Tweaked the num threads env var setting code to handle weird edge cases.

app.py

@@ -1,7 +1,12 @@
 import os, sys, subprocess
 
-# Fix the OpenMP warning (Spaces sometimes sets this to a non-integer)
-os.environ["OMP_NUM_THREADS"] = str(int(os.environ.get("OMP_NUM_THREADS", "1") or "1"))
+# ---- Fix OpenMP env issue on HF ----
+val = os.environ.get("OMP_NUM_THREADS", "1")
+try:
+    val = str(int(val))
+except Exception:
+    val = "1"
+os.environ["OMP_NUM_THREADS"] = val
 
 def ensure_styletts2():
     try: