[Add] default heatmap

app.py

@@ -138,8 +138,8 @@ with gr.Blocks(title="LLM Similarity Analyzer") as demo:
     )
     
     generate_btn = gr.Button("Generate Heatmap", variant="primary")
-    heatmap = gr.Image(label="Similarity Heatmap", visible=True)
-    
+    heatmap = gr.Image(value=create_heatmap(model_init), label="Similarity Heatmap", visible=True)
+
     generate_btn.click(
         fn=validate_inputs,
         inputs=[model_dropdown, dataset_dropdown],