feat(code): Update default model and examples

- Set the default model for code generation to "Faster".
- Add "Write a hello world alert" as the first example for both HTML and Gradio code generation, while keeping existing examples.

tab_code.py

@@ -261,15 +261,17 @@ def create_code_tab():
     fullscreen_state = gr.State(False)
 
     html_examples = [
+        "Write a hello world alert",
         "Create a Canvas animation of continuous colorful fireworks blooming on a black background.",
         "Generate a Canvas special effect with iridescent light streams.",
         "Design a particle system Canvas animation that interacts with the mouse.",
         "Implement a classic snake game using HTML Canvas.",
-        "Create a Canvas animation simulating the 'Elephant\'s Toothpaste' chemical experiment: in a container, colored foam continuously and rapidly gushes out, expands, and overflows, filling the entire screen. Use a suitable drawing js library, such as three.js.",
+        "Create a Canvas animation simulating the 'Elephant\\\'s Toothpaste' chemical experiment: in a container, colored foam continuously and rapidly gushes out, expands, and overflows, filling the entire screen. Use a suitable drawing js library, such as three.js.",
         "Create a dreamy low-poly floating island scene with dynamic lighting and soft animations in a single HTML file. Use a suitable drawing js library, such as three.js.",
     ]
 
     gradio_examples = [
+        "Write a hello world alert",
         "Create a simple calculator that supports addition, subtraction, multiplication, and division",
         "Create a simple Gradio application that displays 'Hello, Gradio!'",
         "Create an image classification application that can classify uploaded images",
@@ -292,7 +294,7 @@ def create_code_tab():
                 gr.Markdown("### 2. Select Model")
                 model_choice_radio = gr.Radio(
                     ["Better (using Ling-1T)", "Faster (using Ring-flash-2.0)"],
-                    value="Better (using Ling-1T)",
+                    value="Faster (using Ring-flash-2.0)",
                     label="Model Selection"
                 )