feat(frontend): 添加数据集选择功能到训练页面

- 在 train_page.py 中添加数据集选择下拉框
- 从全局变量中获取数据集列表并设置初始值
- 添加交互性和自定义值支持

frontend/train_page.py

@@ -1,9 +1,29 @@
 import gradio as gr
+import sys
+from pathlib import Path
+sys.path.append(str(Path(__file__).resolve().parent.parent))
+from global_var import get_model, get_tokenizer, get_datasets
 
 def train_page():
     with gr.Blocks() as demo:
+
         gr.Markdown("## 微调")
-        with gr.Row():
-            with gr.Column():
-                pass
+        # 获取数据集列表并设置初始值
+        datasets_list = [str(ds["name"]) for ds in get_datasets().all()]
+        initial_dataset = datasets_list[0] if datasets_list else None
+        dataset_dropdown = gr.Dropdown(
+            choices=datasets_list,
+            value=initial_dataset,  # 设置初始选中项
+            label="选择数据集",
+            allow_custom_value=True,
+            interactive=True
+        )
+
     return demo
+
+if __name__ == "__main__":
+    from global_var import init_global_var
+    init_global_var("workdir")
+    demo = train_page()
+    demo.queue()
+    demo.launch()