Update app.py

app.py

@@ -1,5 +1,28 @@
 # run_encrypted.py
 
+# --- BEGIN: runtime guard to guarantee websockets>=12 and avoid local shadowing ---
+import sys, subprocess, importlib, os
+
+# 1) Block local shadowing (e.g., a 'websockets.py' file/folder in your repo)
+repo_shadow = any(os.path.exists(p) for p in ["websockets.py", "websockets", "./websockets.py", "./websockets"])
+if repo_shadow:
+    raise SystemExit("Rename local 'websockets' module/folder; it shadows the real package.")
+
+# 2) Ensure the correct package version is present *before* Gradio imports gradio_client
+try:
+    import websockets  # type: ignore
+    # If the modern submodule isn't available, force-install the right version.
+    try:
+        import websockets.asyncio  # noqa: F401
+    except Exception:
+        raise ImportError
+except Exception:
+    subprocess.check_call([sys.executable, "-m", "pip", "install", "--no-cache-dir", "websockets==12.0"])
+    importlib.invalidate_caches()
+    import websockets  # type: ignore
+    import websockets.asyncio  # should now exist
+# --- END: runtime guard ---
+ 
 import os
 import base64
 from cryptography.fernet import Fernet