Fixed env variables

src/streamlit_app.py

@@ -15,9 +15,13 @@ for Hugging Face Spaces deployment.
 from __future__ import annotations
 import os, pathlib
 # Writable locations --------------------------------------------------
-os.environ.setdefault("HOME", "/tmp")                    # fixes expanduser("~")
-os.environ.setdefault("STREAMLIT_HOME", "/tmp/.st_home") # Streamlit telemetry
-os.environ.setdefault("HF_HOME",       "/tmp/hf_cache")  # Hub model cache
+os.environ["HOME"] = "/tmp"  # force, not setdefault
+os.environ["XDG_CONFIG_HOME"] = "/tmp"
+os.environ["STREAMLIT_CONFIG_DIR"] = "/tmp/.streamlit"
+os.environ["STREAMLIT_CACHE_DIR"] = "/tmp/.st-cache"
+os.environ["STREAMLIT_BROWSER_GATHERUSAGESTATS"] = "false"
+for d in ("/tmp/.streamlit", "/tmp/.st-cache"):
+    pathlib.Path(d).mkdir(parents=True, exist_ok=True)
 # --------------------------------------------------------------------
 
 # create the dirs once