Fix Streamlit permission issue on Hugging Face Spaces

.streamlit/config.toml

@@ -1,2 +1,6 @@
+[general]
+# Disable metrics that cause writing to '/'
+disableWatchdogWarning = true
+
 [browser]
 gatherUsageStats = false

streamlit_app.py

@@ -1,6 +1,8 @@
 import streamlit as st
 from agentic_handler import run_agenticseek
 from utils import generate_pdf
+import os
+os.environ["STREAMLIT_HOME"] = os.getcwd()
 
 st.title("📝 TNPSC தமிழில் உதவியாளர்")