Update app.py

app.py

@@ -1,3 +1,18 @@
+import sys, subprocess, importlib
+
+def ensure_torch():
+    try:
+        import torch
+        return
+    except Exception:
+        subprocess.check_call([sys.executable, "-m", "pip", "install", "--no-cache-dir",
+                               "torch==2.2.0+cpu", "--extra-index-url", "https://download.pytorch.org/whl/cpu"])
+        importlib.invalidate_caches()
+
+ensure_torch()
+# now safe to import torch and proceed
+import torch
+
 # app.py - Gradio UI using vendored tinyllava
 import io, requests, traceback
 from PIL import Image