Fix: Password authentication and deprecated package

Issues fixed:
1. Password supports APP_PASSWORD env var (default: demo123)
2. Removed deprecated extra-streamlit-components package

Fixes space crash on startup.

app.py

@@ -1,3 +1,4 @@
+import os
 import streamlit as st
 import pandas as pd
 import matplotlib.pyplot as plt
@@ -22,7 +23,7 @@ st.set_page_config(
 # Password protection
 def check_password():
     def password_entered():
-        if st.session_state["password"] == st.secrets["app_password"]:
+        if st.session_state["password"] == st.secrets.get("app_password", os.environ.get("APP_PASSWORD", "demo123")):
             st.session_state["password_correct"] = True
             del st.session_state["password"]
         else:

requirements.txt

@@ -1,7 +1,6 @@
 streamlit
 pandas
 matplotlib
-extra-streamlit-components
 streamlit-toggle
 streamlit-tags
 streamlit-vertical-slider