Update app.py

app.py

@@ -1,22 +1,52 @@
 import sys
+import types
 
-# --- CRITICAL PATCH: FIX SCHEMA PARSER TYPEERROR ON PYTHON 3.13 ---
+# =================================================================
+# CRITICAL PYTHON 3.13 / GRADIO SDK CONFLICT MONKEY-PATCHES
+# Must execute before ANY other library import to intercept Gradio
+# =================================================================
+
+# 1. Force-inject HfFolder into sys.modules to satisfy older Gradio imports
+try:
+    # Create a dynamic mock class for HfFolder matching its historical signatures
+    class MockHfFolder:
+        @classmethod
+        def get_token(cls): return None
+        @classmethod
+        def save_token(cls, token): pass
+        @classmethod
+        def delete_token(cls): pass
+
+    # If huggingface_hub isn't fully loaded yet, build a stub module layout for it
+    if 'huggingface_hub' not in sys.modules:
+        hf_hub_mock = types.ModuleType('huggingface_hub')
+        hf_hub_mock.HfFolder = MockHfFolder
+        hf_hub_mock.whoami = lambda *args, **kwargs: {"name": "anonymous", "auth": {"type": "none"}}
+        sys.modules['huggingface_hub'] = hf_hub_mock
+    else:
+        # If it is loaded, inject the missing class descriptor directly into the object surface
+        import huggingface_hub
+        if not hasattr(huggingface_hub, 'HfFolder'):
+            huggingface_hub.HfFolder = MockHfFolder
+            sys.modules['huggingface_hub'].HfFolder = MockHfFolder
+except Exception as patch_err_1:
+    print(f"Pre-import HfFolder patch skipped or failed: {patch_err_1}")
+
+# 2. Patch the Gradio client schema serialization parser to avoid the 'bool' type loop error
 try:
     import gradio_client.utils as client_utils
-    orig_get_type = client_utils.get_type
+    orig_get_type = getattr(client_utils, 'get_type', None)
     
-    def safe_get_type(schema):
-        # If the schema parser encounters a raw boolean instead of a dictionary,
-        # return a default fallback string to avoid the 'bool is not iterable' crash.
-        if isinstance(schema, bool):
-            return "boolean"
-        return orig_get_type(schema)
-        
-    client_utils.get_type = safe_get_type
-    print("Successfully patched gradio_client schema serialization engine.")
-except Exception as patch_err:
-    print(f"Failed to apply serialization patch: {patch_err}")
-# -----------------------------------------------------------------
+    if orig_get_type:
+        def safe_get_type(schema):
+            if isinstance(schema, bool):
+                return "boolean"
+            return orig_get_type(schema)
+        client_utils.get_type = safe_get_type
+        print("Successfully patched gradio_client schema serialization engine.")
+except Exception as patch_err_2:
+    print(f"Schema serialization engine patch deferred: {patch_err_2}")
+# =================================================================
 
 import os
 import cv2