refactor: update requirements and set environment variables for model caching

requirements.txt

@@ -1,7 +1,9 @@
 --extra-index-url https://download.pytorch.org/whl/cpu
 
-# Core app and UI library
+# Pin the main UI components to recent, stable versions
 streamlit==1.35.0
+# streamlit-camera removed as st.camera_input is native
+streamlit-autorefresh==1.0.1
 
 # Library for video/audio file handling
 moviepy

src/streamlit_app.py

@@ -1,5 +1,10 @@
 import os
 import streamlit as st
+
+# Set home directories for model caching to the writable /tmp folder
+os.environ['DEEPFACE_HOME'] = '/tmp/.deepface'
+os.environ['HF_HOME'] = '/tmp/huggingface'
+
 import numpy as np
 import torch
 import whisper