Bug: No module named 'fcntl' on Windows

Bug: `No module named 'fcntl'` on Windows

Environment

OS: Windows
Shell: PowerShell
CodeWiki version: latest (installed via pip install git+https://github.com/FSoft-AI4Code/CodeWiki.git)
Python version: (add yours with python --version)

Steps to reproduce

Install CodeWiki on Windows
Configure with codewiki config set --provider claude-code --main-model claude-sonnet-4-6 --cluster-model claude-sonnet-4-6
Navigate to a local repository
Run codewiki generate

Expected behavior
Documentation is generated successfully.

Actual behavior
The process fails at step [1/5] Dependency Analysis with the following error:

依赖包 caw 的 storage.py 顶层 import fcntl,只用于 JsonlWriter.append 里的文件锁(第 29 行 fcntl.flock)。fcntl 是 POSIX 专有,Windows 上根本没有,所以模块一加载就崩。
让AI修复一下就好了

依赖包 caw 的 storage.py 顶层 import fcntl,只用于 JsonlWriter.append 里的文件锁(第 29 行 fcntl.flock)。fcntl 是 POSIX 专有,Windows 上根本没有,所以模块一加载就崩。让AI修复一下就好了

That's not the only issue you'll face when trying to use caw (Original repo: https://github.com/zzjas/caw, the version CodeWiki uses: https://github.com/anhnh2002/caw/tree/fix/codex-exec-robustness) on Windows. The repository as a whole makes many assumptions that it will only ever run on POSIX, unfortunately. :/