as parameter directly
- No global date setting needed

config_page.py

@@ -1063,10 +1063,10 @@ def clear_all_cache_and_results():
         calculated_end_date = st.session_state.start_date + timedelta(days=4)
         planning_days = 5
     
-    sys.path.append('src')
-    import src.preprocess.extract as extract
-    extract.set_global_dates(st.session_state.start_date, calculated_end_date)
-    st.write(f"📅 Updated global dates: {st.session_state.start_date} to {calculated_end_date} ({planning_days} days)")
+    # Note: Dates are handled directly in optimization_config.py via get_date_span()
+    # No need to set global dates - extract functions take start_date as parameter
+    st.write(f"📅 Date configuration: {st.session_state.start_date} to {calculated_end_date} ({planning_days} days)")
+    st.info("💡 Dates will be applied when optimization runs (via optimization_config.get_date_span())")
     
     st.success("✅ All caches and previous results cleared!")