feat(trading-assistant): refactor strategy creation and enhance script mode functionality

- Removed conditional rendering for the assistant guide bar.
- Simplified strategy overview and strategy list item components.
- Introduced a new modal for selecting strategy mode.
- Enhanced strategy creation modal to support script strategies with a dedicated editor.
- Updated form handling for script strategies, including validation and submission logic.
- Improved user experience with better messaging and streamlined UI components.
- Updated translations for better clarity in Chinese.

backend_api_python/app/data_sources/factory.py

@@ -62,7 +62,7 @@ class DataSourceFactory:
             from app.data_sources.futures import FuturesDataSource
             return FuturesDataSource()
         else:
-            raise ValueError(f"不支持的市场类型: {market}")
+            raise ValueError(f"Unsupported market type: {market}")
     
     @classmethod
     def get_kline(