refactor(frontend): 调整数据集生成页面布局并优化代码结构

- 使用 gr.Column(scale=1) 和 gr.Column(scale=2) 调整列宽比例
- 移除多余的空行和缩进，提高代码可读性
- 优化变量声明和组件创建的顺序，使页面结构更清晰

frontend/dataset_generate_page.py

@@ -12,7 +12,7 @@ def dataset_generate_page():
     with gr.Blocks() as demo:
         gr.Markdown("## 数据集生成")
         with gr.Row():
-            with gr.Column():
+            with gr.Column(scale=1):
                 docs_list = [str(doc.name) for doc in get_docs()]
                 initial_doc = docs_list[0] if docs_list else None
                 doc_dropdown = gr.Dropdown(
@@ -22,8 +22,6 @@ def dataset_generate_page():
                     interactive=True
                 )
                 doc_choice = gr.State(value=initial_doc)
-
-            with gr.Column():
                 prompts = get_prompt_store().all()
                 prompt_list = [f"{p['id']} {p['name']}" for p in prompts]
                 initial_prompt = prompt_list[0] if prompt_list else None
@@ -45,8 +43,6 @@ def dataset_generate_page():
                     interactive=True
                 )
                 prompt_choice = gr.State(value=initial_prompt)
-
-            with gr.Column():
                 # 从数据库获取API Provider列表
                 with Session(get_sql_engine()) as session:
                     providers = session.exec(select(APIProvider)).all()
@@ -61,17 +57,17 @@ def dataset_generate_page():
                 )
                 api_choice = gr.State(value=initial_api)
 
-        generate_button = gr.Button("生成数据集",variant="primary")
+                output_text = gr.Textbox(label="生成结果", interactive=False)
+                generate_button = gr.Button("生成数据集",variant="primary")
 
-        output_text = gr.Textbox(label="生成结果", interactive=False)
-
-        variables_dataframe = gr.Dataframe(
-            headers=["变量名", "变量值"],
-            datatype=["str", "str"],
-            interactive=True,
-            label="变量列表",
-            value=initial_dataframe_value  # 设置初始化数据
-        )
+            with gr.Column(scale=2):
+                variables_dataframe = gr.Dataframe(
+                    headers=["变量名", "变量值"],
+                    datatype=["str", "str"],
+                    interactive=True,
+                    label="变量列表",
+                    value=initial_dataframe_value  # 设置初始化数据
+                )
 
 
         def on_doc_change(selected_doc):
@@ -92,7 +88,6 @@ def dataset_generate_page():
             dataframe_value = [] if input_variables is None else input_variables
             return selected_prompt, dataframe_value
 
-
         def on_generate_click(doc_state, prompt_state, api_state, variables_dataframe, progress=gr.Progress()):
             variables_dict = {}
             # 正确遍历DataFrame的行数据
@@ -116,7 +111,6 @@ def dataset_generate_page():
 
             return "all done"
 
-        
         doc_dropdown.change(on_doc_change, inputs=doc_dropdown, outputs=doc_choice)
         prompt_dropdown.change(on_prompt_change, inputs=prompt_dropdown, outputs=[prompt_choice, variables_dataframe])
         api_dropdown.change(on_api_change, inputs=api_dropdown, outputs=api_choice)