xrootd now needs to be installed separately

从 Getting Started.ipynb 开始，尤其是第 10 个单元格，并在 Codespaces 中复现远程 ROOT 文件访问。检查项目如何配置其 Codespaces 或分析环境，并确保包含 XRootD Python 绑定。完成的标准是笔记本单元格能够打开远程文件且不会出现 ModuleNotFoundError。

Environment: (where does this bug occur, have you tried other environments)

• Which branch (often main for latest released): main
• Environment: Codespaces

Steps to reproduce: (give a step by step account of how to trigger the bug)

• Open project in codespaces (it opens fine)
• Try running notebooks cells that open remote root file
• This produces an error:

---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
File /opt/conda/envs/analysis/lib/python3.12/site-packages/uproot/extras.py:98, in XRootD_client()
     97 try:
---> 98     import XRootD
     99     import XRootD.client

ModuleNotFoundError: No module named 'XRootD'

The above exception was the direct cause of the following exception:

ModuleNotFoundError                       Traceback (most recent call last)
/workspaces/python-analysis-bootcamp/Getting Started.ipynb Cell 10 line 1
----> [1](vscode-notebook-cell://codespaces%2Bjubilant-palm-tree-5rjr5g9rv7344x6/workspaces/python-analysis-bootcamp/Getting%20Started.ipynb#X12sdnNjb2RlLXJlbW90ZQ%3D%3D?line=0) events = ur.open(server + dir + file + ':events')

File /opt/conda/envs/analysis/lib/python3.12/site-packages/uproot/reading.py:143, in open(path, object_cache, array_cache, custom_classes, decompression_executor, interpretation_executor, **options)
    134 if not uproot._util.isstr(file_path) and not (
    135     hasattr(file_path, "read") and hasattr(file_path, "seek")
    136 ):
    137     raise ValueError(
    138         "'path' must be a string, pathlib.Path, an object with 'read' and "
    139         "'seek' methods, or a length-1 dict of {file_path: object_path}, "
    140         f"not {path!r}"
    141     )
--> 143 file = ReadOnlyFile(
...
ModuleNotFoundError: Install XRootD python bindings with:

    conda install -c conda-forge xrootd