add default key

app.py

@@ -294,7 +294,7 @@ with gr.Blocks(
                         label="Nebius API Key",
                         type="password",
                         placeholder="Enter your Nebius API key",
-                        value=""
+                        value=DEFAULT_NEBIUS_API_KEY
                     )
                 
                 # 图片上传
@@ -339,14 +339,14 @@ with gr.Blocks(
             with gr.Column():
                 gr.Markdown("#### 📸 Image Analysis Tool")
                 img_tool = gr.Image(type="pil", label="Image")
-                nebius_key_tool = gr.Textbox(label="Nebius API Key", type="password")
+                nebius_key_tool = gr.Textbox(label="Nebius API Key", type="password", value=DEFAULT_NEBIUS_API_KEY)
                 analyze_btn = gr.Button("Analyze Image")
                 analysis_result = gr.Textbox(label="Analysis Result", lines=5)
             
             with gr.Column():
                 gr.Markdown("#### 💻 Code Generation Tool")
                 desc_input = gr.Textbox(label="Description", lines=3)
-                nebius_key_tool2 = gr.Textbox(label="Nebius API Key", type="password")
+                nebius_key_tool2 = gr.Textbox(label="Nebius API Key", type="password", value=DEFAULT_NEBIUS_API_KEY)
                 code_btn = gr.Button("Generate Code")
                 code_result = gr.Code(label="Generated Code", language="html")