Update app.py

Switch to google/pegasus-xsum for better summarization

app.py

@@ -10,13 +10,12 @@ if not HF_TOKEN:
 print(f"HF_TOKEN loaded: {len(HF_TOKEN) if HF_TOKEN else 0} characters")
 
 try:
-    client = InferenceClient(model="facebook/mbart-large-50", token=HF_TOKEN)
+    client = InferenceClient(model="google/pegasus-xsum", token=HF_TOKEN)
     def generate_summary(text):
         for _ in range(3):
             try:
-                response = client.summarization(text)
+                response = client.summarization(text, max_length=50, min_length=10, num_beams=4)
                 print(f"API Response: {response}")
-                # 优先使用 generated_text，如果为空则尝试 summary_text
                 if hasattr(response, 'generated_text') and response.generated_text:
                     return response.generated_text
                 elif hasattr(response, 'summary_text') and response.summary_text: