chore: 添加虚拟环境到仓库

- 添加 backend_service/venv 虚拟环境
- 包含所有Python依赖包
- 注意：虚拟环境约393MB，包含12655个文件

backend_service/venv/lib/python3.13/site-packages/agentscope/_config.py

@@ -0,0 +1,23 @@
+# -*- coding: utf-8 -*-
+"""The runtime configuration in agentscope.
+
+.. note:: You should import this module as ``import ._config``, then use the
+ variables defined in this module, instead of ``from ._config import xxx``.
+ Because when the variables are changed, the changes will not be reflected in
+ the imported module.
+"""
+from datetime import datetime
+
+import shortuuid
+
+
+def _generate_random_suffix(length: int) -> str:
+    """Generate a random suffix."""
+    return shortuuid.uuid()[:length]
+
+
+project = "UnnamedProject_At" + datetime.now().strftime("%Y%m%d")
+name = datetime.now().strftime("%H%M%S_") + _generate_random_suffix(4)
+run_id: str = shortuuid.uuid()
+created_at: str = datetime.now().strftime("%Y-%m-%d %H:%M:%S.%f")[:-3]
+trace_enabled: bool = False