mkdir(mode=0o700) yields an owner-only ACL on Windows with Python 3.13+, leaving _bmad unreadable after the rename. Use the default mode instead. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Sk72AxLwQnYttF6VFSxQLt