update app and example

app.py

@@ -293,7 +293,7 @@ with gr.Blocks(css=css) as demo:
         * **Refocusing:** 1. **Click** on the subject you want to bring into focus in the **Step 2** image preview.  
           2. Increase **K** (Blur Strength) to generate realistic bokeh effects based on the scene's depth.
         
-        > ⚠️ **Preprocessing Note:** Due to resource constraints in this demo, input images are **automatically resized** (longest edge = 512px).  
+        > ⚠️ **Preprocessing Note:** Due to resource constraints in this demo, input images are **automatically resized** (longer edge = 512px).  
         > If you wish to perform inference at the **original resolution**, please refer to our **[GitHub Code](https://github.com/nycu-cplab/Genfocus)** to run it locally.
         """)
         
@@ -303,6 +303,7 @@ with gr.Blocks(css=css) as demo:
             # [Step 1: Upload]
             with gr.Column(scale=1):
                 gr.Markdown("### Step 1: Upload Image")
+                gr.Markdown("Click an example or upload your own image.")
                 
                 input_raw = gr.Image(label="Raw Input Image", type="pil")
                 
@@ -318,7 +319,7 @@ with gr.Blocks(css=css) as demo:
                 
                 with gr.Row():
                     click_status = gr.Textbox(label="Selected Coordinates", value="Center (Default)", interactive=False, scale=1)
-                    k_slider = gr.Slider(minimum=0, maximum=50, value=0, step=1, label="Blur Strength (K)", scale=2)
+                    k_slider = gr.Slider(minimum=0, maximum=50, value=20, step=1, label="Blur Strength (K)", scale=2)
                 
                 run_btn = gr.Button("✨ Run Genfocus", variant="primary", scale=1)