SearchGPT: Address the Gradio-related issue.

* Duplicate type="messages" parameter used to define history in the OpenAI style.

https://www.gradio.app/docs/gradio/chatinterface#param-chatinterface-type

- If one of them is missing or not set, the same logs will appear twice.

- This is happening again now, even though previously setting just one of them worked fine.

```
/usr/local/lib/python3.13/site-packages/gradio/chat_interface.py:328: UserWarning: The gr.ChatInterface was not provided with a type, so the type of the gr.Chatbot, 'messages', will be used.
```

* Add more examples.

app.py

@@ -17,11 +17,15 @@ with gr.Blocks(fill_height=True, fill_width=True) as app:
             show_copy_button=True,
             scale=1
         ),
+        type="messages",  # 2025-09-10: Shut up!
         examples=[
             ["What is UltimaX Intelligence"],
             ["https://wikipedia.org/wiki/Artificial_intelligence Read and summarize that"],
             ["What's the latest AI development in 2025?"],
-            ["OpenAI GPT-5 vs DeepSeek V3.1"]
+            ["OpenAI GPT-5 vs DeepSeek V3.1"],
+            ["Find the source link for the GPT-OSS model"],
+            ["https://huggingface.co/papers Extract the most popular papers"],
+            ["How to run Gemma 3 (270M) on CPU only"]
         ],
         cache_examples=False,
         show_api=False,