Use explicit Spaces GPU decorators

app.py

@@ -11,14 +11,16 @@ import pandas as pd
 try:
     import spaces
 except Exception:
-    spaces = None
+    class _SpacesFallback:
+        @staticmethod
+        def GPU(func=None, *args, **kwargs):
+            if func is None:
+                def decorator(inner_func):
+                    return inner_func
+                return decorator
+            return func
 
-
-def _gpu_decorator(func):
-    """Use Spaces GPU decorator when available; no-op locally."""
-    if spaces is None:
-        return func
-    return spaces.GPU(func)
+    spaces = _SpacesFallback()
 
 # ===================== UTILITIES =====================
 
@@ -83,7 +85,7 @@ def get_embeddings_examples():
 
 # ===================== SENTIMENT ANALYSIS =====================
 
-@_gpu_decorator
+@spaces.GPU
 def demo_sentiment(text):
     """Demo sentiment analysis."""
     if not text.strip():
@@ -95,7 +97,7 @@ def demo_sentiment(text):
 
 # ===================== NER =====================
 
-@_gpu_decorator
+@spaces.GPU
 def demo_ner(text):
     """Demo named entity recognition."""
     if not text.strip():
@@ -109,7 +111,7 @@ def demo_ner(text):
 
 # ===================== QUESTION ANSWERING =====================
 
-@_gpu_decorator
+@spaces.GPU
 def demo_qa(context, question):
     """Demo question answering."""
     if not context.strip() or not question.strip():
@@ -123,7 +125,7 @@ def demo_qa(context, question):
 
 # ===================== SUMMARIZATION =====================
 
-@_gpu_decorator
+@spaces.GPU
 def demo_summarization(text):
     """Demo text summarization."""
     if not text.strip():
@@ -140,7 +142,7 @@ def demo_summarization(text):
 
 # ===================== SEMANTIC SIMILARITY =====================
 
-@_gpu_decorator
+@spaces.GPU
 def demo_similarity(text1, text2):
     """Demo semantic similarity."""
     if not text1.strip() or not text2.strip():
@@ -154,7 +156,7 @@ def demo_similarity(text1, text2):
 
 # ===================== TOKENIZATION =====================
 
-@_gpu_decorator
+@spaces.GPU
 def demo_tokenization(text):
     """Demo tokenization."""
     if not text.strip():