Refactor session state management in Streamlit app to retain specific keys during initialization. This change ensures that only essential session data is preserved, enhancing the app's performance and user experience.

src/streamlit_app.py

@@ -6,8 +6,11 @@ import re
 
 print(f"Streamlit version: {st.__version__}")
 
+maintained_keys = ['tab_selector', 'site_var', 'view_var']
+
 for key in list(st.session_state.keys()):
-    del st.session_state[key]
+    if key not in maintained_keys:
+        del st.session_state[key]
 
 st.set_page_config(layout="wide")