add instructoins

app.py

@@ -618,6 +618,34 @@ def main():
 
     # Sidebar for filters
     with st.sidebar:
+        # Instructions section (collapsible)
+        with st.expander("📖 How to Use", expanded=False):
+            st.markdown("""
+            #### 🎯 Using Filters
+            
+            1. **Select filters** from the sidebar to narrow your search:
+            
+            2. **Leave filters empty** to search across all data
+            
+            3. **Type your question** in the chat input at the bottom
+            
+            4. **Click "Send"** to submit your question
+            
+            #### 💡 Tips
+            
+            - Use specific questions for better results
+            - Combine multiple filters for precise searches
+            - Check the "Retrieved Documents" tab to see source material
+            
+            #### ⚠️ Important
+            
+            **When finished, please close the browser window** to free up computational resources.
+            
+            ---
+            
+            For more detailed help, see the example questions at the bottom of the page.
+            """)
+        
         st.markdown("### 🔍 Search Filters")
         st.markdown("Select filters to narrow down your search. Leave empty to search all data.")