Make Classify button full-width on its own row

- Move Classify button to its own row with large size
- Keep See the Code and Reset buttons together on second row

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app.py

@@ -786,8 +786,8 @@ https://github.com/chrissoria/cat-llm
 
             api_key_status = gr.Markdown("**Free tier** - no API key required! We cover the cost while CatLLM is in review.")
 
+            classify_btn = gr.Button("Classify", variant="primary", size="lg")
             with gr.Row():
-                classify_btn = gr.Button("Classify", variant="primary")
                 see_code_btn = gr.Button("See the Code", variant="secondary")
                 reset_btn = gr.Button("Reset", variant="stop")