Update app.py

Make reasoning on by default...

app.py

@@ -75,7 +75,7 @@ def chat_fn(history, enable_thinking, temperature, top_p, top_k, repetition_pena
 with gr.Blocks(title="SmolLM3-3B Chat") as demo:
     gr.Markdown("## 🤖 SmolLM3-3B Chatbot (Streaming)")
     with gr.Row():
-        enable_think = gr.Checkbox(label="Enable Extended Thinking (/think)", value=False)
+        enable_think = gr.Checkbox(label="Enable Extended Thinking (/think)", value=True)
         temperature = gr.Slider(0.0, 1.0, value=0.6, label="Temperature")
         top_p = gr.Slider(0.0, 1.0, value=0.95, label="Top-p")
         top_k = gr.Slider(1,40,value=20,label="Top_k")