chore: allow set temperature to zero

app.py

@@ -305,11 +305,16 @@ def generate(
         streamer=streamer,
         max_new_tokens=max_new_tokens,
         do_sample=True,
-        top_p=top_p,
-        top_k=top_k,
         temperature=temperature,
         repetition_penalty=repetition_penalty,
     )
+    if temperature == 0:
+        generate_kwargs["do_sample"] = False
+    else:
+        generate_kwargs["temperature"] = temperature
+        generate_kwargs["top_p"] = top_p
+        generate_kwargs["top_k"] = top_k
+
     t = Thread(target=model.generate, kwargs=generate_kwargs)
     t.start()
 
@@ -336,7 +341,7 @@ chat_interface = gr.ChatInterface(
         ),
         gr.Slider(
             label="Temperature",
-            minimum=0.1,
+            minimum=0.0,
             maximum=2.0,
             step=0.1,
             value=0.4,