Update main.py

main.py

@@ -27,7 +27,7 @@ from app.intro import display_intro_page
 from app.building_information import display_building_info_page
 from app.climate_data import display_climate_page
 from app.materials_library import display_materials_page, Material, GlazingMaterial, MaterialCategory
-from app.construction import display_construction_page
+from app.construction import display_construction_page, get_available_constructions
 from app.components import display_components_page
 from app.internal_loads import display_internal_loads_page
 from app.hvac_loads import display_hvac_loads_page
@@ -309,6 +309,19 @@ class BuildSustain:
                 if key in st.session_state:
                     st.session_state.pop(key, None)
         
+        # Clear construction-specific states when leaving the Construction page
+        if previous_page == "Construction":
+            keys_to_clear = [
+                "construction_action",
+                "construction_rerun_pending",
+                "construction_form_state",
+                "construction_editor",
+                "rerun_trigger"
+            ]
+            for key in keys_to_clear:
+                if key in st.session_state:
+                    st.session_state.pop(key, None)
+        
         # Clear any module-specific rerun flags when changing pages
         st.session_state.module_rerun_flags = {}