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/numpy/_configtool.py

@@ -0,0 +1,39 @@
+import argparse
+import sys
+from pathlib import Path
+
+from .lib._utils_impl import get_include
+from .version import __version__
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "--version",
+        action="version",
+        version=__version__,
+        help="Print the version and exit.",
+    )
+    parser.add_argument(
+        "--cflags",
+        action="store_true",
+        help="Compile flag needed when using the NumPy headers.",
+    )
+    parser.add_argument(
+        "--pkgconfigdir",
+        action="store_true",
+        help=("Print the pkgconfig directory in which `numpy.pc` is stored "
+              "(useful for setting $PKG_CONFIG_PATH)."),
+    )
+    args = parser.parse_args()
+    if not sys.argv[1:]:
+        parser.print_help()
+    if args.cflags:
+        print("-I" + get_include())
+    if args.pkgconfigdir:
+        _path = Path(get_include()) / '..' / 'lib' / 'pkgconfig'
+        print(_path.resolve())
+
+
+if __name__ == "__main__":
+    main()